09G2S (09Г2С) Low-Alloy Structural Steel
Russian Metals supplies 09G2S steel, also written as 09Г2С steel, for welded structures, pressure equipment, pipelines, storage tanks, bridges, industrial frameworks and low-temperature engineering applications.
09G2S is a Russian manganese-silicon, low-alloy structural steel known for its combination of strength, weldability, impact toughness and cold resistance. The grade is widely used where ordinary carbon steel may not provide sufficient mechanical performance at reduced operating temperatures.
We supply 09G2S material in various product forms, including:
- 09G2S steel plate and sheet
- Hot-rolled plate and wide steel strip
- Seamless and welded pipe
- Round bar, flat bar and forged bar
- Structural sections
- Flanges and pipeline fittings
- Cut-to-size and custom-fabricated components
Material can be supplied with chemical and mechanical test reports, dimensional inspection, impact testing, ultrasonic testing and Material Test Certificates according to the purchase specification.
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Quick Specification Overview of 09G2S Steel
| Property | General information |
|---|---|
| Steel grade | 09G2S / 09Г2С |
| Common alternative spelling | 09G2C |
| Steel type | Low-alloy structural steel |
| Alloy system | Manganese-silicon steel |
| Common product standard | GOST 19281 |
| Pressure-equipment reference | GOST 5520 |
| Structural-strength comparison | C345 under applicable GOST requirements |
| Typical carbon content | Maximum 0.12% |
| Typical manganese content | 1.30–1.70% |
| Typical silicon content | 0.50–0.80% |
| General weldability | Weldable without inherent limitations, subject to thickness and fabrication conditions |
| General condition | Hot rolled, normalized or supplied according to the applicable product standard |
| Main advantages | Strength, weldability, toughness and low-temperature performance |
| Common applications | Structures, pressure vessels, tanks, bridges, boilers, pipelines and industrial equipment |
The final specification must be selected according to product form, thickness, heat-treatment condition, operating temperature and applicable design code.
Alternative Spellings and Transliteration
The original Russian designation is 09Г2С. International buyers may encounter several spellings:
- 09Г2С
- 09G2S
- 09G2C
- 09 G2 S
- Steel 09G2S
- Russian grade 09G2S
- Сталь 09Г2С
- Марка стали 09Г2С
The Latin designation 09G2S is the commonly used transliteration. The spelling 09G2C appears because the final Cyrillic character “С” resembles the Latin letter “C,” although it represents the silicon designation normally transliterated as “S.”
These spellings generally refer to the same Russian steel grade, but procurement documents should state both 09G2S and 09Г2С to prevent confusion.
09G2S Grade Designation Breakdown
The designation provides a general indication of the steel’s composition:
| Symbol | Meaning |
|---|---|
| 09 | Approximately 0.09% nominal carbon |
| G / Г | Manganese alloying element |
| 2 | Indicates the approximate manganese-alloying level |
| S / С | Silicon alloying element |
The actual accepted composition is controlled by the applicable material standard and the certified mill test results, rather than only by the grade-name breakdown.
Low-Alloy Structural-Steel Classification
09G2S is classified as a low-alloy structural steel. Its manganese and silicon content increases strength while retaining good fabrication and welding characteristics.
The grade is commonly selected for:
- Load-bearing welded structures
- Cold-climate construction
- Pressure-containing equipment
- Large storage vessels
- Oil and gas pipelines
- Industrial machinery
- Heavy engineering components
- Structures requiring improved impact toughness
Compared with ordinary carbon structural grades, 09G2S can provide improved strength and toughness without requiring a heavily alloyed composition.
09G2S Chemical Composition
Chemical Composition in Percentage for 09G2S / 09Г2С
| Element | Symbol | Content, % |
|---|---|---|
| Carbon | C | Maximum 0.12 |
| Silicon | Si | 0.50–0.80 |
| Manganese | Mn | 1.30–1.70 |
| Nickel | Ni | Maximum 0.30 |
| Sulphur | S | Maximum 0.035 |
| Phosphorus | P | Maximum 0.030 |
| Chromium | Cr | Maximum 0.30 |
| Vanadium | V | Maximum 0.12 |
| Nitrogen | N | Maximum 0.008 |
| Copper | Cu | Maximum 0.30 |
| Arsenic | As | Maximum 0.08 |
The relatively low carbon content supports the weldability of 09G2S steel. Manganese contributes to strength and hardenability, while silicon acts as a deoxidizer and supports the required mechanical properties.
The actual composition shown on the Material Test Certificate may vary within the permitted limits of the ordered standard.
Temperature of Critical Points
The critical transformation temperatures supplied for 09G2S steel are:
| Critical point | Temperature |
|---|---|
| Ac1 | 725°C |
| Ac3 / Acm | 860°C |
| Ar3 / Arcm | 780°C |
| Ar1 | 625°C |
These values are useful when developing normalizing, heating, forming and welding procedures. Production heat-treatment temperatures must be selected according to the product thickness, furnace conditions, required microstructure and applicable standard.
Mechanical Properties of 09G2S Steel
Mechanical properties depend on:
- Product form
- Material thickness
- Delivery condition
- Heat treatment
- Product standard
- Test-piece orientation
- Test temperature
Mechanical Properties at 20°C
| Product | Dimension | Tensile strength | Yield strength | Elongation | Impact toughness | Heat treatment |
|---|---|---|---|---|---|---|
| Sheet under GOST 5520-79 | According to order | 430–490 MPa | 265–345 MPa | 21% | 590–640 kJ/m² | According to product specification |
| Pipe under GOST 10705-80 | According to order | Approximately 490 MPa | Approximately 343 MPa | 20% | Standard-dependent | According to product specification |
| Bars | Up to 250 mm | Minimum approximately 430 MPa | Minimum approximately 265 MPa | 21% | Standard-dependent | According to product specification |
These figures are useful for preliminary material evaluation but should not be treated as universal guaranteed values for every 09G2S product. The purchase order must identify the required standard, thickness range, strength class, delivery condition and testing requirements.
Mechanical Properties by Product Thickness
09G2S yield strength and tensile strength can change as the material thickness increases. Therefore, a plate, bar or structural section should not be approved only by comparing the grade name.
A correct technical enquiry should include:
| Required information | Example procurement requirement |
|---|---|
| Product form | Plate, sheet, bar, pipe or section |
| Nominal thickness | State exact thickness or thickness range |
| Required yield strength | Specify minimum value |
| Required tensile strength | Specify accepted range |
| Required elongation | Specify minimum percentage |
| Impact-test temperature | State project temperature |
| Impact-test acceptance | State minimum absorbed energy or applicable category |
| Delivery condition | Hot rolled, normalized or another agreed condition |
| Testing direction | Longitudinal or transverse |
| Governing standard | GOST or project-approved specification |
Russian Metals can arrange material selection according to the requested thickness and mechanical-property class.
Yield and Tensile-Strength Classes
Depending on product form and governing standard, 09G2S is commonly associated with structural-strength levels used for medium- and high-strength welded structures.
The material is frequently compared with:
- GOST C345 structural steel
- EN S355 structural grades
- Chinese Q345 grades
- ASTM A572 Grade 50
- Pressure-vessel grades under ASTM A516
These comparisons are based on overlapping applications or strength levels. They do not mean that the grades are automatically interchangeable.
A substitution must verify:
- Chemical composition
- Yield strength at the ordered thickness
- Tensile-strength range
- Elongation
- Impact toughness
- Test temperature
- Heat-treatment condition
- Welding requirements
- Product dimensions
- Design-code acceptance
Physical Properties of 09G2S Steel
General Physical Properties
| Physical property | Typical engineering value or condition |
|---|---|
| Density | Approximately 7,850 kg/m³ |
| Magnetic behaviour | Ferromagnetic |
| Corrosion resistance | Similar to uncoated low-alloy structural steel |
| Surface protection | Painting, coating, galvanizing or another project-specific system may be required |
| Thermal expansion | Increases with operating temperature |
| Thermal conductivity | Temperature-dependent |
| Electrical resistivity | Temperature-dependent |
| Specific heat | Temperature-dependent |
Coefficient of Thermal Expansion
| Temperature | Approximate thermal-expansion coefficient |
|---|---|
| 100°C | 11.4 × 10⁻⁶/°C |
| 200°C | 12.2 × 10⁻⁶/°C |
| 300°C | 12.6 × 10⁻⁶/°C |
| 400°C | 13.2 × 10⁻⁶/°C |
| 500°C | 13.8 × 10⁻⁶/°C |
These values are suitable for preliminary engineering calculations. Project-critical thermal calculations should use values accepted by the responsible engineer and design code.
Impact Toughness and Low-Temperature Performance
One of the major reasons for selecting 09G2S is its suitability for structures operating in cold environments.
The grade is commonly used for:
- Cold-climate structural frames
- Outdoor industrial equipment
- Storage tanks
- Pipelines
- Bridges
- Mining equipment
- Oil and gas installations
- Equipment used in northern regions
- Welded structures exposed to reduced temperatures
Impact toughness depends on steelmaking quality, section thickness, delivery condition, specimen orientation and test temperature.
Charpy Impact-Test Temperature and Category
A universal Charpy test temperature should not be assumed from the grade name alone. The purchaser should specify:
- Required Charpy test temperature
- Specimen orientation
- Specimen size
- Required absorbed energy
- Number of specimens
- Acceptance criteria
- Applicable product standard
- Whether testing is required for the base metal, weld or heat-affected zone
Russian Metals can supply 09G2S impact-tested material with the required test results when impact testing is included in the purchase specification.
Technological Properties
| Property | 09G2S condition |
|---|---|
| Weldability | Without inherent limitations, subject to fabrication conditions |
| Flake sensitivity | Not predisposed |
| Temper brittleness | Not predisposed |
| Cold forming | Generally suitable within the permitted bend radius |
| Machinability | Comparable to other weldable low-alloy structural steels |
| Heat treatment | Standard- and product-dependent |
| Corrosion resistance | Requires suitable protection in corrosive environments |
“Weldability without limitations” does not eliminate the need for a qualified welding procedure. Thick sections, high restraint, low ambient temperature and high hydrogen levels may still require additional controls.
Equivalent and Comparable Steel Grades
Historical and Nearest 09G2S Equivalents
| Country | Standard system | Exact or nearest comparison |
|---|---|---|
| Germany | DIN / WNr | 13Mn6, 9MnSi5 |
| Japan | JIS | SB49 |
| China | GB | 12Mn |
| Bulgaria | BDS | 09G2S |
| Hungary | MSZ | VH2 |
| Romania | STAS | 9SiMn16 |
| Europe | EN | Frequently compared with S355 and S355J2 |
| China | GB/T | Frequently compared with Q345 or Q345D |
| United States | ASTM | Frequently compared with A572 Grade 50 for structural use |
| United States | ASTM | Compared with selected A516 grades for pressure-equipment applications |
Important: The table contains exact, historical and nearest comparisons. It must not be used as an automatic substitution table.
Equivalent-grade approval requires a complete comparison of the relevant standard, chemistry, thickness-based properties, impact requirements and delivery condition.
09G2S vs S355J2
09G2S and S355J2 are frequently compared because both are used for welded structural applications requiring strength and impact performance.
| Comparison point | 09G2S / 09Г2С | S355J2 |
|---|---|---|
| Standard system | GOST | EN |
| General material type | Low-alloy manganese-silicon structural steel | European structural steel |
| Common use | Structures, tanks, pipelines and cold-climate equipment | Buildings, bridges, machinery and structural fabrication |
| Strength class | Depends on product, thickness and standard | S355 thickness-based strength class |
| Impact requirement | Must be stated under the applicable GOST or project specification | Controlled by the J2 designation and applicable EN requirements |
| Delivery condition | Hot rolled, normalized or standard-dependent | Depends on the complete grade designation |
| Direct replacement | No | No |
09G2S may be considered for applications where an S355-type strength level is required, but 09G2S vs S355J2 approval must be based on certified properties, not only general grade similarity.
09G2S vs Q345D
Q345D is a Chinese low-alloy structural-steel designation often compared with 09G2S.
| Comparison point | 09G2S | Q345D |
|---|---|---|
| Standard family | Russian GOST | Chinese GB/T |
| General application | Welded structures, tanks, pipes and cold-weather equipment | Structural fabrication and engineering applications |
| Alloy concept | Manganese-silicon low-alloy steel | Low-alloy structural-steel system |
| Strength | Product- and thickness-dependent | Product- and thickness-dependent |
| Impact testing | Must be ordered according to applicable requirements | Controlled by the complete Q345D specification |
| Interchangeability | Requires technical approval | Requires technical approval |
A 09G2S and Q345D comparison must review the actual MTC, impact-test temperature and material condition.
09G2S vs ASTM A572 Grade 50
ASTM A572 Grade 50 is a high-strength, low-alloy structural grade used in buildings, bridges and industrial structures. It is sometimes considered when searching for a 09G2S ASTM equivalent.
| Comparison point | 09G2S | ASTM A572 Grade 50 |
|---|---|---|
| Standard system | GOST | ASTM |
| Main use | Welded structures, pressure equipment, tanks and pipelines | Structural shapes, plate and bars |
| Strength basis | GOST product and thickness requirements | ASTM grade and thickness requirements |
| Impact testing | Project- or standard-dependent | Not identical to 09G2S requirements |
| Chemistry | Manganese-silicon system | ASTM-controlled chemistry |
| Direct equivalent | No | No |
A572 Grade 50 may provide a broadly comparable structural-strength level in selected dimensions, but it should not be specified as an exact 09G2S equivalent steel without engineering review.
09G2S vs ASTM A516
ASTM A516 is a pressure-vessel plate specification, while 09G2S may be supplied under GOST requirements for pressure-containing equipment.
| Comparison point | 09G2S under pressure-equipment requirements | ASTM A516 |
|---|---|---|
| Standard system | GOST 5520 or project specification | ASTM pressure-vessel plate specification |
| Application | Boilers, pressure vessels and welded equipment | Welded pressure vessels |
| Grade system | Russian grade designation | Separate strength grades |
| Impact testing | Must be defined by standard and order | Supplementary or code-dependent requirements may apply |
| Heat treatment | Standard- and thickness-dependent | Grade, thickness and order-dependent |
| Direct replacement | Not automatic | Not automatic |
09G2S should not be described as an exact equivalent of ASTM A516 Grade 60 or another A516 grade. The correct comparison requires pressure-design-code approval, thickness-based mechanical properties, heat treatment and impact testing.
GOST 19281 Requirements
GOST 19281 is commonly associated with high-strength rolled steel products used in welded structures.
When ordering 09G2S GOST 19281 steel, the enquiry should identify:
- Product form
- Dimensions
- Strength class
- Delivery condition
- Chemical composition requirements
- Mechanical-property category
- Impact-test temperature
- Surface condition
- Flatness and dimensional tolerances
- Inspection and certificate requirements
The exact standard edition and any project-specific amendments should be stated on the purchase order.
GOST 5520 Pressure-Equipment Requirements
09G2S plate may be ordered for boilers, pressure vessels and other pressure-containing equipment under applicable GOST 5520 requirements.
Recommended Pressure-Equipment Order Details
| Requirement | Information to specify |
|---|---|
| Equipment type | Boiler, vessel, tank or heat exchanger |
| Design temperature | Minimum and maximum operating temperature |
| Design pressure | Project value |
| Plate thickness | Exact nominal thickness |
| Delivery condition | As required by standard or design code |
| Impact testing | Temperature and acceptance criteria |
| Ultrasonic testing | Required class or acceptance standard |
| Heat treatment | As ordered |
| Certificate | MTC or agreed EN 10204 documentation |
| Traceability | Heat number and plate identification |
Material acceptance remains subject to the pressure-equipment design code and responsible engineering authority.
GOST 27772 and C345 Structural Comparison
09G2S is frequently associated with the C345 structural-steel strength class under applicable Russian structural-steel requirements.
However, 09G2S and C345 describe different aspects:
- 09G2S identifies a chemical-composition-based steel grade.
- C345 identifies a structural-strength class under the relevant standard.
A particular 09G2S product may meet a C345 requirement when its thickness, mechanical properties, delivery condition and test category satisfy the governing specification.
The terms should not be treated as universally identical without verifying the product certificate.
Welding Characteristics of 09G2S
09G2S is widely selected for welded construction because of its low carbon content and practical weldability.
Commonly used welding processes include:
- Manual metal arc welding
- MIG welding
- MAG welding
- TIG welding
- Submerged arc welding
- Mechanized pipeline welding
- Automated fabrication welding
Welding Methods and Consumables
Welding consumables should be selected to provide:
- Compatible tensile strength
- Adequate yield strength
- Required low-temperature impact toughness
- Low diffusible hydrogen
- Suitable weld-metal chemistry
- Compatibility with the selected welding process
- Compliance with the fabrication code
The welding electrode or wire must not be selected only from the 09G2S grade name. A qualified Welding Procedure Specification should control the consumable classification, heat input, interpass temperature and inspection requirements.
Preheating Requirements
09G2S welding can often be completed without preheating under favourable fabrication conditions. However, preheating may be necessary when one or more of the following conditions apply:
- Thick plate or heavy section
- High joint restraint
- Low ambient temperature
- Wet or contaminated surfaces
- High-hydrogen welding consumables
- Rapid heat loss
- Repair welding
- Critical pressure-containing joints
- Demanding heat-affected-zone toughness requirements
The required preheat temperature should be calculated or qualified using:
- Material carbon equivalent
- Combined joint thickness
- Hydrogen level
- Heat input
- Ambient temperature
- Joint restraint
- Applicable welding code
A universal 09G2S preheat temperature should not be applied to every product.
Post-Weld Heat Treatment
Post-weld heat treatment is not automatically required for all 09G2S welded structures.
PWHT may be specified for:
- Pressure vessels
- Boilers
- Thick-walled pipeline components
- Highly restrained welds
- Equipment requiring residual-stress reduction
- Fabrications controlled by a pressure-design code
- Components requiring hardness control
The heating rate, soaking temperature, soaking duration and cooling rate must follow the approved fabrication procedure.
Heat-Affected-Zone Considerations
The heat-affected zone can determine the final performance of a welded 09G2S component.
Important controls include:
- Heat input
- Cooling rate
- Interpass temperature
- Hydrogen content
- Joint restraint
- Base-metal thickness
- Weld sequence
- Ambient temperature
- Consumable storage
- Post-weld inspection
Excessive heat input may reduce toughness or produce an undesirable coarse-grained region. Very low heat input may increase cooling speed and hardness. The welding procedure should balance productivity with base-metal and HAZ performance.
Normalizing and Heat Treatment
09G2S may be supplied hot rolled or normalized according to the product standard and required mechanical properties.
The listed Ac3 temperature is approximately 860°C. A normalizing procedure is therefore developed above the transformation range, with the final temperature and soaking time selected according to section thickness and required microstructure.
The heat-treatment procedure should define:
- Furnace temperature
- Heating rate
- Soaking temperature
- Soaking duration
- Loading arrangement
- Cooling method
- Final mechanical testing
- Identification and traceability
Uncontrolled reheating can alter strength, toughness and dimensional stability.
Machining and Forming
09G2S can be machined using conventional equipment suitable for low-alloy structural steel.
Common operations include:
- Cutting
- Drilling
- Turning
- Milling
- Boring
- Grinding
- Sawing
- Plasma cutting
- Laser cutting
- Oxy-fuel cutting
- Edge preparation
Machining parameters should account for:
- Product hardness
- Delivery condition
- Tool material
- Cutting speed
- Feed rate
- Coolant
- Required surface finish
Thermal-cut edges intended for fatigue-sensitive or pressure-containing applications may require grinding and inspection.
Cold Bending and Forming
09G2S plate and sheet can be used for cold-formed and bent components when the forming procedure respects the permitted bend radius and material direction.
The fabricator should consider:
- Plate thickness
- Rolling direction
- Edge condition
- Surface defects
- Bend radius
- Forming temperature
- Equipment capacity
- Springback
- Required impact toughness
- Need for post-forming inspection
Sharp bends and damaged cut edges can increase the risk of cracking. Critical components should be qualified through a bend test or approved forming procedure.
Available 09G2S Product Forms
Russian Metals supplies or sources 09G2S in product forms suitable for structural, pipeline and pressure-equipment projects.
| Product form | Available supply options |
|---|---|
| Steel plate | Hot rolled, normalized, cut-to-size or project-specific dimensions |
| Steel sheet | Standard or custom sheet dimensions |
| Wide strip | Mill-width or cut-width supply |
| Steel coil | Subject to required thickness, width and mill availability |
| Seamless pipe | Outside diameter and wall thickness according to the order |
| Welded pipe | Longitudinal or project-approved welded construction |
| Round bar | Rolled or forged, subject to diameter requirements |
| Flat bar | Standard or cut dimensions |
| Forgings | Drawing-based components |
| Structural sections | Angles, channels, beams and fabricated sections |
| Flanges | Drawing- or standard-based flanges |
| Pipe fittings | Elbows, tees, reducers and fabricated fittings |
| Valve components | Project-specific forged or machined components |
Availability must be confirmed for the exact standard, size, quantity, testing and delivery condition.
Available Thicknesses and Dimensions
Because 09G2S is supplied across several product categories, there is no single universal dimensional range.
Plate and Sheet Ordering Table
| Specification field | Required information |
|---|---|
| Product | Plate, sheet, coil or strip |
| Thickness | Exact millimetre value |
| Width | Standard or custom width |
| Length | Standard, random or fixed length |
| Delivery condition | Hot rolled or normalized |
| Edge condition | Mill edge, trimmed or machined |
| Surface condition | As rolled, blasted, primed or project-specific |
| Cutting | Plasma, oxy-fuel, laser or saw-cut |
| Testing | Tensile, Charpy, UT or additional testing |
| Certificate | MTC or agreed inspection certificate |
Russian Metals can arrange 09G2S cut-to-size steel plate according to drawings, nesting plans or finished component dimensions.
09G2S Plate and Sheet Availability
09G2S plate and sheet are used for:
- Welded structural frames
- Pressure vessels
- Boilers
- Storage tanks
- Bridge components
- Industrial platforms
- Large containers
- Mining equipment
- Agricultural machinery
- Oil and gas equipment
- Chemical-processing equipment
Supply options may include:
- 09G2S structural steel plate
- 09G2S low-alloy steel plate
- 09G2S hot-rolled plate
- 09G2S hot-rolled sheet
- 09G2S wide steel strip
- 09G2S normalized plate
- Impact-tested 09G2S plate
- Ultrasonically tested 09G2S plate
- Plate with MTC
- Custom-cut plate
09G2S Pipe and Tube Availability
09G2S steel pipe is used where welded construction, strength and low-temperature service are important.
Pipe and Tube Supply Specification
| Requirement | Available order description |
|---|---|
| Pipe type | Seamless or welded |
| Application | Structural, pressure, boiler, gas or oil pipeline |
| Outside diameter | According to project requirement |
| Wall thickness | According to pressure and design requirement |
| Length | Random, double-random or fixed |
| Ends | Plain, bevelled, threaded or project-specific |
| Heat treatment | According to applicable standard |
| Testing | Hydrostatic, ultrasonic or other agreed inspection |
| Documentation | Chemical and mechanical test report |
| Surface protection | Bare, coated, painted or project-specific |
Common enquiries include:
- 09G2S seamless pipe
- 09G2S welded pipe
- 09G2S structural pipe
- 09G2S low-temperature pipe
- 09G2S pressure pipe
- 09G2S boiler tube
- 09G2S gas pipeline pipe
- 09G2S oil pipeline pipe
Structural Section Availability
09G2S can be supplied or processed for structural-section applications, subject to mill production and project approval.
Available or fabricated forms may include:
- 09G2S angle steel
- 09G2S channel
- 09G2S I-beam
- 09G2S flat bar
- 09G2S cold-formed section
- 09G2S structural profile
- Fabricated welded beam
- Custom structural component
For fabricated sections, the enquiry should include drawings, member dimensions, weld requirements, tolerances, inspection and surface-protection requirements.
Round Bar, Forged Bar and Rod Availability
Bar-Product Supply Specification
| Product | Supply information |
|---|---|
| Round bar | Diameter and fixed or random length |
| Forged bar | Diameter, reduction ratio and heat treatment |
| Steel rod | Diameter, straightness and surface condition |
| Flat bar | Width, thickness and length |
| Machined bar | Finished diameter and tolerance |
| Cut pieces | Drawing or required unit length |
| Testing | Mechanical tests, UT or hardness when ordered |
| Traceability | Heat-number identification |
09G2S round bar can be used for structural parts, shafts, supports, machined components and heavy engineering applications where the design permits the grade.
Flanges and Fitting Availability
09G2S can be considered for pipeline flanges, fittings and associated components when permitted by the applicable piping code.
Product options may include:
- 09G2S flanges
- Welded fittings
- Elbows
- Tees
- Reducers
- Pressure-vessel fittings
- Pipeline valve components
- Custom machined fittings
- Drawing-based components
Fitting and Flange Order Details
| Requirement | Information required |
|---|---|
| Component type | Flange, elbow, tee, reducer or custom part |
| Dimensions | Standard reference or drawing |
| Pressure class | Project-defined |
| Connection | Weld neck, slip-on, butt weld or other type |
| Heat treatment | As required |
| Impact testing | Project temperature and criteria |
| NDT | UT, MPI, DPI or radiography as applicable |
| Certificate | Material and inspection documentation |
| Marking | Grade, heat number and size |
Fabricated or forged components must be approved for the service conditions and piping design code.
Pressure-Vessel and Boiler Applications
09G2S is used for pressure-containing equipment where the ordered material satisfies the applicable pressure-equipment requirements.
Typical applications include:
- Pressure vessels
- Boilers
- Separators
- Receivers
- Heat-exchanger components
- Large welded containers
- Process vessels
- Storage equipment
- Pressure-equipment supports
Critical procurement requirements include impact testing, ultrasonic examination, heat treatment, weld procedure qualification and traceability.
Pipeline Applications
09G2S is used in pipeline systems because of its strength, weldability and low-temperature performance.
Applications may include:
- Oil pipelines
- Gas pipelines
- Industrial pipelines
- Pressure piping
- Pipeline fittings
- Flanges
- Valve components
- Low-temperature pipeline systems
- Pipeline support structures
The material specification should match the pipeline design pressure, operating temperature, wall thickness, corrosion allowance and applicable construction code.
Building and Bridge Applications
09G2S structural steel can be used for:
- Building frames
- Bridge structures
- Industrial buildings
- Platforms
- Towers
- Heavy supports
- Crane structures
- Structural columns
- Welded beams
- Outdoor cold-climate construction
For bridge and fatigue-sensitive applications, the purchase specification should address toughness, weld quality, surface defects, lamellar tearing risk and inspection requirements.
Oil and Gas Applications
Common 09G2S oil and gas applications include:
- Pipeline components
- Storage tanks
- Process vessels
- Separators
- Structural skids
- Equipment supports
- Flanges and fittings
- Low-temperature facilities
- Field-processing equipment
- Petrochemical plant structures
Material selection must account for operating temperature, corrosive media, sour-service requirements and pressure-design regulations. Standard 09G2S should not be assumed to satisfy special sour-service conditions unless specifically tested and certified.
Chemical and Petrochemical Applications
09G2S may be used for structural and pressure-related components in chemical and petrochemical facilities.
The grade itself is not a corrosion-resistant stainless steel. Where the component is exposed to corrosive chemicals, protection may require:
- Coating
- Painting
- Corrosion allowance
- Internal lining
- Cladding
- Cathodic protection
- Controlled operating conditions
The process medium and corrosion mechanism must be reviewed before material approval.
Low-Temperature Applications
09G2S is commonly considered for low-temperature and cold-climate applications because of its toughness and structural performance.
Potential applications include:
- Northern-region construction
- Outdoor storage tanks
- Cold-weather pipelines
- Bridges
- Mining machinery
- Structural supports
- Oil and gas equipment
- Shipbuilding components
- Industrial containers
The required minimum design temperature must be supported by the ordered impact-test category and certified Charpy test results.
Testing and Inspection
Russian Metals can arrange testing and inspection according to the agreed purchase specification.
Available inspection requirements may include:
| Test or inspection | Purpose |
|---|---|
| Chemical analysis | Confirms alloy composition |
| Tensile test | Confirms tensile and yield strength |
| Elongation test | Evaluates ductility |
| Charpy impact test | Evaluates toughness at the specified temperature |
| Hardness testing | Confirms hardness range |
| Ultrasonic testing | Detects internal discontinuities |
| Dimensional inspection | Confirms size and tolerances |
| Visual inspection | Checks surface condition |
| Positive material identification | Verifies material identity when applicable |
| Hydrostatic testing | Used for applicable pipes and pressure products |
| Weld inspection | Confirms fabricated-joint quality |
Third-party inspection can be coordinated when requested before production or dispatch.
Charpy Impact-Test Certificate
A Charpy-tested 09G2S order should state:
- Test temperature
- Test specimen orientation
- Full-size or sub-size specimen
- Minimum absorbed-energy requirement
- Number of test specimens
- Testing frequency
- Heat or plate testing basis
- Applicable test method
- Required certificate wording
The certificate should identify the material heat number and connect the test results to the supplied plate, pipe, bar or component.
Ultrasonic Testing
Ultrasonic testing may be required for:
- Thick plate
- Pressure-vessel plate
- Critical welded structures
- Forged bars
- Flange material
- Heavy sections
- Components exposed to through-thickness stress
The order should state the UT method, acceptance level, scanning coverage and reporting requirements. “UT tested” without an identified acceptance standard is not a complete inspection requirement.
Material Test Certificate
A 09G2S Material Test Certificate may include:
- Manufacturer information
- Purchase-order reference
- Steel grade
- Product standard
- Heat number
- Product dimensions
- Chemical composition
- Yield strength
- Tensile strength
- Elongation
- Impact-test results
- Heat-treatment condition
- Additional test results
- Inspection authorization
- Product traceability
The required certificate type must be agreed before order placement.
EN 10204 3.1 Documentation
Where required by the buyer, material documentation may be supplied in a format aligned with EN 10204 3.1, subject to mill capability and order confirmation.
The requirement should be included in the original enquiry. It should not be assumed that every available 09G2S stock item automatically carries EN 10204 3.1 documentation.
For critical orders, confirm:
- Certificate type
- Heat-number traceability
- Testing scope
- Inspection representative
- Original or verified certificate format
- Third-party inspection requirements
Packaging and Export Details
09G2S steel products can be prepared for domestic or export delivery according to product type.
Packaging options may include:
- Steel-strapped plate bundles
- Wooden supports
- Moisture-resistant wrapping
- Bar and pipe bundling
- End protection
- Flange-face protection
- Export marking
- Heat-number identification
- Packing-list identification
- Container loading
- Breakbulk shipment preparation
Documentation can include the commercial invoice, packing list, MTC, test reports, inspection reports and agreed country-of-origin documents.
09G2S Supplier and Stock Availability
Russian Metals supplies 09G2S material for customers requiring Russian and GOST steel grades in India and international markets.
Supply services include:
- 09G2S steel supplier in India
- 09G2S steel supplier in Mumbai
- 09G2S plate stockist
- 09G2S pipe supplier
- 09G2S round bar supplier
- 09G2S flange supplier
- 09G2S low-alloy steel supplier
- 09G2S cold-resistant steel supplier
- 09G2S GOST steel supplier
- 09G2S custom-size material
- 09G2S material with MTC
- 09G2S impact-tested material
- 09G2S Charpy-tested steel
- Cut-to-size steel plate
- Drawing-based fabricated components
Stock and production availability depends on dimensions, quantity, testing, delivery condition and required certification.
For accurate material selection, provide the complete product specification rather than only requesting a 09G2S price per kg.
Information Required for a 09G2S Enquiry
| Enquiry field | Details to provide |
|---|---|
| Grade | 09G2S / 09Г2С |
| Product | Plate, pipe, bar, section, flange or fitting |
| Standard | GOST or project specification |
| Dimensions | Thickness, width, length, diameter or wall thickness |
| Quantity | Pieces, metres or total weight |
| Delivery condition | Hot rolled, normalized or other |
| Mechanical properties | Required yield, tensile and elongation |
| Impact testing | Temperature and acceptance criteria |
| NDT | UT or other required testing |
| Certificate | MTC, EN 10204 3.1 or other agreed document |
| Processing | Cutting, machining or fabrication |
| Delivery destination | City, port and country |
| Delivery schedule | Required dispatch or project date |
This information allows Russian Metals to identify technically suitable material and avoid incorrect equivalent-grade selection.
Frequently Asked Questions
What is 09G2S steel?▾
09G2S is a Russian low-alloy manganese-silicon structural steel used for welded structures, tanks, pipelines, pressure equipment and low-temperature applications.
Are 09G2S and 09Г2С the same grade?▾
Yes. 09Г2С is the original Cyrillic designation, while 09G2S is its commonly used Latin transliteration.
What does 09G2C mean?▾
09G2C is an alternative spelling created by visually interpreting the final Cyrillic letter “С” as the Latin letter “C.” In most material searches, 09G2C refers to 09G2S or 09Г2С.
Is 09G2S a carbon steel or alloy steel?▾
09G2S is generally classified as a low-alloy structural steel. It contains controlled manganese and silicon additions beyond an ordinary plain-carbon structural-steel composition.
Is 09G2S suitable for welding?▾
Yes. 09G2S has good weldability and is widely used for welded construction. A qualified welding procedure is still required, especially for thick, restrained or low-temperature joints.
Can 09G2S be welded without preheating?▾
It can often be welded without preheating under favourable conditions. Heavy thickness, cold weather, high restraint or hydrogen-sensitive fabrication may require controlled preheating.
What is the density of 09G2S steel?▾
A commonly used engineering value is approximately 7,850 kg/m³.
What is the 09G2S equivalent in EN standards?▾
09G2S is frequently compared with S355 and S355J2 structural grades. They are not automatic equivalents because chemistry, impact requirements, delivery condition and thickness-based properties differ.
Is 09G2S equivalent to S355J2?▾
Not exactly. The grades may overlap in structural strength and application, but a substitution requires a complete comparison of the relevant certificates and standards.
Is Q345D an equivalent of 09G2S?▾
Q345D is a commonly referenced Chinese comparison grade. It should be treated as a nearest or application-based comparison rather than a guaranteed direct equivalent.
Is ASTM A572 Grade 50 equivalent to 09G2S?▾
ASTM A572 Grade 50 can provide a broadly comparable structural-strength level in selected products. It is not an exact 09G2S ASTM equivalent.
Is ASTM A516 equivalent to 09G2S?▾
No universal equivalence applies. ASTM A516 covers pressure-vessel plate grades, while 09G2S may be supplied under GOST pressure-equipment requirements. The specific grade, thickness and testing must be compared.
Is 09G2S suitable for low-temperature use?▾
09G2S is commonly used in cold-resistant structures. Suitability for a specific minimum design temperature must be verified through the ordered impact-test category and Charpy results.
Can 09G2S be used for pressure vessels?▾
It may be used for pressure vessels when supplied under an appropriate pressure-equipment specification and accepted by the governing design code.
Is 09G2S corrosion resistant?▾
09G2S is not a stainless or inherently corrosion-resistant grade. Painting, coating, lining or another corrosion-protection system may be required.
What products are available in 09G2S steel?▾
Potential product forms include plate, sheet, coil, pipe, tube, round bar, forged bar, flat bar, structural sections, flanges and fittings, subject to the required standard and availability.
Can Russian Metals supply 09G2S with an MTC?▾
Yes, 09G2S material can be supplied with chemical and mechanical test documentation when the certificate requirement is agreed during ordering.
Can 09G2S be supplied with a Charpy impact-test certificate?▾
Yes. The test temperature, specimen orientation, acceptance value and certificate requirement must be specified before supply.
Can Russian Metals provide custom-cut 09G2S plate?▾
Russian Metals can arrange cut-to-size plate, custom dimensions and drawing-based processing according to the confirmed order requirements.
09G2S Structural Steel with Testing, MTC and Export Support
Send the product form, dimensions, quantity, GOST or project specification, delivery condition, impact testing, certification and destination for a technically correct quotation.
09G2S Russian low-alloy structural steel sourcing.
Chemical, mechanical, Charpy and inspection documentation.
Cut-to-size plate, pipe, bar, flanges and fittings.
Export packaging and worldwide delivery assistance.