ST3, Steel 35 and Steel 45 Supplier and Exporter
Russian Metals supplies Russian ST3 steel, Steel 35, Steel 45 and legacy DIN 2391 St35 and St45 precision tubes for structural fabrication, engineering, machinery, automotive, hydraulic and industrial applications.
Our supply range can include ST3 steel plate, sheet, round bar, rod, structural sections, Steel 35 round bar, Steel 45 round bar, forged bars, hot-rolled bars and DIN 2391 precision steel tubes in specified delivery conditions.
Buyers can submit requirements by grade, standard, dimensions, quantity, delivery condition, testing requirement and destination. Russian Metals will confirm material availability, applicable specifications, minimum order quantity, inspection documentation and delivery schedule against the enquiry.
ST3, Steel 35, Steel 45, St35 and St45 Grade Comparison
These grade names look similar but do not describe the same material.
| Search designation | Material category | Principal standard | Common product forms | Typical procurement use |
|---|---|---|---|---|
| ST3, St3, Ст3 | Ordinary-quality structural carbon steel | GOST 380-2005 | Plate, sheet, bar, rod and structural sections | Welded structures, frames and general fabrication |
| Steel 35, Сталь 35 | Quality structural carbon steel | GOST 1050 | Round bar, forged bar, flat bar and engineering components | Shafts, levers, axles, pins and machinery parts |
| Steel 45, Сталь 45 | Medium-carbon quality structural steel | GOST 1050 | Round bar, forged bar, plate and machined components | Gears, shafts, spindles, pins and wear-loaded parts |
| St35, 1.0308 | Precision-tube steel designation | Legacy DIN 2391 | Seamless precision steel tube and honed tube | Hydraulic, pneumatic and mechanical tube systems |
| St45, 1.0408 | Higher-strength precision-tube designation | Legacy DIN 2391 | Seamless cold-drawn and precision tube | Mechanical, hydraulic and engineering tube systems |
| St35.8 | Elevated-temperature tube grade | Legacy DIN 17175 | Seamless boiler and pressure tube | Boiler, heat exchanger and elevated-temperature service |
Equivalent-grade references must not be treated as automatic substitutions. The final material must be selected according to chemical composition, mechanical properties, dimensions, delivery condition, impact requirements, heat treatment and the governing project specification.
GOST 380-2005 ST3 Steel
ST3 steel is an ordinary-quality carbon structural steel used for welded and non-welded structures, general fabrication, machinery frames and industrial components.
Russian Metals can support enquiries for Russian ST3 steel in plate, sheet, round bar, rod and hot-rolled forms. Common grade variants include ST3sp steel, ST3ps steel and ST3kp steel.
ST3 Steel Grade Variants
The letters following the ST3 designation indicate the degree of deoxidation.
| Grade | Russian designation | Deoxidation condition | General description |
|---|---|---|---|
| ST3kp | Ст3кп | Rimmed steel | Lower silicon content and economical general-purpose material |
| ST3ps | Ст3пс | Semi-killed steel | Intermediate deoxidation and balanced processing characteristics |
| ST3sp | Ст3сп | Killed steel | More uniform structure and commonly requested for structural applications |
The required ST3 variant must be stated in the purchase order. ST3kp, ST3ps and ST3sp should not be supplied interchangeably without technical approval.
ST3 Steel Chemical Composition
The following table shows ladle-analysis ranges associated with the principal ST3 variants under GOST 380-2005.
| Grade | Carbon C, % | Manganese Mn, % | Silicon Si, % | Phosphorus P, max % | Sulphur S, max % |
|---|---|---|---|---|---|
| ST3kp / Ст3кп | 0.14–0.22 | 0.30–0.60 | 0.05 maximum | 0.040 | 0.050 |
| ST3ps / Ст3пс | 0.14–0.22 | 0.40–0.65 | 0.05–0.15 | 0.040 | 0.050 |
| ST3sp / Ст3сп | 0.14–0.22 | 0.40–0.65 | 0.15–0.30 | 0.040 | 0.050 |
Final chemistry must be verified against the applicable standard edition and mill test certificate.
ST3 Steel Mechanical Properties
ST3 steel mechanical properties vary according to product form, thickness, subgrade, rolling condition and testing standard.
| Property | Commercial reference range |
|---|---|
| Yield strength | Approximately 235–285 MPa, depending on thickness and product |
| Tensile strength | Approximately 370–510 MPa |
| Elongation | Generally 20% minimum or as specified |
| Hardness | Dependent on product and delivery condition |
| Weldability | Generally suitable for structural welding with an approved procedure |
Do not use general website values for final engineering calculations. The purchaser should specify required minimum yield strength, tensile strength, elongation, impact testing and thickness range.
ST3 Steel Equivalent Grades
| Russian grade | Common international comparison | Important qualification |
|---|---|---|
| ST3sp | EN S235JR | Common commercial comparison, not an exact universal equivalent |
| ST3sp | ASTM A36 | Frequently compared for structural applications, but chemistry and testing differ |
| ST3 | ISO E235 family | Selection depends on product and applicable ISO edition |
| ST3 | Chinese Q235 family | Often compared commercially; project approval is required |
Customers searching for “ST3 steel equivalent to ASTM A36” or “ST3 steel equivalent to EN S235JR” should provide the complete project specification before substitution.
ST3 Steel Available Forms
Russian Metals can process enquiries for:
- ST3 steel plate
- ST3 hot-rolled steel plate
- ST3 steel sheet
- ST3 steel round bar
- ST3 steel rod
- ST3 flat bar
- ST3 structural sections
- ST3sp steel plate
- ST3sp steel round bar
- Cut-to-size plate and fabricated blanks
Dimensions and tolerances are confirmed according to the selected product standard and mill availability.
ST3 Steel Applications
ST3 carbon structural steel is commonly considered for:
- Structural frames
- General welded fabrication
- Support structures
- Base plates
- Brackets and frames
- Industrial platforms
- Machinery housings
- Agricultural equipment
- General engineering components
- Non-critical shafts, pins and fabricated parts
ST3 should not be selected for pressure service, low-temperature impact-critical structures or highly stressed components without engineering review.
ST3 Steel Plate Supplier in India
Russian Metals supports buyers seeking a GOST 380-2005 ST3 steel plate supplier, ST3 steel plate supplier in India or Russian ST3 steel exporter from India.
For an accurate quotation, provide:
- Required grade: ST3kp, ST3ps or ST3sp
- Product form
- Plate thickness, width and length
- Quantity
- Surface condition
- Edge condition
- Required tolerances
- Mill test certificate requirement
- Third-party inspection requirement
- Delivery destination
Live stock and ST3 steel price per kg in India must be confirmed at the time of enquiry because pricing changes with dimensions, quantity, origin, testing and delivery terms.
Steel 35 GOST 1050 Carbon Steel
Steel 35 is a quality structural carbon steel used for engineering components requiring greater strength and hardness than ordinary structural steel.
It may be supplied as Steel 35 round bar, hot-rolled bar, forged bar, flat bar, plate or machining stock, depending on the required standard and manufacturing route.
Steel 35 under GOST 1050 must not be confused with DIN 2391 St35 precision-tube steel.
Steel 35 Chemical Composition
| Element | Steel 35 composition, % |
|---|---|
| Carbon C | 0.32–0.40 |
| Silicon Si | 0.17–0.37 |
| Manganese Mn | 0.50–0.80 |
| Nickel Ni | 0.30 maximum |
| Sulphur S | 0.035 maximum |
| Phosphorus P | 0.030 maximum |
| Chromium Cr | 0.25 maximum |
| Copper Cu | 0.30 maximum |
| Arsenic As | 0.08 maximum |
Chemical values must be checked against the governing standard, product form and MTC.
Steel 35 Mechanical Properties
The following values are useful reference minimums for rolled Steel 35 products. Actual properties depend on section size and delivery condition.
| Property | Reference value |
|---|---|
| Yield strength | 315 MPa minimum |
| Tensile strength | 530 MPa minimum |
| Elongation | 20% minimum |
| Reduction of area | 45% minimum |
| Impact toughness, where ordered | Subject to applicable test and heat-treatment condition |
For larger diameters, forged bars, heat-treated products or special applications, the required properties must be stated separately.
Steel 35 Heat Treatment and Hardness
Steel 35 can be supplied or processed in conditions such as:
- Hot rolled
- Forged
- Annealed
- Normalized
- Cold drawn
- Quenched and tempered
- Induction hardened for selected component designs
Hardness cannot be stated as one universal number because it changes substantially with section size, heat-treatment cycle and final tempering condition.
The purchase order should identify:
- Required supply condition
- Target hardness range
- Hardness test method
- Testing location
- Required tensile properties
- Machining allowance
- Decarburization limits
- Surface-quality requirement
Steel 35 has more limited weldability than low-carbon ST3 steel. Welding should be completed using a qualified procedure with suitable preheating and post-weld controls where required.
Steel 35 Equivalent Grades
| Standard system | Common comparison |
|---|---|
| SAE/AISI | AISI 1035 |
| EN | C35 or C35E family |
| DIN/Werkstoff | C35-related designations |
| Chinese GB | Grade selected by chemistry and mechanical-property comparison |
These are cross-reference grades, not automatic equivalents. AISI 1035, C35 and Russian Steel 35 may differ in residual-element limits, testing, heat treatment and dimensional standards.
Steel 35 Applications
Steel 35 may be used for:
- Shafts
- Axles
- Pins
- Levers
- Connecting parts
- Couplings
- Spindles
- Bolts and studs
- Machine components
- Forged engineering parts
- Moderately stressed mechanical components
Steel 35 Round Bar Supplier in India
Russian Metals can support enquiries for GOST 1050-2013 Steel 35 round bar, Steel 35 forged bar and Russian Steel 35 round bar export requirements.
Available supply routes may include:
| Product | Possible delivery condition |
|---|---|
| Steel 35 round bar | Hot rolled, normalized, annealed or peeled |
| Steel 35 forged bar | Forged, normalized, annealed or rough machined |
| Steel 35 bright bar | Cold drawn, peeled or ground |
| Steel 35 flat bar | Hot rolled or cut from plate |
| Steel 35 plate | Subject to mill route and project requirements |
Send the diameter, length, quantity, heat-treatment condition, hardness, testing and delivery location to receive a commercial offer.
Steel 45 GOST 1050 Medium-Carbon Steel
Steel 45 is a widely used Russian medium-carbon steel selected for parts requiring higher strength, hardness and wear resistance than Steel 35.
Russian Metals can process requirements for Steel 45 round bar, forged bar, hot-rolled bar, plate, sheet and machining stock.
Steel 45 under GOST 1050 must not be confused with DIN 2391 St45 precision-tube material or machinery models containing “ST45” in their product name.
Steel 45 Chemical Composition
| Element | Steel 45 composition, % |
|---|---|
| Carbon C | 0.42–0.50 |
| Silicon Si | 0.17–0.37 |
| Manganese Mn | 0.50–0.80 |
| Nickel Ni | 0.25–0.30 maximum, subject to standard |
| Sulphur S | 0.040 maximum |
| Phosphorus P | 0.035 maximum |
| Chromium Cr | 0.25 maximum |
| Copper Cu | 0.25–0.30 maximum, subject to standard |
| Arsenic As | 0.08 maximum |
The applicable MTC and standard edition remain the controlling documents.
Steel 45 Mechanical Properties
| Property | Reference value |
|---|---|
| Yield strength | 355 MPa minimum |
| Tensile strength | 600 MPa minimum |
| Elongation | 16% minimum |
| Reduction of area | 40% minimum |
| Hardness | Depends on supply and heat-treatment condition |
These mechanical-property references generally apply to specified rolled-product conditions and dimensional limits. Forged, annealed, normalized and quenched-and-tempered bars may have different requirements.
Steel 45 Heat Treatment and Hardness
Steel 45 responds effectively to heat treatment and can be supplied or processed as:
- Hot rolled
- Forged
- Annealed
- Normalized
- Quenched and tempered
- Induction hardened
- Surface hardened where the component design permits
Steel 45 heat treatment and hardness must be defined from the required component performance rather than selected from a generic internet chart.
Important ordering parameters include:
- Final section size
- Required core strength
- Surface-hardness target
- Case or hardened-depth requirement
- Tempering condition
- Machinability requirement
- Distortion allowance
- Test location
- Applicable hardness scale
Because of its higher carbon content, Steel 45 has restricted weldability compared with ST3 steel. Fabrication requires an approved welding procedure and appropriate thermal controls.
Steel 45 Equivalent Grades
| Standard system | Common comparison |
|---|---|
| SAE/AISI | AISI 1045 |
| EN | C45, C45E or C45EC family |
| JIS | S45C |
| DIN/Werkstoff | C45-related grades, including commonly referenced 1.1191 variants |
| Chinese GB | Grade 45 family, subject to specification comparison |
Steel 45 equivalent to AISI 1045, Steel 45 equivalent to C45 and Steel 45 equivalent to JIS S45C are common procurement searches. However, the materials are not universally interchangeable without reviewing chemistry, hardenability, mechanical properties, testing and delivery condition.
Steel 45 vs AISI 1045 and C45 Steel
| Comparison factor | Russian Steel 45 | AISI 1045 | EN C45 family |
|---|---|---|---|
| Material class | Medium-carbon engineering steel | Medium-carbon engineering steel | Non-alloy quality or special steel |
| Nominal carbon range | Approximately 0.42–0.50% | Similar medium-carbon range | Similar medium-carbon range |
| Common forms | Bar, forging, plate and components | Bar, plate and forgings | Bar, plate and forgings |
| Direct substitution | Requires technical approval | Requires technical approval | Requires technical approval |
| Controlling document | GOST specification and MTC | ASTM/SAE product specification | EN product and delivery standard |
Steel 45 Applications
Steel 45 is commonly considered for:
- Transmission shafts
- Drive shafts
- Gears
- Spindles
- Axles
- Pins
- Bushes
- Couplings
- Crank components
- Machine-tool parts
- Agricultural machinery parts
- Forged engineering components
- Induction-hardened shafts
- Wear-loaded mechanical parts
Steel 45 Round Bar and Forged Bar Supplier
Russian Metals supports buyers seeking:
- GOST 1050-2013 Steel 45 round bar supplier
- Russian Steel 45 round bar exporter
- Steel 45 forged bar manufacturer or supplier
- Steel 45 round bar supplier in India
- Steel 45 plate supplier and stockist
- GOST Steel 45 exporter from India
- Russian medium-carbon Steel 45 supplier
Required dimensions, quantity, heat treatment, hardness, surface condition and test certificates must be included in the enquiry.
DIN 2391 St35 Precision Steel Tube
DIN 2391 St35 is a legacy precision-tube designation commonly associated with material number 1.0308.
It is requested for seamless cold-drawn precision tubes, honed tubes and mechanical or hydraulic tubing. Modern orders may require alignment with the applicable EN 10305 precision-tube standard.
DIN 2391 St35 Pipe Specification
| Specification item | Requirement |
|---|---|
| Legacy standard | DIN 2391 |
| Grade | St35 |
| Material reference | 1.0308 |
| Product | Seamless precision carbon steel tube |
| General size range | OD 4–190 mm × wall thickness 0.5–15 mm |
| Common outer-dimension range | 4.0–60.0 mm |
| Common wall-thickness range | 0.5–8 mm |
| Maximum standard length listed | Up to 6000 mm |
| Delivery conditions | BK, BKW, BKS, GBK and NBK |
| Modern standard reference | Applicable EN 10305 requirement as specified by purchaser |
Actual manufacturing limits depend on size, tolerance, delivery condition and mill capability.
DIN 2391 St35 Chemical Composition
| Standard | Grade | Carbon C, max % | Manganese Mn, min % | Silicon Si, max % | Sulphur S, max % | Phosphorus P, max % |
|---|---|---|---|---|---|---|
| DIN 2391 | St35 | 0.17 | 0.40 | 0.35 | 0.025 | 0.025 |
DIN 2391 St35 Mechanical Properties
| Delivery condition | Symbol | Tensile strength, N/mm² | Yield strength, N/mm² | Elongation, % |
|---|---|---|---|---|
| Cold drawn, hard | BK | 480 | Not individually stated | 6 |
| Cold drawn, soft | BKW | 420 | Not individually stated | 10 |
| Cold drawn and stress relieved | BKS | 420 | 315 | 35 |
| Normalized | NBK | 340–470 | 235 | 25 |
| Annealed | GBK | 315 | Not individually stated | 14 |
Values must be verified against the ordered standard, size and delivery condition.
DIN 2391 St35 Tube Tolerances
| Outside diameter range, mm | Outside-diameter tolerance |
|---|---|
| 4–30 | ±0.08 mm |
| 31–40 | ±0.15 mm |
| 41–50 | ±0.20 mm |
| 51–60 | ±0.25 mm |
| 61–70 | ±0.30 mm |
| 71–80 | ±0.30 mm |
| 81–90 | ±0.40 mm |
| 91–100 | ±0.45 mm |
| Wall-thickness tolerance | Value |
|---|---|
| Standard reference tolerance | ±10% |
Special tolerances must be stated in the enquiry and confirmed by the manufacturer.
DIN 2391 St35 NBK and GBK Tubes
DIN 2391 St35 NBK tubes are normalized in a controlled atmosphere after cold working. This condition is commonly requested where dimensional precision, further forming and consistent mechanical behaviour are important.
DIN 2391 St35 GBK tubes are annealed after cold working. The selected condition should reflect the required bending, flaring, machining or hydraulic-system performance.
Russian Metals can process enquiries for:
- DIN 2391 St35 NBK precision tube
- DIN 2391 St35 GBK tube
- St35 BKS stress-relieved tube
- 1.0308 seamless circular tubes
- St35 honed tube
- Thin-wall St35 steel tube
- EN 10305 precision steel tube
- Custom-cut seamless precision tubing
DIN 2391 St45 Precision Steel Tube
DIN 2391 St45 is a legacy higher-strength precision-tube designation commonly associated with material reference 1.0408.
It is used for mechanical, hydraulic and precision engineering tube applications requiring higher tensile and yield values than St35.
DIN 2391 St45 Pipe Specification
| Specification item | Requirement |
|---|---|
| Legacy standard | DIN 2391 |
| Grade | St45 |
| Material reference | 1.0408 |
| General size range | OD 4–190 mm × wall thickness 0.5–15 mm |
| Common outer-dimension range | 4.0–60.0 mm |
| Common wall-thickness range | 0.5–8 mm |
| Maximum standard length listed | Up to 6000 mm |
| Delivery conditions | BK, BKW, BKS, GBK and NBK |
| Modern standard reference | Applicable EN 10305 requirement as specified |
DIN 2391 St45 Chemical Composition
| Grade | Carbon C, max % | Silicon Si, max % | Manganese Mn, min % | Phosphorus P, max % | Sulphur S, max % |
|---|---|---|---|---|---|
| DIN 2391 St45 | 0.21 | 0.35 | 0.40 | 0.025 | 0.025 |
DIN 2391 St45 Mechanical Properties
| Delivery condition | Symbol | Tensile strength, N/mm² | Yield strength, N/mm² | Elongation, % |
|---|---|---|---|---|
| Cold drawn, hard | BK | 580 | Not individually stated | 5 |
| Cold drawn, soft | BKW | 520 | Not individually stated | 8 |
| Cold drawn and stress relieved | BKS | 520 | 375 | 12 |
| Annealed | GBK | 390 | Not individually stated | 21 |
| Normalized | NBK | 440–570 | 255 | 21 |
DIN 2391 St45 Tube Tolerances
| Outside diameter range, mm | Outside-diameter tolerance |
|---|---|
| 4–30 | ±0.08 mm |
| 31–40 | ±0.15 mm |
| 41–50 | ±0.20 mm |
| 51–60 | ±0.25 mm |
| 61–70 | ±0.30 mm |
| 71–80 | ±0.30 mm |
| 81–90 | ±0.40 mm |
| 91–100 | ±0.45 mm |
| Wall-thickness tolerance | Value |
|---|---|
| Standard reference tolerance | ±10% |
St35 vs St45 Precision Tube
| Parameter | DIN 2391 St35 | DIN 2391 St45 |
|---|---|---|
| Material number commonly referenced | 1.0308 | 1.0408 |
| Carbon, maximum | 0.17% | 0.21% |
| BK tensile reference | 480 N/mm² | 580 N/mm² |
| BKS yield reference | 315 N/mm² | 375 N/mm² |
| General positioning | Lower-carbon precision tube | Higher-strength precision tube |
| Grade selection | Based on forming and strength requirements | Based on higher mechanical-property requirements |
DIN 17175 St35.8 Seamless Boiler Tube
DIN 17175 St35.8 is a legacy seamless-tube designation associated with boiler, pipeline, pressure-vessel and elevated-temperature applications.
It must not be confused with DIN 2391 St35 precision tubing or GOST Steel 35.
| Specification item | Description |
|---|---|
| Legacy designation | DIN 17175 St35.8 |
| Common material reference | 1.0305 |
| Product type | Seamless boiler or elevated-temperature tube |
| General use | Boiler, heat exchanger, pressure and process piping |
| Procurement requirement | Grade, dimensions, design temperature, design pressure and applicable current standard |
| Testing | Chemical, tensile, dimensional, hydrostatic or NDT as specified |
| Certification | MTC and inspection level as agreed |
For pressure applications, the purchaser must identify the legally applicable code and current material standard. A legacy St35.8 designation alone is not sufficient for final engineering approval.
Available Forms and Supply Range
| Grade | Plate and sheet | Round bar | Forged bar | Precision tube | Cut-to-size service |
|---|---|---|---|---|---|
| ST3 | Available subject to enquiry | Available | On request | Separate pipe specification required | Available on request |
| Steel 35 | Subject to mill route | Commonly requested | Available on request | Separate tube standard required | Available on request |
| Steel 45 | Subject to mill route | Commonly requested | Available on request | Separate tube standard required | Available on request |
| DIN 2391 St35 | Not the principal product form | Not applicable as grade intent | Not applicable | Principal product | Cut lengths on request |
| DIN 2391 St45 | Not the principal product form | Not applicable as grade intent | Not applicable | Principal product | Cut lengths on request |
| DIN 17175 St35.8 | Not the principal product form | Not applicable | Not applicable | Principal product | Cut lengths on request |
Russian Metals can evaluate non-standard dimensions, machining allowances, custom lengths, export packing and project-specific inspection requirements.
Standards, Inspection and Testing
Depending on the product and order specification, documentation and inspection may include:
- Chemical-composition verification
- Tensile testing
- Yield-strength testing
- Elongation testing
- Hardness testing
- Impact testing where required
- Dimensional inspection
- Surface inspection
- Ultrasonic testing
- Eddy-current testing for precision tubes
- Hydrostatic testing where applicable
- Positive material or laboratory chemical verification where specified
- Mill test certificate
- EN 10204 inspection document when contractually requested
- Third-party inspection
- Heat-number traceability
- Country-of-origin documentation
- Packing list and export documentation
Testing is not automatically included in every commercial offer. State every mandatory test and certification requirement before placing the order.
Stock, MOQ, Pricing and Delivery
Stock availability changes according to grade, size, mill origin and delivery condition.
Information Required for a Quotation
Send the following details:
- Grade and exact designation
- Applicable standard and edition
- Product form
- Diameter, thickness, width and length
- Required quantity
- Heat-treatment or delivery condition
- Hardness and mechanical-property requirements
- Tolerances
- Surface condition
- Testing and MTC requirements
- Third-party inspection requirement
- Delivery city, port or country
Minimum Order Quantity
MOQ depends on whether the material is available from stock, requires mill production or needs custom processing.
- Stock sizes may support smaller quantities.
- Non-standard sizes may require a production MOQ.
- Forged bars may require heat-based or piece-based minimum quantities.
- Cut-to-length tubes may have processing minimums.
- Export orders may be consolidated subject to availability.
Russian Metals will confirm the commercial MOQ after reviewing the complete requirement.
Price Factors
ST3 steel price per kg, Steel 35 price per kg and Steel 45 price per kg depend on:
- Grade
- Standard
- Dimensions
- Quantity
- Origin
- Heat treatment
- Surface finish
- Testing
- Machining or cutting
- Packing
- Freight
- Currency and raw-material movement
Request a live quotation rather than publishing or relying on an outdated fixed price.
Why Send Your Enquiry to Russian Metals?
Russian Metals helps buyers identify and source the correct steel designation instead of treating similar-looking grade names as interchangeable.
Our commercial process can support:
- Russian and legacy European grade identification
- Plates, bars, forgings and precision tubes
- Custom dimensions
- Heat-treatment requirements
- Mill test certificates
- Inspection coordination
- Export packing
- Domestic and international delivery enquiries
- Technical clarification before quotation
Contact Russian Metals with your material specification, quantity and destination to receive availability and commercial terms.
Frequently Asked Questions | Часто задаваемые вопросы
Click a question to open its answer. English and Russian FAQs are combined in one section for easier navigation.
ENWhat is ST3 steel?
ST3 is an ordinary-quality Russian structural carbon steel designation associated with GOST 380. Common variants include ST3kp, ST3ps and ST3sp, which differ principally in their deoxidation condition and silicon content.
ENIs ST3 steel equivalent to ASTM A36?
ST3sp and ASTM A36 are frequently compared for general structural use, but they are not exact universal equivalents. Chemistry, thickness-dependent properties, impact requirements and testing must be compared before substitution.
ENIs ST3 steel equivalent to EN S235JR?
ST3 is commonly compared with the EN S235 family. The correct equivalent depends on the ST3 subgrade, product form, thickness, impact requirement and governing specification.
ENWhat is the difference between Steel 35 and DIN 2391 St35?
Steel 35 is a Russian quality carbon steel grade used for bars, forgings and engineering components. DIN 2391 St35 is a precision-tube material designation. They should not be treated as the same product.
ENWhat is Steel 35 equivalent to?
Steel 35 is commonly compared with AISI 1035 and EN C35 grades. Final substitution requires a detailed comparison of chemistry, properties, heat treatment and product standard.
ENWhat is Steel 45 equivalent to?
Steel 45 is commonly compared with AISI 1045, EN C45 and JIS S45C. These are cross-reference grades and require technical approval before substitution.
ENWhat is the difference between Steel 35 and Steel 45?
Steel 45 has a higher carbon range and generally offers higher strength, hardness and wear resistance. Steel 35 generally provides better ductility and easier processing.
ENCan Russian Metals supply ST3 steel plate in India?
Russian Metals can process enquiries for ST3 steel plate, sheet, round bar and related products in India. Availability, dimensions, MOQ, price and delivery must be confirmed against the required specification.
ENCan DIN 2391 St35 and St45 tubes be supplied with MTCs?
MTCs and inspection documents can be requested as part of the purchase specification. The required certificate type and testing scope must be stated before quotation.
RUЧто такое сталь Ст3?
Сталь Ст3 — это углеродистая конструкционная сталь обыкновенного качества по ГОСТ 380. Основные варианты марки: Ст3кп, Ст3пс и Ст3сп.
RUЧем отличаются Ст3сп, Ст3пс и Ст3кп?
Обозначения показывают степень раскисления стали. Ст3кп является кипящей сталью, Ст3пс — полуспокойной, а Ст3сп — спокойной сталью. Химический состав и область применения могут отличаться.
RUКакой зарубежный аналог стали Ст3?
Сталь Ст3 часто сравнивают с S235JR и ASTM A36. Эти марки не являются полностью идентичными, поэтому перед заменой необходимо проверить химический состав, механические свойства, толщину и требования проекта.
RUЧто такое сталь 35 ГОСТ 1050?
Сталь 35 — качественная конструкционная углеродистая сталь, применяемая для валов, осей, пальцев, рычагов, крепежных и машиностроительных деталей.
RUКакие аналоги имеет сталь 35?
К распространенным сравнительным маркам относятся AISI 1035 и европейские марки семейства C35. Окончательная замена должна быть согласована техническим специалистом.
RUЧто такое сталь 45?
Сталь 45 — среднеуглеродистая качественная конструкционная сталь, применяемая для валов, шестерен, шпинделей, осей, втулок и других нагруженных деталей.
RUКакие аналоги имеет сталь 45?
Сталь 45 часто сравнивают с AISI 1045, C45 и JIS S45C. Перед заменой необходимо сравнить стандарт, химический состав, термообработку и механические свойства.
RUГде купить сталь Ст3, сталь 35 или сталь 45?
Для получения предложения от Russian Metals необходимо указать марку стали, стандарт, размеры, количество, состояние поставки, требования к сертификатам и место доставки.
Request a Quote for ST3, Steel 35, Steel 45, St35 or St45
Send Russian Metals your complete material requirement for:
- GOST 380-2005 ST3 steel plate
- ST3sp steel round bar
- ST3 hot-rolled steel plate
- GOST 1050 Steel 35 round bar
- Steel 35 forged bar
- GOST 1050 Steel 45 round bar
- Steel 45 forged bar
- DIN 2391 St35 NBK tube
- DIN 2391 St45 precision tube
- DIN 17175 St35.8 seamless boiler tube
Include the exact grade, standard, dimensions, quantity, delivery condition, testing requirements and destination for a faster and technically accurate quotation.
ST3, Steel 35, Steel 45, St35 and St45 Supply Support
Submit the exact grade, standard, dimensions, quantity, delivery condition, testing requirements and destination for a technically accurate quotation.
Russian and legacy European designation support.
Chemical, mechanical and traceability support.
Cut lengths and non-standard dimensions.
Packing and domestic or international delivery enquiries.