ST20 Structural Carbon Steel Supplier, Manufacturer & Exporter in India
Russian Metals is a leading supplier, manufacturer, and exporter of ST20 Steel (Ст20 Steel), a widely used low carbon structural steel grade. This weldable carbon steel is extensively used in construction, engineering, fabrication, and general structural applications.
Product Overview of ST20 Steel
ST20 Steel (Ст20 Steel) is a low carbon structural steel widely used in construction and general engineering applications. It is comparable to ASTM A36 and EN S235JR in general structural performance.
This structural carbon steel offers excellent weldability, good machinability, and reliable strength, making it suitable for fabrication and industrial use. Russian Metals supplies high-quality ST20 structural steel for engineering and construction industries worldwide.
- Low carbon structural steel
- Excellent weldability and formability
- Good structural strength
- Cost-effective engineering material
- ASTM A36 / EN S235JR comparable
What is ST20 Steel?
ST20 Steel (Ст20 Steel) is a Russian low carbon structural steel grade used in welded structures, pipelines, and general engineering applications. It is known for its good ductility, weldability, and affordability.
This mild steel grade ST20 is widely used in construction frameworks, machine parts, and structural fabrication.
- Low carbon content
- Excellent weldability
- Good formability
- Reliable structural strength
- Cost-effective performance
- Wide industrial usage
Why ST20 Steel Performs in Construction Applications
This low carbon structural steel provides excellent flexibility and easy fabrication, is highly suitable for welding and structural assembly as a weldable carbon steel, is ideal for building and infrastructure applications as a construction steel grade, offers balanced strength and ductility for engineering use, and is widely used in manufacturing and fabrication industries as industrial structural steel.
ST20 Steel Supply Range
Russian Metals supplies ST20 Structural Carbon Steel in multiple forms for construction, engineering, and fabrication applications.
Variants of ST20 Steel
Russian Metals supplies multiple variants and customized dimensions of ST20 steel products
Advantages of ST20 Steel
Engineered for construction and general engineering where weldability, cost-effectiveness, and structural strength are critical.
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Excellent weldability easy to weld and fabricate for construction use
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Cost effective material affordable solution for industrial applications
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Good structural strength reliable performance in engineering structures
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Wide availability commonly used and easily sourced steel grade
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Versatile applications suitable for construction and fabrication industries
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Good formability and ductility for fabrication
Where ST20 Steel Is Used
From building frameworks to pipelines, ST20 steel delivers reliable structural performance.
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Construction structures and building frameworks
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Pipelines and tubing systems
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Industrial fabrication and machine components
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Structural beams and welded assemblies
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Engineering projects and fabrication workshops
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General infrastructure
Technical Specifications of ST20 Steel
Complete technical reference for engineers, buyers, and quality assurance teams.
Product Specifications of ST20 Steel
Product details, available forms, usage areas, and supply information.
| Specification | Details |
|---|---|
| Product Name | ST20 Steel (Ст20 Steel, Carbon steel grade ST20) |
| Brand | Russian Metals |
| Material Type | Carbon Steel / Structural Steel |
| Grade | ST20, Ст20, ASTM A36 (approx), EN S235JR (approx) |
| Steel Classification | Low carbon structural steel / Weldable carbon steel / Mild steel grade ST20 |
| Available Forms | Plate, sheet, round bar, rod, pipe, tube, flat bar, structural beam, welded pipe, coil |
| Common Usage | Construction structures, building frameworks, pipelines, industrial fabrication, machine components |
| Surface Finish | Bright, mill finish as required |
| Shape Options | Round, flat, plate, sheet, structural sections, custom components |
| Size Options | Custom sizes available as per requirement |
| Heat Treatment Condition | Hot rolled condition / Normalized condition / As rolled condition |
| Standard | GOST / Russian structural steel standards |
| Supply Type | Supplier, manufacturer, exporter and stockist |
| Price | ST20 steel price available on request |
| Customization | Available as per drawings, dimensions and application needs |
Chemical & Mechanical Properties of ST20 Steel
Certified composition and performance metrics for ST20 low carbon structural steel according to GOST and international standards.
Characteristics of ST20 Steel
| Property | Value |
|---|---|
| Grade | ST20 (Ст20) - Low Carbon Structural Steel |
| Classification | Weldable carbon steel / Mild steel grade ST20 |
| Designation | Construction and industrial structural steel |
Chemical Composition in % for Grade 20 (20)
| C | Si | Mn | Ni | S | P | Cr | Cu | As |
|---|---|---|---|---|---|---|---|---|
| 0.17 - 0.24 | 0.17 - 0.37 | 0.35 - 0.65 | max 0.3 | max 0.04 | max 0.035 | max 0.25 | max 0.3 | max 0.08 |
Temperature of Critical Points for Grade 20 (20)
| Ac1 (°C) | Ac3 / Acm (°C) | Ar3 / Arcm (°C) | Ar1 (°C) |
|---|---|---|---|
| 724 | 845 | 815 | 682 |
Mechanical Properties at 20°C for Grade 20 (20)
| Assortment | Dimension (mm) | Direct. | σB (MPa) | σT (MPa) | δ5 (%) | ψ (%) | KCU (kJ/m²) | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| Sheet heat-treatment, GOST 4041-71 | 4 - 14 | - | 340-490 | - | 28 | - | - | - |
| Pipe hot strain, GOST 550-75 | - | - | 431 | 255 | 22 | 50 | 780 | - |
| Pipe, GOST 8731-87 | - | - | 412 | 245 | 21 | - | - | - |
| Pipe, GOST 10705-80 | - | - | 372 | 225 | 22 | - | - | - |
| Rolled stock, GOST 1050-88 | to 80 | - | 410 | 245 | 25 | 55 | - | Normalizing |
| Rolled stock cold-worked, GOST 1050-88 | - | - | 490 | - | 7 | 40 | - | - |
| Band annealed, GOST 2284-79 | - | - | 310-540 | - | 18 | - | - | - |
| Band cold-worked, GOST 2284-79 | - | - | 490-830 | - | - | - | - | - |
Brinell Hardness for 20 (20)
| Condition / Standard | HB 10⁻¹ (MPa) |
|---|---|
| Annealing, GOST 1050-88 | 163 |
| Cold-drawn, cold-worked, GOST 1050-88 | 207 |
| Sheet, GOST 4041-71 | 127 |
| Pipe, GOST 550-75 | 156 |
| Pipe, GOST 8731-87 | 156 |
| Sheet trick, GOST 1577-93 | 156 |
Technological Properties for Grade 20 (20)
| Property | Value |
|---|---|
| Weldability | without limitations |
| Flakes | not predisposed |
| Temper brittleness | not predisposed |
Physical Properties for Grade 20 (20)
| T (°C) | E × 10⁻⁵ (MPa) | α × 10⁶ (1/°C) | λ (W/m·°C) | ρ (kg/m³) | C (J/kg·°C) | R × 10⁹ (Ω·m) |
|---|---|---|---|---|---|---|
| 20 | 2.13 | - | 52 | 7859 | - | - |
| 100 | 2.03 | 11.6 | 50.6 | 7834 | 486 | 219 |
| 200 | 1.99 | 12.6 | 48.6 | 7803 | 498 | 292 |
| 300 | 1.9 | 13.1 | 46.2 | 7770 | 514 | 381 |
| 400 | 1.82 | 13.6 | 42.8 | 7736 | 533 | 487 |
| 500 | 1.72 | 14.1 | 39.1 | 7699 | 555 | 601 |
| 600 | 1.6 | 14.6 | 35.8 | 7659 | 584 | 758 |
| 700 | - | 14.8 | 32 | 7617 | 636 | 925 |
| 800 | - | 12.9 | - | 7624 | 703 | 1094 |
| 900 | - | - | - | 7600 | 703 | 1135 |
| 1000 | - | - | - | - | 695 | - |
Equivalent Steels for Grade 20 (20)
Indicated both exact and nearest equivalents
| USA | Germany DIN,WNr | Japan JIS | France AFNOR | England BS | European EN | Italy UNI | Belgium NBN | Spain UNE | China GB | Sweden SS | Bulgaria BDS | Hungary MSZ | Poland PN | Romania STAS | Czechia CSN | Austria ONORM | Switzerland SNV | South Korea KS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| USA | Germany DIN,WNr | Japan JIS | France AFNOR | England BS | European EN | Italy UNI | Belgium NBN | Spain UNE | China GB | Sweden SS | Bulgaria BDS | Hungary MSZ | Poland PN | Romania STAS | Czechia CSN | Austria ONORM | Switzerland SNV | South Korea KS |
| 1020 1023 1024 G10200 G10230 H10200 M1020 M1023 | 1.0402 1.0405 1.1151 C22 C22E C22R Ck22 Cm22 Cq22 St35 St45-8 | S20C S20CK S22C STB410 STKM12A STKM12A-S STKM13B STKM13B-W | 1C22 2C22 AF42 AF42C20 C20 C22 C22E C25E XC15 XC18 XC25 | 050A20 055M15 070M20 070M26 1449-22CS 1449-22HS 1C22 22HS 430 C22 C22E | 1.0114 Fe37-3FN Fe37-3FU Fe37B1FN Fe37B1FU Fe37B3FN Fe37B3FU S235 S235J0 S235J2G3 S235JR S235JRG2 | C18 C20 C21 C22 C22E C22R C25 C25E | C25-1 C25-2 | 1C22 C22 C25k F.112 F.1120 | 1C22 20 20G 20R 20Z | 1450 | 20 C22 C22E | A45.47 C22E | 20 K18 | OLC20 OLC20X | 12022 12024 | 1020 M1020 | Ck22 | SM20C SM20CK SM22C |
Types of Delivery for Grade 20 (20)
| Code | Description |
|---|---|
| B03 | Metal forming treatment. Forgings |
| В22 | Graded and shaped rolling |
| B23 | Sheets and Strips |
| B24 | Ribbons |
| B32 | Graded and shaped rolling |
| B33 | Sheets and Strips |
| B34 | Ribbons |
| В62 | Steel pipes and connecting parts to them |
| В71 | Low-carbon steel wire |
| В72 | Medium-high and high-carbon steel wire |
| В76 | Metal nets |
Control & Diagnostics of ST20 Steel
Every batch is tested to meet international and GOST industry standards.
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Chemical composition testing
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Mechanical property testing
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Weldability analysis
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Surface quality inspection
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Dimensional accuracy checks
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Ultrasonic testing (if required)
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Material traceability certification
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Compliance with GOST standards
Each product is inspected to ensure compliance with industrial and GOST quality standards.
Trusted Partner for ST20 Steel
Premium quality structural steel materials with global supply capability from India.
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Trusted structural steel supplier specialized in Russian carbon steel ST20 and structural grades
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Wide product range in plates, sheets, bars, pipes, tubes, and structural sections
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GOST certified quality manufactured as per Russian and international standards
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Competitive pricing for cost-effective steel solutions for industrial needs
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Custom manufacturing support for custom sizes and structural components
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Reliable supply chain with fast delivery for construction and engineering projects
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Strong technical engineering expertise
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Fast global delivery from India
Order ST20 Steel from Russian Metals
Russian Metals is your trusted supplier of ST20 Steel (Ст20 Steel), low carbon structural steel, and weldable carbon steel products. We deliver high-quality structural steel suitable for construction, engineering, and industrial fabrication applications.
* ST20 (Ст20) - Low carbon structural steel: chemical composition, mechanical properties, physical properties, critical points, equivalent grades (ASTM A36, EN S235JR, C22), and applications for construction structures, building frameworks, pipelines, industrial fabrication, and general engineering.
Contact Russian Metals today to order premium ST20 plates, sheets, bars, rods, pipes, tubes, structural beams, coils, and industrial steel products for your project requirements.