ST 37 Carbon Steel
We are ST 37 Carbon Steel Manufacturers, Suppliers, and Exporters in Mumbai, India. STEEL MART is an ISO 9001:2015 certified company established in 1986, with decades of experience in supplying high-quality carbon steel products to various industries. We specialize in manufacturing and supplying ST 37 Carbon Steels (DIN 17100 St37-2 / St37-3 / 1.0037 / EN 10025 S235JR) that meet national and international quality standards for general structural engineering, construction, plate fabrication, and machinery manufacturing applications. ST 37 Carbon Steel is a popular German standard unalloyed low carbon mild steel known for its minimum yield strength of 235 MPa, tensile strength of 360-510 MPa, exceptional weldability, high ductility, and superior cold formability. With carbon content restricted below 0.17%, ST 37 allows effortless conventional welding without pre-heating, making it one of the most widely used steel grades for welded structures and general engineering components. ST 37 is typically supplied in hot rolled, cold drawn, normalized, or as-rolled condition, ensuring consistent mechanical properties and ease of fabrication. This carbon steel grade is widely used for manufacturing structural beams, channels, plates, welded pipes, flanges, machinery bases, and general fixtures.
Our ST 37 Carbon Steels are 100% Prime ā Tested & Guaranteed, ensuring precise chemical composition, dimensional accuracy, and consistent mechanical properties. Each product is supplied with proper Mill Test Certificates (MTC) confirming compliance with DIN / EN standards. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is ST 37 Carbon Steel?
ST 37 Carbon Steel (DIN 17100 St37-2 / St37-3 / 1.0037 / EN 10025 S235JR) is an unalloyed low carbon structural mild steel grade suitable for general construction, welded fabrications, tanks, and machinery bases requiring good formability, reliable ductility, and high weldability. Supplied in hot rolled, cold drawn, or normalized condition, it provides smooth surface finishes and reliable structural integrity.
235 MPa Yield Strength
Guarantees minimum yield strength of 235 MPa for general structural fabrications.
Exceptional Weldability
Low carbon content allows effortless arc, MIG, and TIG welding without pre-heating.
High Formability
Offers excellent cold bending, pressing, and machining capabilities.
Charpy Impact Resilience
Delivers 27 J Charpy V-notch impact toughness at room temperature.
Structural Ductility
Uniform mechanical properties prevent brittle failure under ambient loads.
Full Traceability
Supplied with complete chemical heat analysis and EN 10204 3.1 Mill Test Certificates.
Why Choose STEEL MART for ST 37 Carbon Steel
STEEL MART is the preferred choice for purchasing ST 37 Carbon Steel due to its strong reputation for quality and reliability. With over 40 years of experience in the steel industry, the company ensures that every product meets strict industry standards. The company follows strict quality inspection procedures to ensure that every ST 37 Carbon Steel product meets international standards.
Each product is carefully tested to ensure durability, strength, and performance. Customers trust STEEL MART for consistent quality, competitive pricing, and timely delivery. The company maintains a large inventory to meet urgent and bulk requirements efficiently. In addition to ST 37 Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of ST 37 Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.17 % Max |
| Manganese (Mn) | 1.40 % Max |
| Silicon (Si) | 0.05 ā 0.35 % |
| Sulphur (S) | 0.045 % Max |
| Phosphorus (P) | 0.045 % Max |
This chemical composition ensures optimal strength, ductility, and weldability.
Equivalent Grades of ST 37 Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| DIN 17100 | St37-2 / St37-3 / 1.0037 |
| EN 10025 | S235JR / S235J0 / 1.0038 |
| BS 4360 | 40B / 40C |
| ASTM | A36 / A283 Grade C |
| IS | IS 2062 E250 / Fe 410 W |
These equivalent grades ensure global compatibility across projects.
Mechanical Properties of ST 37 Carbon Steel
The mechanical properties of ST 37 Carbon Steels make them suitable for general structural and machinery components. In hot rolled or normalized condition, this grade delivers balanced tensile strength, guaranteed yield strength, and high elongation.
Heat Treatment & Processing of ST 37 Carbon Steel
ST 37 Carbon Steels can be processed using standard heat treatment techniques.
Normalizing
Heated to 890Ā°Cā920Ā°C and air-cooled to refine grain structure.
Annealing
Heated to 870Ā°Cā900Ā°C for maximum cold softness and formability.
Stress Relieving
Heated to 550Ā°Cā650Ā°C to eliminate residual welding stresses.
Carburizing / Case Hardening
Can be surface carburized at 880Ā°Cā930Ā°C for a hard outer layer.
ST 37 Carbon Steel Industry Applications
ST 37 Carbon Steels are widely used across multiple industrial sectors.
General Engineering
Used for low-stress shafts, spacers, brackets, and equipment plates.
Construction & Framing
Used for building columns, beams, channels, and structural trusses.
Welded Pipes & Tanks
Used in welded steel pipes, storage tanks, and duct fabrications.
Automotive Component Frames
Used for chassis brackets, mounting plates, and non-critical fittings.
Agricultural Implements
Used in farm machinery frames, support bars, and hitch components.
Industrial Fixtures
Used in conveyor supports, machine guards, and base plates.
Availability and Customization
At STEEL MART, we supply ST 37 Carbon Steels in a wide range of sizes and specifications.
| Diameter / Thickness | Bars from 10 mm to 350 mm, plates from 2 mm to 200 mm |
| Condition | Available in As-Rolled / Normalized / Bright Drawn condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Finish | Bright drawn, black hot rolled, and turned finish available |
| Customization | Custom cut sizes available as per project requirements |
| Services | Machining, cutting, turning, and grinding services available |
| Certification | Supplied with Mill Test Certificates and inspection reports |
Our strict quality control ensures consistent quality.
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ST 37 Carbon Steel (DIN 17100 St37-2 / St37-3 / 1.0037 / EN 10025 S235JR) is a highly reliable low carbon mild structural steel widely used in general construction, structural fabrications, welded tanks, and machinery components. With 235 MPa minimum yield strength, exceptional weldability, and uniform mechanical properties, it provides long-term dependability for beams, channels, plates, brackets, and equipment bases. Supplied by STEEL MART with strict quality control and Mill Test Certification, ST 37 Carbon Steel is a cost-effective and dependable solution for engineering applications.
Frequently Asked Questions
Common answers regarding ST 37 Carbon Steel specifications and parameters.
ST 37 (St37-2) provides a guaranteed minimum yield strength of 235 MPa.
Yes, its low carbon equivalent allows all conventional welding processes without requiring pre-heating.
DIN 17100 St37-2 / 1.0037, EN 10025 S235JR (1.0038), BS 4360 40B, ASTM A36, and IS 2062 E250.
Yes, it can be carburized to form a tough wear-resistant outer skin with a ductile core.
Round bars, Flat bars, Plates, Sheets, Hex bars, Angles, Channels, and custom cut sizes.