EN 3B Carbon Steel
We are EN 3B 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 EN 3B Carbon Steels (BS 970 070M20 / AISI 1020) that meet national and international quality standards for general engineering, structural, and automotive applications. EN 3B Carbon Steel is an unalloyed low carbon mild steel known for its exceptional weldability, good machinability, excellent cold formability, and reliable ductility. This grade is widely used in general engineering components requiring sound structural integrity and ease of fabrication. EN 3B is typically supplied in as-rolled, normalized, or bright drawn condition, ensuring consistent and reliable mechanical performance. This carbon steel grade is widely used for manufacturing welded structures, brackets, spacers, flanges, tie rods, low-stress shafts, and fasteners.
Our EN 3B 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 BS 970 / EN standards. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is EN 3B Carbon Steel?
EN 3B Carbon Steel (BS 970 070M20 / AISI 1020) is an unalloyed low carbon mild steel grade suitable for general engineering and structural applications requiring excellent weldability, high ductility, and reliable machinability. Supplied in bright drawn or hot rolled conditions, it provides smooth surface finishes and tight dimensional tolerances for light-to-medium engineering components.
Exceptional Weldability
Low carbon equivalent enables effortless welding without requiring pre-heating.
Good Machinability
Easy to cut, turn, drill, and shape for low-stress machinery components.
High Ductility
Excellent formability and resilience for cold bending and pressing operations.
Bright Finish Option
Bright drawn bars provide accurate tolerances and smooth surface finish.
Case Hardening
Can be carburized to form a tough wear-resistant outer layer.
Reliability
Guaranteed chemical composition and dimensional compliance.
Why Choose STEEL MART for EN 3B Carbon Steel
STEEL MART is the preferred choice for purchasing EN 3B 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 EN 3B 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 EN 3B Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of EN 3B Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 ā 0.25 % |
| Manganese (Mn) | 0.60 ā 0.90 % |
| Silicon (Si) | 0.05 ā 0.35 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.050 % Max |
This chemical composition ensures optimal strength, ductility, and weldability.
Equivalent Grades of EN 3B Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| BS 970 | 070M20 / 080A15 / EN 3B |
| AISI / SAE | 1018 / 1020 |
| DIN / W.Nr. | C22 / 1.0402 / St37-2 (1.0037) |
| EN | C20 / C22 |
| JIS | S20C / S22C |
These equivalent grades ensure global compatibility across projects.
Mechanical Properties of EN 3B Carbon Steel
The mechanical properties of EN 3B Carbon Steels make them suitable for general engineering and structural components. In normalized or bright drawn condition, this grade delivers balanced tensile strength, high elongation, and reliable impact toughness.
Heat Treatment & Processing of EN 3B Carbon Steel
EN 3B 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 softness and cold forming.
Stress Relieving
Heated to 550Ā°Cā650Ā°C to eliminate machining and welding stresses.
Carburizing / Case Hardening
Carburized at 880Ā°Cā930Ā°C to create a wear-resistant surface shell.
EN 3B Carbon Steel Industry Applications
EN 3B Carbon Steels are widely used across multiple industrial sectors.
General Engineering
Used for low-stress shafts, tie rods, brackets, and spacers.
Automotive Sector
Used in low-stress levers, pins, and welded linkages.
Construction & Structures
Used in structural components, welded plates, and tie bars.
Fasteners & Machined Parts
Used for threaded rods, mild bolts, and nuts.
Agricultural Equipment
Used in farm machinery frames, shafts, and pins.
Industrial Machinery
Used in conveyor rollers, structural guides, and general fixtures.
Availability and Customization
At STEEL MART, we supply EN 3B Carbon Steels in a wide range of sizes and specifications.
| Diameter | Diameter ranging from 10 mm to 350 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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EN 3B Carbon Steel (BS 970 070M20 / AISI 1020) is a versatile low carbon mild engineering steel widely used in general engineering, structural fabrications, and machinery manufacturing. With its exceptional weldability, good machinability, and uniform mechanical properties, it provides long-term reliability for welded structures, brackets, spacers, tie rods, low-stress shafts, and fasteners. Supplied by STEEL MART with strict quality control and Mill Test Certification, EN 3B Carbon Steel is a cost-effective and dependable solution for engineering applications.
Frequently Asked Questions
Common answers regarding EN 3B Carbon Steel specifications and parameters.
It offers an ideal combination of exceptional weldability, good machinability, excellent cold formability, and cost efficiency.
Yes, its low carbon equivalent allows all standard welding processes without requiring pre-heating or post-weld thermal treatment.
BS 970 070M20 / 080A15, AISI 1018 / 1020, DIN C22 (1.0402), and IS 2062.
Yes, it can be carburized to create a hard wear-resistant surface layer with a ductile core.
Round bars, Flat bars, Hex bars, Plates, Sheets, and custom cut sizes.