AISI 1020 Carbon Steel
We are AISI 1020 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 AISI 1020 Carbon Steels (UNS G10200 / SAE 1020) that meet national and international quality standards for general engineering, automotive, structural, and pressure vessel applications. AISI 1020 Carbon Steel is an unalloyed low carbon engineering steel known for its excellent weldability, good machinability (65%), high cold formability, and reliable tensile performance. This grade responds exceptionally well to case hardening (carburizing), producing a wear-resistant surface layer while retaining a tough, ductile core. AISI 1020 is typically supplied in hot rolled, cold drawn, or normalized condition, ensuring consistent mechanical strength and smooth surface quality. This carbon steel grade is widely used for manufacturing shafts, axles, pins, bushings, carburized gears, studs, seamless tubes, and forged fittings.
Our AISI 1020 Carbon Steels are 100% Prime – 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 ASTM A108 / SAE standards. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is AISI 1020 Carbon Steel?
AISI 1020 Carbon Steel (UNS G10200 / SAE 1020) is a low carbon plain engineering steel grade known for its excellent weldability, good machinability, reliable ductility, and uniform structural strength. Supplied in hot rolled, cold drawn, or normalized condition, it provides close dimensional tolerances and smooth finish for general engineering components, machinery shafts, pins, seamless tubes, and forged fittings.
Superior Weldability
Easily welded using standard fusion methods without preheating.
Good Machinability
Cuts, turns, and drills smoothly for general machinery parts.
High Formability
Good elongation and cold bending characteristics for structural forming.
Case Hardening Capacity
Carburizes to form a hard wear layer (55–60 HRC) with a shock-resistant core.
Reliable Core Toughness
Maintains core resilience under mechanical impact and vibration.
Certified Compliance
Supplied with full MTC and strict quality compliance.
Why Choose STEEL MART for AISI 1020 Carbon Steel
STEEL MART is the preferred choice for purchasing AISI 1020 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 AISI 1020 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 AISI 1020 Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of AISI 1020 Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.18 – 0.23 % |
| Manganese (Mn) | 0.30 – 0.60 % |
| Silicon (Si) | 0.15 – 0.35 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.040 % Max |
This chemical composition ensures optimal machinability, weldability, and strength balance.
Equivalent Grades of AISI 1020 Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | 1020 / UNS G10200 |
| BS 970 | 070M20 / EN 3B |
| DIN / W.Nr. | C22 / 1.0402 |
| EN | C22E / 1.1151 |
| JIS | S20C |
These equivalent grades ensure global compatibility across engineering standards.
Mechanical Properties of AISI 1020 Carbon Steel
The mechanical properties of AISI 1020 Carbon Steels make them suitable for general engineering components, shafts, and welded structures. In hot rolled or cold drawn condition, it offers a tensile strength of 420–540 MPa and yield strength of 290–390 MPa.
Heat Treatment & Processing of AISI 1020 Carbon Steel
AISI 1020 Carbon Steels undergo standard thermal processing to enhance structural properties or case hardness.
Carburizing
Heated to 880°C–920°C for deep carbon case layer formation.
Annealing
Heated to 870°C–910°C and furnace cooled for maximum softness.
Normalizing
Heated to 890°C–920°C and air-cooled to refine grain structure.
Case Quenching
Quenched from 760°C–780°C to achieve a 55–60 HRC wear surface.
AISI 1020 Carbon Steel Industry Applications
AISI 1020 Carbon Steels are widely used across automotive, machinery, and pressure vessel sectors.
Machinery Shafts & Axles
Used for general drive shafts, axles, and spindles.
Automotive Bushings & Pins
Used for king pins, shackles, levers, and bushings.
Studs & Fasteners
Used for threaded rods, bolts, studs, and tie bars.
Seamless Tubes & Pipe Fittings
Used for seamless pipes, pressure tubing, and forged flanges.
Agricultural Equipment
Used in farm machinery pins, brackets, and linkages.
Welded Structural Components
Used in welded machinery frames, mounting plates, and fixtures.
Availability and Customization
At STEEL MART, we supply AISI 1020 Carbon Steels in a wide range of sizes and specifications.
| Diameter / Thickness | Diameter ranging from 6 mm to 400 mm / Plates & Seamless Tubes available |
| Condition | Available in Hot Rolled / Cold Drawn / Normalized condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Finish | Bright cold drawn, black hot rolled, and turned finish available |
| Customization | Custom cut sizes available 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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AISI 1020 Carbon Steel (UNS G10200 / SAE 1020) is a premier low-carbon engineering steel widely used across automotive, machinery, pressure piping, and structural fabrication. With its excellent weldability, good machinability (65%), high formability, and case-hardening capacity, it provides long-term reliability for drive shafts, pins, studs, carburized gears, seamless tubes, and forged fittings. Supplied by STEEL MART with strict quality control and Mill Test Certification, AISI 1020 Carbon Steel is a versatile and dependable solution for industrial applications.
Frequently Asked Questions
Common answers regarding AISI 1020 Carbon Steel specifications and parameters.
Its low carbon content (0.18–0.23%) provides superior weldability with all fusion welding methods without risk of cracking or preheating.
Yes, it carburizes well to achieve a hard wear-resistant case (55 to 60 HRC) over a ductile core.
SAE 1020 / UNS G10200, BS 970 070M20 (EN 3B), DIN C22 (1.0402), and JIS S20C.
Machinery shafts, axles, pins, bushings, studs, seamless tubes, pressure fittings, and carburized gears.
Round bars, Flat bars, Hex bars, Seamless tubes, Plates, and custom cut sizes.