SAE/AISI 1020 Round Bar (UNS G10200)
SAE/AISI 1020 Round Bar is a low-carbon steel widely used for general engineering and structural applications. With slightly higher carbon content than AISI 1018, this grade offers improved strength while retaining excellent weldability, formability, and machinability. AISI 1020 round bars are commonly supplied in hot rolled or cold drawn conditions and are suitable for mild heat treatment and carburizing applications.
Key Features
- Low carbon steel with good strength and ductility
- Excellent weldability and formability
- Good machinability in cold drawn condition
- Uniform mechanical properties
- Suitable for carburizing and case hardening
- Cost-effective for fabrication and mass production
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| DIN | C22 / 1.0402 |
| EN | EN3B / EN3C |
| JIS | S20C |
| IS | IS 1570 Gr. 20MnCr5 (Closest) |
Sizes
- Diameter: 6 mm to 500 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available as per requirement
AISI 1020 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.18 – 0.23 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
SAE 1020 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 420 – 550 MPa |
| Yield Strength | ~295 MPa |
| Elongation | 20 – 28% |
| Hardness | 120 – 170 HB |
UNS G10200 Physical Properties
| Property | Value |
|---|---|
| Density | 7.87 g/cm³ |
| Melting Point | ~1420°C |
| Thermal Conductivity | 51.9 W/m·K |
| Modulus of Elasticity | 205 GPa |
Types of SAE/AISI 1020 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Bright Round Bar
- Turned & Polished Round Bar
Applications
- Structural and fabrication components
- Shafts, pins, and rods
- Automotive body and chassis parts
- Mild engineering components
- Carburized machine parts
- Welded assemblies
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