SAE/AISI 1018 Round Bar (UNS G10180)
SAE/AISI 1018 Round Bar is a low-carbon steel bar widely used for general engineering and machining applications. Known for its excellent weldability, good machinability, and uniform mechanical properties, AISI 1018 steel round bars are ideal for parts requiring moderate strength, good surface finish, and consistent performance. Due to its low carbon content, this grade offers superior formability and is commonly supplied in hot rolled, cold drawn, or turned & polished conditions.
Key Features
- Low carbon steel with excellent weldability
- Good machinability and formability
- Uniform mechanical properties
- Smooth surface finish in cold drawn condition
- Cost-effective material for mass production
- Suitable for carburizing and case hardening
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| DIN | C15 / 1.0401 |
| EN | EN3B |
| JIS | S15C |
| IS | IS 1570 Gr. 15C8 |
Sizes
- Diameter: 6 mm to 500 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available as per requirement
AISI 1018 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.15 – 0.20 |
| Manganese (Mn) | 0.60 – 0.90 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
SAE/AISI Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 440 MPa |
| Yield Strength | 370 MPa |
| Elongation | 15 – 20% |
| Hardness | 126 – 140 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.87 g/cm³ |
| Melting Point | ~1425°C |
| Thermal Conductivity | 51.9 W/m·K |
| Modulus of Elasticity | 205 GPa |
Types of SAE/AISI 1018 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Bright Round Bar
- Turned & Polished Round Bar
Applications
- Shafts and spindles
- Machine parts and fasteners
- Pins, studs, and rods
- Automotive and agricultural components
- Light structural applications
- Carburized components for wear resistance
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