SAE/AISI 1141 Round Bar (UNS G11410)
SAE/AISI 1141 Round Bar is a medium-carbon, resulfurized steel specifically developed for enhanced machinability while maintaining good strength and wear resistance. The added sulfur improves chip formation and surface finish during machining, making AISI 1141 an excellent choice for high-speed machining of precision components where extensive machining is required.
Key Features
- Resulfurized medium-carbon steel for superior machinability
- Better surface finish and tool life during machining
- Good strength and wear resistance compared to low-carbon steels
- Suitable for induction and flame hardening
- Cost-effective alternative to alloy steels for machined parts
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| DIN | C45S |
| EN | EN8M |
| JIS | S45C (Modified) |
| IS | IS 1570 Gr. 45C8 (Resulfurized) |
Sizes
- Diameter: 6 mm to 400 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available on request
AISI 1141 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.37 – 0.44 |
| Manganese (Mn) | 1.35 – 1.65 |
| Sulfur (S) | 0.08 – 0.13 |
| Phosphorus (P) | ≤ 0.040 |
| Iron (Fe) | Balance |
SAE 1141 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 620 – 750 MPa |
| Yield Strength | ~415 MPa |
| Elongation | 12 – 16% |
| Hardness | 187 – 229 HB |
UNS G11410 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1460°C |
| Thermal Conductivity | 49.5 W/m·K |
| Modulus of Elasticity | 205 GPa |
Types of SAE/AISI 1141 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Bright Round Bar
- Turned & Polished Round Bar
Applications
- High-speed machined components
- Shafts, pins, and studs
- Automotive fasteners and fittings
- Hydraulic and pneumatic parts
- Gears and couplings (moderate duty)
- General engineering machined parts
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