What is AISI1144?
AISI1144 steel is an AISI/SAE standard material with free-cutting steel. This comprehensive guide covers chemical composition, mechanical properties, and machining characteristics per AISI/SAE standards.
Chemical Composition
| Element | Content (%) | Standard |
|---|---|---|
| C | 0.40-0.48 | AISI/SAE |
| Mn | 1.35-1.65 | AISI/SAE |
| S | 0.08-0.13 | AISI/SAE |
Mechanical Properties
| Property | Value | Standard |
|---|---|---|
| Tensile Strength | ≥630 MPa | AISI/SAE |
| Yield Strength | ≥420 MPa | AISI/SAE |
| Elongation | ≥14% | AISI/SAE |
| Hardness | 205 HV | HV |
| Density | 7.85 g/cm³ | 20°C |
Key Features
- Good mechanical properties for general applications
- Suitable for heat treatment
- Good machinability
- Widely used in automotive and machinery
- Cost-effective carbon steel
Applications
- Automotive components
- Machine parts and shafts
- Bolts and fasteners
- Structural applications
Machinability
AISI1144 steel has good machinability. Recommended: Carbide tools, cutting speed 100-180 m/min, feed 0.15-0.35 mm/rev, soluble oil coolant.
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