Alloy Steel 6150
Material Data Sheet
AISI 6150 steel is chromium vanadium type spring steel. It’s a similar alloy steel to 5150 steel with small, but effective, vanadium addition, to import greater hardness. AISI steel 6150 has low distortion properties and is easily heat treated. The SAE 6150 steel grade is suitable for oil hardening and tempering.
Chemical Composition
| Chemistry | Content(%) |
|---|---|
| Iron, Fe | 97.09 – 97.72 |
| Chromium, Cr | 0.80 – 1.10 |
| Manganese, Mn | 0.7 – 0.9 |
| Carbon, C | 0.48 – 0.53 |
| Silicon, Si | 0.15 – 0.30 |
| Vanadium, V | ≥ 0.150 |
| Sulfur, S | ≤ 0.04 |
| Phosphorous, P | ≤ 0.035 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cc | 0.284 lb/in³ | Specific Heat Capacity | 0.475 J/g-°C | 0.114 BTU/lb-°F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 331 | 331 |
| Hardness, Knoop | 359 | 359 |
| Hardness, Rockwell B | 99 | 99 |
| Hardness, Rockwell C | 36 | 36 |
| Hardness, Vickers | 350 | 350 |
| Tensile Strength, Ultimate | 1145 MPa | 166100 psi |
| Tensile Strenth, Yield | 1000 MPa | 145000 psi |
| Elongaton at Break | 14.5% | 14.5% |
| Modulus of Elasticity | 205 GPa | 29700 ksi |
| Bulk Modulus | 160 GPa | 23200 ksi |
| Poissons Ratio | 0.29 | 0.29 |
| Machinability | 55% | 55% |
| Shear Modulus | 80.0 GPa | 11600 ksi |
Applications
Alloy Steel 6150 is used in the following application areas:
- Automotive leaf springs
- Valve springs
- Piston rods
- Pump parts
- Spline shafts
