Alloy Steel 4150
Material Data Sheet
Alloy steel 4150 , is a high-carbon alloy that includes chromium, manganese, and molybdenum. This tough steel alloy offers uniform strength, wear resistance, and great hardness. It is important to note that Alloy Steel 4150 must be heat-treated to be suitable for machining. The weldability of Alloy Steel 4150 is high and can be achieved through most commercial methods. The finest of grain size relates directly with the temperature of forging.
Chemical Composition
| Chemistry | Content(%) |
|---|---|
| Iron, Fe | 96.745 – 97.67 |
| Chromium, Cr | 0.8 – 1.1 |
| Manganese, Mn | 0.75 – 1.0 |
| Carbon, C | 0.48 – 0.53 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Sulfur, S | ≤ 0.04 |
| Phosphorous, P | ≤ 0.035 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
| Melting Point | 1427°C | 2600°F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 731 MPa | 106000 psi |
| Yield Strength | 380 MPa | 55100 psi |
| Izod Impact | 24 J | 17.7 ft-lb |
| Bulk Modulus | 140 GPa | 20300 ksi |
| Shear Modulus | 80 GPa | 11600 ksi |
| Elastic Modulus | 190 – 210 GPa | 27557 – 30458 ksi |
| Poisson’s Ratio | 0.27 – 0.30 | 0.27 – 0.30 |
| Elongation at Break | 20.20% | 20.20% |
| Reduction of Area | 40% | 40% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop | 219 | 219 |
| Hardness, Rockwell B | 92 | 92 |
| Hardness, Rockwell C | 13 | 13 |
| Hardness, Vickers | 207 | 207 |
| Machinability | 55 | 55 |
Applications
Alloy Steel 4150 is used in the aerospace, defense, oil and gas, and automotive industries for products such as:
- Shafts
- Valves
- Sprockets
- Aerospace parts
- Axles
- Spindles
- Forged gears
