Alloy Steel 4135
Material Data Sheet
Alloy Steel 4135 has structural steel properties is a chromium molybdenum alloy steel specification. The AISI 4135 steel type represents a good balance among different properties as strength, toughness, fatigue, and corrosion resistance under extreme working conditions.
Chemical Composition
| Chemistry | Content(%) |
|---|---|
| Iron, Fe | 97.33 – 97.87 |
| Chromium, Cr | 0.8 – 1.1 |
| Manganese, Mn | 0.70 – 0.90 |
| Silicon, Si | 0.15 – 0.35 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Carbon, C | 0.33 – 0.38 |
| Sulfur, S | ≤ 0.04 |
| Phosphorous, P | ≤ 0.035 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 187 – 229 | 187 – 229 |
| Harndess, Knoop | 230 | 230 |
| Hardness, Rockwell B | 94 | 94 |
| Hardness, Rockwell, C | 15 | 15 |
| Hardness, Vickers | 218 | 218 |
| Modulus of Elasticity | 205 GPa | 29700 ksi |
| Bulk Modulus | 160 GPa | 23200 ksi |
| Poissons Ratio | 0.29 | 0.29 |
| Machinability | 70% | 70% |
| Shear Modulus | 80.0 GPa | 11600 ksi |
