Alloy Steel 8617
Material Data Sheet
Alloy steel 8615 is a case-hardening steel containing nickel, chromium, and molybdenum as alloying elements. The alloy shows good strength and toughness properties.
Chemical Composition
| Chemistry | Content(%) |
|---|---|
| Iron, Fe | 98.0 |
| Manganese, Mn | 0.7 – 0.9 |
| Nickel, Ni | 0.4 – 0.7 |
| Chromium, Cr | 0.4 – 0.6 |
| Phosphorous, P | ≤ 0.035 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Carbon, C | 0.15 – 0.20 |
| Sulfur, S | ≤ 0.04 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cc | 0.284 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 248 | 248 |
| Hardness, Knoop | 272 | 272 |
| Rockwell, B | 98 | 98 |
| Rockwell, C | 23 | 23 |
| Hardness, Vickers | 261 | 261 |
| Tensile Strength, Ultimate | 834 MPa | 121000 psi |
| Tensile Strength, Yield | 625 MPa | 90600 psi |
| Elongation at Break | 19% | 19% |
| 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 |
Applications
Alloy Steel 8617 is used in the following application areas:
- Cam Shafts
- Fasteners
- Gears
