Alloy Steel 8620
Material Data Sheet
AISI 8620 alloy steel is a common, carburizing alloy steel. This alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. The following datasheet will provide more details about AISI 8620 alloy steel.
Chemical Composition
| Chemistry | Content(%) |
|---|---|
| Iron, Fe | 96.90 – 98.02 |
| Manganese, Mn | 0.7 – 0.9 |
| Nickel, Ni | 0.4 – 0.7 |
| Chromium, Cr | 0.4 – 0.6 |
| Carbon, C | 0.18 – 0.23 |
| Silicon, Si | 0.15 – 0.35 |
| 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 |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 530 MPa | 76900 psi |
| Yield Strength | 385 MPa | 55800 psi |
| Elastic Modulus | 190 – 210 GPa | 27557 – 30458 ksi |
| Bulk Modulus | 140 GPa | 20300 ksi |
| Shear Modulus | 80 GPa | 11600 ksi |
| Poissons Ratio | 0.27 – 0.30 | 0.27 – 0.30 |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop | 169 | 169 |
| Hardness, Rockwell B | 80 | 80 |
| Hardness, Vickers | 155 | 155 |
| Machinability | 65 | 65 |
Applications
Alloy Steel 4130 is used in the following application areas:
- Valve bodies
- Gas bottles
- Roll cages
- Automotive/race car parts
- Hydraulic tools
- Pumps
- Fittings
- Engine mounts
- Welded tubing
- Clutch and flywheel components
