SAE 5120 Steel — Specifications & Listings
SAE
American case hardening chrome steel per SAE standard. Close equivalent to 20MnCr5 but with lower Mn and Cr content. Good case hardening response.
Grade Details
| Grade | SAE 5120 |
| Standard | SAE |
| Description | American case hardening chrome steel per SAE standard. Close equivalent to 20MnCr5 but with lower Mn and Cr content. Good case hardening response. |
| Applications | Case hardened gears, pins, shafts, cams, automotive transmission parts |
Chemical Composition (%)
| C |
Mn |
Cr |
Si |
S |
P |
| 0.17–0.22 |
0.70–0.90 |
0.70–0.90 |
0.15–0.35 |
≤0.040 |
≤0.035 |
Mechanical Properties
| Tensile Strength |
750–950 MPa |
| Case Hardness HRC |
58–62 |
| Core Hardness HB |
207–269 |
| Elongation |
≥10% |
Typical Available Sizes
| Round Bar |
16mm–200mm dia |
| Flat Bar |
20×8mm–150×40mm |
Sizes are indicative. Contact seller for exact availability.
Active SAE 5120 Listings on M-EX