EN 16MnCr5: Case-Hardening Manganese-Chromium Steel
EN 10084 · Updated: 2026-05-25
EN 16MnCr5 (1.7131) is a low-carbon manganese-chromium case-hardening steel (0.14-0.19% C, 1.0-1.3% Mn, 0.8-1.1% Cr) widely used in European automotive manufacturing. After carburizing, quenching, and low-temperature tempering, it provides a hard (58-62 HRC) wear-resistant case over a tough core—ideal for gears, shafts, cam followers, and constant-velocity joints. The balanced Mn-Cr chemistry provides good hardenability without the nickel cost of 8620. For higher core strength requirements, 20MnCr5 (higher carbon) is available. Machined in the annealed condition before carburizing for optimal tool life and dimensional control.
Quick Facts
| Category | Alloy Steel |
| Standard | EN 10084 |
| Density | 7.85 g/cm³ |
| Yield Strength | 490 MPa (71 ksi) core |
| Tensile Strength | 785 MPa (114 ksi) core |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| DIN 1.7131 | Compare |
| AISI 5115 | Compare |
| SCM415 | Compare |
| 16MnCr5 | Compare |
| BS 590M17 | Compare |
Related Materials
🧮 Material Weight Calculator
Calculate the weight based on this material's density: 7.85 g/cm³
Frequently Asked Questions
What is the difference between 16MnCr5 and 20MnCr5?
20MnCr5 has higher carbon (0.17-0.22% vs 0.14-0.19%), producing a stronger core after carburizing. Choose 20MnCr5 when the core must withstand higher bending or contact stresses. 16MnCr5 offers better machinability in the annealed condition. Both produce equivalent case hardness after carburizing; the choice depends on core strength requirements.