Complete hardness HRC chart for commonly heat treated metals, alloy steels, tool steels, stainless steels, carbon steels, die steels, and engineering materials.
| Metal / Material | Hardness (HRC) |
|---|---|
| Mild Steel | 20 - 35 HRC |
| EN8 | 45 - 55 HRC |
| EN9 | 48 - 58 HRC |
| EN18 | 28 - 40 HRC |
| EN19 | 28 - 55 HRC |
| EN24 | 35 - 58 HRC |
| EN31 | 60 - 64 HRC |
| EN36 | 58 - 62 HRC |
| OHNS | 58 - 62 HRC |
| D2 Steel | 58 - 62 HRC |
| D3 Steel | 58 - 64 HRC |
| H11 Steel | 45 - 52 HRC |
| H13 Steel | 45 - 54 HRC |
| P20 Steel | 28 - 35 HRC |
| SKD11 | 58 - 62 HRC |
| SKD61 | 45 - 52 HRC |
| 4140 Steel | 28 - 54 HRC |
| 4340 Steel | 35 - 55 HRC |
| 8620 Steel | 58 - 62 HRC |
| 52100 Steel | 60 - 66 HRC |
| A2 Tool Steel | 57 - 62 HRC |
| O1 Tool Steel | 57 - 64 HRC |
| M2 Steel | 60 - 66 HRC |
| M35 Steel | 63 - 67 HRC |
| M42 Steel | 65 - 70 HRC |
| WPS Material | 45 - 60 HRC |
| Die Steel | 48 - 60 HRC |
| Spring Steel | 42 - 52 HRC |
| High Carbon Steel | 50 - 65 HRC |
| Low Carbon Steel | 18 - 30 HRC |
| Medium Carbon Steel | 35 - 50 HRC |
| Case Hardened Steel | 58 - 64 HRC |
| Nitrided Steel | 60 - 72 HRC |
| Carburized Steel | 58 - 65 HRC |
| SS410 | 35 - 50 HRC |
| SS420 | 48 - 58 HRC |
| SS431 | 35 - 45 HRC |
| SS440C | 56 - 60 HRC |
| Martensitic Stainless Steel | 40 - 60 HRC |
| Bearing Steel | 60 - 66 HRC |
| Forged Steel | 28 - 45 HRC |
| Cast Iron | 15 - 35 HRC |
| SG Iron | 20 - 40 HRC |
| Tool Alloy Steel | 50 - 65 HRC |
| Hot Work Steel | 42 - 55 HRC |
| Cold Work Steel | 58 - 64 HRC |
| Shock Resistant Steel | 45 - 58 HRC |
| Chrome Steel | 50 - 62 HRC |
| Nickel Alloy Steel | 35 - 55 HRC |
| Chromium Moly Steel | 30 - 58 HRC |
| Tungsten Steel | 60 - 68 HRC |
| Vanadium Steel | 55 - 65 HRC |
| High Speed Steel | 62 - 68 HRC |