All Materials | Hardness (HRC) | Process Guide
| Material | Hardening Temp (°C) | Quenching | Tempering (°C) | Hardness (HRC) | Application |
|---|---|---|---|---|---|
| EN19 | 820–860 | Oil | 400–650 | 28–45 | Shafts, gears |
| EN24 | 820–850 | Oil | 450–650 | 30–50 | Heavy duty parts |
| EN8 | 800–850 | Water/Oil | 400–600 | 20–30 | General engineering |
| EN31 | 800–840 | Oil | 150–200 | 60–65 | Bearings |
| OHNS | 780–820 | Oil | 150–250 | 58–62 | Dies, tools |
| D2 | 1000–1040 | Air/Oil | 200–500 | 58–62 | Cutting tools |
| H13 | 1000–1050 | Air/Oil | 500–650 | 45–52 | Hot work dies |
| Spring Steel | 850–880 | Oil | 400–500 | 45–55 | Springs |
| Mild Steel | 850–900 | Water/Oil | - | Low | Fabrication |
| Alloy Steel | 800–900 | Oil | 400–650 | 30–50 | Machine parts |
| Tool Steel | 950–1050 | Air/Oil | 200–600 | 50–62 | Tools |
| Die Steel | 1000–1100 | Air/Oil | 500–650 | 45–55 | Dies |
| SS410 | 950–1050 | Air/Oil | 200–400 | 40–50 | Valves |
| SS304 | 1000–1100 | Air | - | Low | Corrosion resistant |
| SS316 | 1000–1100 | Air | - | Low | Chemical industry |
| Cast Iron | 800–900 | Air | 200–400 | 20–40 | Engine parts |