H10 Tool Steel
1.2365
- EN1.2365
- ENX32CrMoV3-3
- AISIH10
Chromium-molybdenum-vanadium hot work tool steel with high toughness, thermal conductivity and resistance to thermal shock. Retains hot strength up to around 600 °C; preferred for tooling exposed to strong temperature cycling.
01Material Properties
- High toughness and thermal fatigue resistance
- Good thermal conductivity, low thermal expansion
- Hot strength up to around 600 °C
- Suitable for water cooling
- Suitable for nitriding and PVD coating
- Hardens to around 50 HRC
02Applications
- Extrusion dies and mandrels for aluminium and copper alloys
- Forging dies and die inserts
- Brass die casting dies
- Hot shear blades
- Hot pressing tools
03Delivery Condition
- Max. 229 HB, soft annealed.
04Heat Treatment
Typical values
- Soft annealing
- 750–800 °C; max. 229 HB
- Stress relieving
- 600–650 °C
- Preheating
- Stepwise: 600–650 °C and 850 °C
- Hardening
- 1020–1060 °C; 20–30 min
- Quenching medium
- Oil, air/pressurised gas or 500–550 °C salt bath
- As-quenched hardness
- ≈ 50–52 HRC
- Tempering
- At least twice, min. 2 h; 550–650 °C
- Working hardness
- 42–50 HRC
- Nitriding
- 500–550 °C
Heat treatment cycle (schematic)
Tempering diagram (approximate)
Values are approximate and for information only; they vary with section size, heat and furnace conditions. Binding values are determined from the manufacturer’s data under laboratory conditions.
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