1.2990 Cold Work Tool Steel
1.2990
- EN1.2990
- ENX100CrMoV8-1-1
8 % chromium cold work tool steel with secondary hardening. Combines wear resistance similar to 1.2379 (D2) with higher toughness; can be tempered at high temperature, making it suitable for PVD coating.
01Material Properties
- Combination of wear resistance and toughness
- High-temperature tempering; suitable for PVD coating
- Good dimensional stability
- Better machinability than D2
- Heat treated to 58–63 HRC
02Applications
- Fine blanking tools
- Cold forming and extrusion punches
- Cutting and bending dies
- Thread rolling tools
- Industrial knives
03Delivery Condition
- Max. 250 HB, soft annealed.
04Heat Treatment
Typical values
- Soft annealing
- 820–860 °C; max. 250 HB
- Stress relieving
- 600–650 °C
- Preheating
- 650 °C and 850 °C
- Hardening
- 1030–1080 °C; 15–30 min
- Quenching medium
- Air/pressurised gas, oil or 500–550 °C salt bath
- As-quenched hardness
- ≈ 62–64 HRC
- Tempering
- High: 520–560 °C, 2–3 times → 58–62 HRC (PVD); low: 180–220 °C → 61–63 HRC
- Working hardness
- 58–63 HRC
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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