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High hardenability, hardness and wear resistance, with good high-temperature oxidation resistance. Maintains excellent wear resistance after quenching and polishing, with minimal deformation after heat treatment.
Used for manufacturing high-precision, long-life cold moulds, tools and gauges. Suitable for complex shapes such as punching dies, cold extrusion dies, glass moulds, thread-rolling wheels, stretch plates, cold-cutting tools and precision measuring instruments.
| C | Si | Mn | Cr | V | P (Max) | S (Max) |
|---|---|---|---|---|---|---|
| 1.45–1.60 | 0.20–0.60 | 0.20–0.60 | 11.0–13.0 | 0.70–1.00 | 0.03 | 0.03 |
General Annealed: Hardness ≤ 255 HB
Spheroidized Annealed: Hardness ≤ 255 HB
Superfine Annealed: Hardness ≤ 255 HB
Temperature: 820–850℃
Delivered: Effective thickness of 30mm per hour
Air-cooled furnace cooling to 400℃
Temperature: 860–880℃
Delivered: Effective thickness of 30mm per hour
Furnace cooling to 760–780℃ isothermal
Air-cooled furnace cooling to 400℃
Furnace cooling to 400℃ baked cooled
Microstructure meets criteria SEP1614.
According to SEP1520 standard:
Eutectic carbides ≤ level 2
Carbides ≤ level 2
Carbide particle size ≤ 2 μm
