1.2842 steel is a medium alloy cold work steel containing approximately 1% carbon. It has a high hardening ability towards the core. It is dimensionally stable and offers good compression strength. It has a similarity to 1.2510 steel. 1.2842 quality steel is also called oil steel because it can be hardened in oil.
DIN 1.2842 STEEL TYPICAL APPLICATIONS
- Suitable for making various precision templates, block gauges and measuring tools with small deformation and good wear resistance
- Suitable for making small stamping dies with thickness less than 6mm.
- Suitable for scissors, taps, dies and reamers, etc.
- After quenching and low temperature tempering, its hardness is ≤55HRC, which is suitable for molds with small production batches and high requirements on strength and wear resistance.
- Higher-sized punching dies, cold pressing dies, engraving dies, and plastic dies.
- For making thermosetting plastic molds with quenching hardness of 46~52HRC
- Small cores, punches, cavity plates, inserts, etc.
- For solid hardened plastic molds.
- Suitable for making plastic molds with smaller size, more complex shape and higher precision.
- Thermosetting plastic molding die, requiring high wear resistance and high strength
| C | Si | Mn | P | S | Cr | V |
| 0.85 – 0.95 | 0.1 – 0.4 | 1.8 – 2.2 | max 0.03 | max 0.03 | 0.2 – 0.5 | 0.05 – 0.2 |
Mechanical properties of 90MnCrV8, 1.2842
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- Hardness in softening annealed condition: <229HB
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- Hardness after hardening: >61 HRC
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- Hardness after hardening and tempering at temperature
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- 200C = >61.0 HRC
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- 250C = 60.4 HRC
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- 300C = 58.3 HRC
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- 350C = 56.0 HRC
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- 400C = 53.0 HRC
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- 500C = 47.0 HRC
- 550C = 44.0 HRC
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- Hardness after hardening and tempering at temperature
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- Linear expansion coefficient: 11,7 * 10-6 K-1
- Thermal conductivity: 25 W*m*K
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