AISI 9Ni-4Co-0.20C Structural and constructional steels
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This material has 66 properties — only a subset is shown here.
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AISI 9Ni-4Co-0.20C Physical Properties
Temperature
This material has 66 properties — only a subset is shown here.
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AISI 9Ni-4Co-0.20C Heat Treatments
- Normalizing: 871-927°C (1600-1700°F), air quenched. Annealing: 621-677°C (1150-1250°F). Duplex anneal: hold 4 ± 0.25 hours at 677 ± 13.9°C (1250 ± 25°F) , air cool to room temperature, then reheat to 621 ± 13.9°C (1150 ± 25°F) and hold for 8 ± 0.25 hours and air cool to room temperature.
Furnace cool to 538°C (1000°F) or below (rate of furnace cool should be 28°C (50°F) per hour or slower). Recommended subcritical anneal temperature is 677°C (1250°F).
Austenitizing: 829-857°C (1525-1575°F). Medium for quenching: oil, water, polymer. Cool to -73°C (-100°F) for 1 hour minimum within 2 hours after quenching and before tempering.
AISI 9Ni-4Co-0.20C Mechanical Properties
Temperature
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AISI 9Ni-4Co-0.20C International Equivalent Materials
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