MIL 9Ni-4Co-0.3C Structural and constructional steels
Material group:
Ferrous Alloys / Structural and constructional steels
Country/Standard:
United States / MIL
Data updates
Latest Update: 2014-10
Total number of updates: 1
Update History
MIL 9Ni-4Co-0.3C Chemical Composition
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View Complete Material Data ›MIL 9Ni-4Co-0.3C Physical Properties
Temperature
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MIL 9Ni-4Co-0.3C Heat Treatments
- Normalizing temperature range 1625-1675°F, air quenched; Annealing temperature range 1250-1150°F. Duplex annealed - hold 4 hrs. +/-0.25 hrs. at 1250°F +/-25°F, air cool to room temperature, then reheat to 1150+/-25°F and hold for 8 hrs. +/- 0.25hrs and air cool to room temperature. (Recommended subcritical anneal temperature is 1250°F); Austenitizing temperature range 1475-1525°F; Medium for quenching: oil. Cool to -100°F for 1 hour minimum within 2 hours after quenching and before tempering.
MIL 9Ni-4Co-0.3C Mechanical Properties
Temperature
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- Cross References
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- Composition
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1 Mechanical Properties
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3 Physical Properties
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1 Heat Treatment
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