ISO 31CrMo12 Structural and constructional steels
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ISO 31CrMo12 Chemical Composition
ISO 683-10: 1987 / Heat-treatable steels, alloy steels and free-cutting steels - Part 10: Wrought nitriding steels
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ISO 31CrMo12 Physical Properties
Temperature
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ISO 31CrMo12 Heat Treatments
- Quenching: 870-910°C (1/2 hour, min.), oil quench; Tempering: 570-650°C (1 hour); Nitride: 490-510°C, (time for nitriding depends on the desired depth of the nitrided case).
- The base composition and the heat treatment (quenching and tempering) prior to nitriding both have an influence on the results of nitriding treatment. The tempering temperature should not be less than 50°C higher than the nitriding temperature. A difference of less than 50°C should be the subject of a special agreement.
Soft annealing at 650-700°C;
Hardening at 870-930°C (time for austenitizing as a guide: 0.5h minimum) and quenching in oil or water;
Tempering at 580-700°C (time for tempering as a guide: 1h minimum; With very large sizes, the tempering temperature may be agreed at the time of enquiry and order).;
Nitriding at 490-570°C (time for nitriding depends on the desired depth of the nitrided case).
ISO 31CrMo12 Mechanical Properties
Temperature
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ISO 31CrMo12 International Equivalent Materials
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Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
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- 186Cross References
- 16Composition
- 35Mechanical Properties
- 3Physical Properties
- 4Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- 5Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- 20Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 125Total Suppliers