TCVN 31CrMoV9 Structural and constructional steels
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This material has 142 properties — only a subset is shown here.
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TCVN 31CrMoV9 Chemical Composition
TCVN 12142-5: 2017 / Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels
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TCVN 31CrMoV9 Physical Properties
Temperature
This material has 142 properties — only a subset is shown here.
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TCVN 31CrMoV9 Heat Treatments
- 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 680-720°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 480-570°C (time for nitriding depends on the desired depth of the nitrided case).
TCVN 31CrMoV9 Mechanical Properties
Temperature
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TCVN 31CrMoV9 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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- 61Cross References
- 8Composition
- 21Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
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