NP 37Cr4 Structural and constructional steels
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NP 37Cr4 Chemical Composition
EN 10250-3: 2022 / Open die steel forgings for general engineering purposes - Part 3: Alloy special steels
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NP 37Cr4 Physical Properties
Temperature
This material has 686 properties — only a subset is shown here.
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NP 37Cr4 Heat Treatments
- Austenizing temperature: 850 ± 5°C
- Hardening: 825-865°C (Temperatures at the lower end of the range are generally used for water, and those at the upper end for oil quenching; Time for austenitizing as a guide: at least 30 min.);
Quenching agent: Oil or water (When choosing the quenching agent, the influence of other parameters, such as shape, dimensions and quenching temperature, on properties and crack susceptibility, should be taken into account. Other quenching agents such as synthetic quenchants may also be used.);
Tempering: 540-680°C (Time for tempering as a guide: at least 60 min.);
End quench test austenitizing: 845 ± 5°C (Time for austenitizing as a guide: 30-35 min.). The given conditions are for guidance. However, the temperatures specified for the end quench test are mandatory.
NP 37Cr4 Mechanical Properties
Temperature
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NP 37Cr4 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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- 271Cross References
- 46Composition
- 97Mechanical Properties
- 3Physical Properties
- 13Heat Treatment
- 3Metallography
- -Machinability
- -Stress-Strain
- -Formability
- 5Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- 46Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 202Total Suppliers