UNI 30 CrMo 4 Structural and constructional steels
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UNI 30 CrMo 4 Chemical Composition
UNI 6403: 1986 / Seamless steel tubes, intended and not intended for heat treatment, for use in road vehicles and for specific purposes
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UNI 30 CrMo 4 Physical Properties
Temperature
This material has 604 properties — only a subset is shown here.
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UNI 30 CrMo 4 Heat Treatments
- Annealed (+A): 650-720°C Normalized (+N): 860-900°C Austenitized: 840-870°C Tempered: 540-680°C
- Forging: 850-1050°C; Queching: 840-860°C (duration of permanence at hardening must be sufficient so that the transformation of steel structure is complete in whole mass of arc rod the duration should not be less than 1/2 hr.), oil (temperature must be between 15-60°C); Tempering: 550-650°C, at least 1 hour. Jominy test piece hard: 850 +/-5°C (piece must always be normalized before the test). Soft annealing: 680-720°C; Normalizing 860-890°C.
UNI 30 CrMo 4 Mechanical Properties
Temperature
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UNI 30 CrMo 4 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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- 255Cross References
- 35Composition
- 70Mechanical Properties
- 3Physical Properties
- 8Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- 2Joints
- -Coatings
- 6Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 225Total Suppliers