UNI 41 CrMo 4 Structural and constructional steels
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UNI 41 CrMo 4 Chemical Composition
UNI 7847: 1979 / Hot rolled, unalloyed and alloyed special steel products, bars and coils, for surface hardening. Qualities, requirements and tests
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UNI 41 CrMo 4 Physical Properties
Temperature
This material has 100 properties — only a subset is shown here.
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UNI 41 CrMo 4 Heat Treatments
- Material is normally supplied in the hot rolled condition but, subject to agreement, may be supplied in one of the following conditions: Soft Annealed (SA) to a maximum hardness by annealing at 680 - 720°C. Spheroidise Annealed (Spheroidised). Annealed to obtain a ferritic/pearlite structure (Annealed). Hardened and Tempered (H+T). The H+T values shown in the mechanical properties table are obtained from a test piece hardened by oil quenching from 830 - 850°C followed by tempering at 550 - 650°C for at least 1 hour. The temperature of the oil must be between 15 - 60°C. The Rockwell C Scale hardness minimum value (Heat Treated condition) shown in the mechanical properties table is the surface hardness which must be obtained whether material is in the normalised condition and subsequently surface hardened or whether the material is in the hardened and tempered condition and subsequently surface hardened; Both treatments are followed by tempering at 140-180°C for approximately 1 hour. The specification gives a normalising treatment of 850 - 880°C.
UNI 41 CrMo 4 Mechanical Properties
Temperature
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UNI 41 CrMo 4 International Equivalent Materials
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- 39Cross References
- 7Composition
- 8Mechanical Properties
- 24Physical Properties
- 2Heat Treatment
- -Metallography
- -Machinability
- 1Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 19Total Suppliers