UNI 18 NiCrMo 7 Structural and constructional steels
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This material has 98 properties — only a subset is shown here.
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UNI 18 NiCrMo 7 Chemical Composition
UNI 7846: 1978 / Finished products in hot rolled unalloyed or special hardening alloyed steel bars and rolls. Quality, requirements and tests
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UNI 18 NiCrMo 7 Physical Properties
Temperature
This material has 98 properties — only a subset is shown here.
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UNI 18 NiCrMo 7 Heat Treatments
- Hot worked at 1100-900°C; Cementation at 870-900°C; Core hardened at 840-870°C; Surface hardened at 800-830°C. Quenched in hot water bath; Stress relieved at 150-200°C.
- 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). Spheroidise Annealed (Spheroidised). Annealed to obtained a lamellar ferrite and pearlite structure (Annealed). The H + T values shown in the mechanical properties table are obtained from an 11mm test bar hardened by oil quenching from 850°C +/- 10°C after holding at temperature for at least 30 minutes, and tempered at 180°C +/- 10°C for at least 1 hour. Final Heat Treatment: Case harden at 870 - 900°C. Harden the core by oil quenching from 840 - 870°C. Harden the case by oil quenching from 800 - 830°C. Finally, temper at 150 - 200°C.
UNI 18 NiCrMo 7 Mechanical Properties
Temperature
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UNI 18 NiCrMo 7 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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- 19Cross References
- 28Composition
- 39Mechanical Properties
- 3Physical Properties
- 5Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 4Total Suppliers