UNI 35 NiCrMo 15 Structural and constructional steels
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UNI 35 NiCrMo 15 Chemical Composition
UNI 6925: 1971 / Aircraft metallic materials. Hardening and tempering alloyed steel (C 0,35%, Ni 3,75%, Cr 1,75% and Mo 0,35%)
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UNI 35 NiCrMo 15 Physical Properties
Temperature
This material has 62 properties — only a subset is shown here.
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UNI 35 NiCrMo 15 Heat Treatments
- Bars and wires hardened and tempered were heat treated as follows: Harden by air cooling from 850 to 870°C followed by tempering at 520 to 540°C for one hour.
Annealing: Heat to 640 - 660°C, hold at temperature for a minimum of 2 hours then slow cool in the furnace (approximately 50°C/hour) to 500°C or below, followed by cooling to room temperature in still air.
To avoid an unacceptable reduction of toughness, tempering should not be carried out in the range of 260 to 420°C.
Stress relieve by heating to 180 - 210°C, holding at temperature for a minimum of 2 hours, then cool in still air.
UNI 35 NiCrMo 15 Mechanical Properties
Temperature
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UNI 35 NiCrMo 15 International Equivalent Materials
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