UNI 40 NiCrMo 7 Structural and constructional steels
Data updates
This material has 338 properties — only a subset is shown here.
Unlock full material properties, including detailed values across temperatures and conditions.
Free registration required • Instant access
UNI 40 NiCrMo 7 Chemical Composition
UNI 6926: 1971 / Aircraft metallic materials. Hardening and tempering alloyed steel (C 0,40%, Ni 1,80%, Cr 0,80% and Mo 0,25%)
Looking for full material performance data?
Free registration required • Instant access
UNI 40 NiCrMo 7 Physical Properties
Temperature
This material has 338 properties — only a subset is shown here.
Unlock detailed physical values across temperatures and conditions.
Free registration required • Instant access
UNI 40 NiCrMo 7 Heat Treatments
- Bars and wires were hardened and tempered as follows: Harden by oil quenching from 830 to 850°C, followed by tempering at 530 to 550°C for one hour.
Annealing: Heat to 640 - 680°C, hold 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. Normalizing: Heat to 850 - 870°C, hold at temperature for a minimum of 2 hours then cool in still air.
To avoid an unacceptable reduction of toughness, tempering should not be carried out in the range of 280 to 440°C. - Forging: 850-1050°C; Queching: 830-850°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: 640-680°C; Normalizing 850-880°C.
UNI 40 NiCrMo 7 Mechanical Properties
Temperature
Need complete mechanical properties to make the right choice?
Get complete data on strength, hardness, fatigue, and more.
Free registration required • Instant access
UNI 40 NiCrMo 7 International Equivalent Materials
Showing 15 of 104 results.
Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
Need the full list of 104 international equivalents?
See all 104 equivalent grades with detailed mapping by standard, producer and equivalence category.
Free registration required • Instant access
Optimize material selection for your application - Book A Demo
- 104Cross References
- 33Composition
- 76Mechanical Properties
- 25Physical Properties
- 7Heat Treatment
- -Metallography
- -Machinability
- 15Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 78Total Suppliers