NC40SW Through hardening steels
Spécifications
- Common name 300M
- EU 40NiSiCrMo7
- USA UNS:K44220
Typical composition
- C 0,4
- Ni 1,8
- Cr 0,85
- Mo 0,4
- Si 1,6
Applications
• Shafts.
• Gears.
• Various mechanical parts.
• Heavily stressed aerospace parts.
Mechanical properties
• Melting: consumable electrode remelted steel.
• High mechanical properties.
• Good resistance to impact and fatigue.
• Maintains good properties at high temperatures.
Mechanical features
- Heat treatmentT + Rv 600°CT + 2xRv 300°C
- UTS (N/mm²)14502050
- A (%)1412
- KCU (J/cm²)6050
- Solution treated : H
Annealed : R - Thermo-mechanical treatment : TM
Quenched and tempered : T+RV - Sub-zero treatment : F
Solution treated and aged : T+RV
NC40SW_FR
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See also
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