GKH Steels for nitriding
Spécifications
- EU 33CrMoV12-9
- USA UNS:K24340
Typical composition
- C 0,3
- Cr 3
- Mo 1
- V 0,2
Applications
• GKH is used to produce nitrided parts which need to be extremely stable after hardening and tempering. It is particularly suitable for producing parts for deep nitriding.
• Gears, crankshafts, precision parts, aircraft parts.
•Bearing rings working up to 400°C.
Mechanical properties
• Nitriding steel with a good level of hardenability and particularly high mechanical properties, impact strength and fatigue limit (GKHW and GKHYW grades).
• It may be nitrided in the heat treated condition to obtain a strength from 900 N/mm2 to 1350 N/mm2.
Mechanical features
- Heat treatmentT + Rv 600°CT + Rv 660°C
- UTS (N/mm²)13001000
- A (%)1520
- KCU (J/cm²)70170
- Solution treated : H
Annealed : R - Thermo-mechanical treatment : TM
Quenched and tempered : T+RV - Sub-zero treatment : F
Solution treated and aged : T+RV
GKH_FR
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See also
ARMAD
Through hardening steels
- Gun barrel
- Pistols
- Rifle
Spécifications
- EU : 32CrMoV12-10
Heat treatment
- T + Rv 570°C
- T + Rv 610°C
Read more
FND
Steels for carburizing
- Aero engine
- Gears
- Injection system
Spécifications
- EU : 15NiMoSiCr10
- USA : UNS:K51570
Heat treatment
- T + F + Rv 300°C
- Tgaz + F + Rv 300°C
Read more
GKP
Steels for nitriding
- Aero engine
- Crankshaft
- Engine
- Gears
- Injection system
- Nitriding
Spécifications
- EU : 32CrMoV5
- USA : UNS:K23280
Heat treatment
- T + Rv 640°C
- T + Rv 660°C
Read more
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