FDG Steels for carburizing
Spécifications
- EU 20NiCrMo13
- USA UNS:K41910
Typical composition
- C 0,2
- Ni 3,2
- Cr 1
- Mo 0,5
Applications
• Gears subjected to high stresses, diverse parts subject to wear and fatigue in service.
• In the quenched and tempered condition: safety-critical parts.
Mechanical properties
• High mechanical properties.
• Good fatigue strength.
• After carburizing, quenching and tempering, the surface hardness is around 700 HV.
• For some carburizing applications, oil quenching can be replaced with gas pressure quenching in order to minimise distortion due to the heat treatment.
The mechanical properties thus obtained are equivalent to those of the FADH grade.
Mechanical features
- Heat treatmentT + Rv 150°C
- UTS (N/mm²)1500
- A (%)13
- KCU (J/cm²)90
- Solution treated : H
Annealed : R - Thermo-mechanical treatment : TM
Quenched and tempered : T+RV - Sub-zero treatment : F
Solution treated and aged : T+RV
FDG_GB
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See also
FADH
Steels for carburizing
- Aero engine
- Bearings
- Carburizing
- Firearms
- Pistols
- Rifle
- Transmission system
Spécifications
- EU : 14NiCrMo13-4
Heat treatment
- T + Rv 150°C
Read more
FADS
Steels for carburizing
Spécifications
- EU : 16NiCrMo16-5
Heat treatment
- T + F + Rv 150°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