QRO 90 SUPREME
EXCELLENT HIGH TEMPERATURE STRENGTH AND HOT HARDNESS
- Excellent high temperature strength and hot hardness
- Very good temper resistance
- Unique resistance to thermal fatigue
- Excellent thermal conductivity
- Good toughness and ductility in longitudinal and transverse directions
- Uniform machinability
- Good heat treatment properties
- Hot wear resistance 55%
- Plastic deformation resistance 60%
- Heat checking resistance 80%
- Premature cracking resistance 35%
Reference Grade Hot Work (H13)
- Hot wear resistance 40%
- Plastic deformation resistance 40%
- Heat checking resistance 40%
- Premature cracking resistance 35%
Chemical composition
Carbon | 0.38 | Silicon | 0.30 | Manganese | 0.80 |
Chromium | 2.60 | Molybdenum | 2.30 | Vanadium | 0.90 |