V422A (1.4935)
Martensitic steel is suitable for intake valves and eventually for exhaust valves as well.
VV40 (1.4731)
Intake valves for gasoline engines and exhaust/intake valves for diesel engines.
VV45 / N4718
Intake valves for gasoline engines and exhaust/intake valves for diesel engines.
VV48
It combines good impact resistance and good mechanical properties. Suitable for valves where the operating temperature does not exceed 550°C.
VV85 (1.4748)
Cr-Mo-V steel that maintains good corrosion resistance at temperatures near 700°C.
