Nickel Alloys
Aimed at operations whose demands are even greater in terms of temperature and corrosion; nickel-based alloys are Villares Metals’ major products. For this reason, the company is among the most renowned steel manufacturers worldwide.
Among the materials produced by the company, the following are noteworthy:
VAT31V
Alloy for exhaust valves used in high power diesel engines. It is resistant to sulfidation, has good corrosion resistance and good mechanical strength up to 815°C.
- ABTN | ASTM | SAE | AISI: Alloy 31V, UNS NO7032, SAE HEV8
- DIN | WNr: –
- Chemical Composition:
| C % | Cr % | Ni % | Fe % | Ti % | OTHERS % |
| 0,04 | 22,50 | 56,50 | Rest. | 2,20 | Mo=2,00 Nb=0,85 |
VAT751 (Alloy 751 | SAE J775)
It is a slight modification of the INCX750 allow to increase creep resistance to 870°C. The applications are the same of the INCX750 alloy, but it especially suits diesel exhaust valves.
- ABTN | ASTM | SAE | AISI: Alloy 751, SAE J775
- DIN | WNr: –
- Chemical Composition:
| C % | Cr % | Ni % | Fe % | Ti % | Al % | OTHERS % |
| 0,05 | 15,50 | Rest. | 7,00 | 2,30 | 1,10 | Nb=1,00 |
VAT80A
It has good creep resistance up to 760°C and, in addition to mechanical strength, it has good fatigue resistance and oxidation resistance at high temperatures. It is used for internal combustion engine valves, screws and molds used at high temperatures.
- ABTN | ASTM | SAE | AISI: B637 e UNS N07080
- DIN | WNr: 17742 e 2.4952
- Chemical Composition:
| C % | Cr % | Ni % | Fe % | Ti % | Al % |
| 0,05 | 19,00 | Rest. | 2,00 | 2,25 | 1,40 |