- Cold Roll
- Hot Roll
- Other Metals
Type 718 alloy (N07718) is an austenitic nickel-base superalloy which is used in applications requiring high strength to approximately 1400°F (760°C) and oxidation resistance to approximately 1800°F (982°C). In addition, the alloy exhibits excellent tensile and impact strength even at cryogenic temperatures. High strength at room and elevated temperatures is developed by a precipitation heat treatment at 1325°F (718°C) with cooling and a hold at 1150°F (621°C).
The relatively slow response to precipitation hardening permits repair welding of the Type 718 Alloy even in the aged condition. The alloy is generally supplied in the solution treated condition.
RESISTANCE TO CORROSION AND OXIDATION
Type 718 alloy has good resistance to oxidation and corrosion at temperatures in the alloy’s useful strength range in atmospheres encountered in jet engines and gas turbine operations.