Almost all type of materials are used for production:

Aluminium alloys (2xxx, 5xxx, 6xxx, 7xxx and 8xxx series) according to part requirements are acquired according to QQ-A , AIR , MIL or Nadcap specification.

Corrosion steel alloys (AISI 3xx and 4xx series) 

Nickel based alloys (Monel, Inconel)

Copper based alloys 

Precipitation hardening steels (17-4 ph, 15-5 ph, 13-8 Mo)

Ballistic steel

Hastelloy (R)