Defence & special high-strength materials — sourcing guide & suppliers

HS 7225.40 Aerospace & defence

Types

Armour steel plate (MIL-A-46100, 500 HB) Maraging & ultra-high-strength steels (C300, 4340, 300M) Precipitation-hardening stainless (17-4PH, 15-5PH) & A286 Tungsten heavy alloys & tungsten carbide Ballistic ceramics (alumina, B₄C, SiC) & ballistic fibres