Stainless Steels (Aerospace Grades)

Precipitation-hardening and austenitic/martensitic grades for corrosion resistance and strength in structural and engine applications.

Grade / Alloy	UNS/W.Nr.	Key Specs (Examples)	Typical Properties & Uses
304/304L	S30400 / 1.4301	EN 10088, AMS 5513 (sheet), AMS 5639 (bar)	Versatile corrosion resistance, good formability; used in cabin components, fuel tanks, structural parts, non-critical aerospace elements.
316/316L	S31600 / 1.4401	EN 10088, AMS 5524 (sheet), AMS 5648 (bar)	Enhanced chloride and pitting resistance, high temp strength; used in exhaust components, high-humidity environments, engine parts.
310/310S/310H	S31000/S31008/S31009 / 1.4845	EN 10088, AMS 5521 (sheet), AMS 5651 (bar)	High-temperature oxidation up to 2010°F, creep resistance; used in exhaust systems, turbine components, high-temp structural parts.
317L	S31703 / 1.4438	EN 10088, AMS 5653	Superior pitting and corrosion resistance over 316; used in corrosive environments, chemical processing parts in aerospace.
321/321H	S32100/S32109 / 1.4541	AMS 5645 (bar), AMS 5510 (sheet)	Titanium-stabilized for intergranular corrosion, high temp up to 1500°F; used in exhaust manifolds, jet engine components, turbine parts.
347/347H	S34700/S34709 / 1.4550	AMS 5646 (bar), AMS 5512 (sheet)	Niobium-stabilized for creep resistance at >1000°F; used in high-temp welded components, engine parts, structural elements.
904L	N08904 / 1.4539	EN 10088	Super austenitic with high corrosion resistance to acids; used in extreme corrosive aerospace environments, fuel systems.
17-4PH	S17400 / 1.4542	AMS 5643 (bars/forgings), AMS 5604 (sheet/plate)	High strength, good corrosion; aircraft structures, landing gear, fasteners.
17-7PH	S17700 / 1.4568	AMS 5528 (sheet/strip), AMS 5644 (bars)	High strength, fatigue resistance; structural parts, springs, fasteners up to 600°F.
15-5PH	S15500 / 1.4540	AMS 5659 (bars), AMS 5862 (plate)	High toughness, strength; landing gear, valves, gears.
13-8Mo	S13800 / 1.4534	AMS 5629 (bars), AMS 5864 (plate)	Ultra-high strength, toughness; jet engine parts, fasteners, nuclear components.

For full chemical compositions, mechanical properties, heat treatments, and certifications, download our data sheets (linked per grade). Additional exotic/rare grades available on request.