Alloy Steels

Alloys International 是您合金钢的首选供应商。凭借我们的全球钢厂网络，我们提供商业级航空钢、军用级钢、马氏体时效钢以及用于特定应用的定制产品，包括航空航天钢合金——每笔订单均附带完整认证。

Increased tensile strengthGreater hardenabilitySuperior wear resistance

Grades (25)

Key grades

4340 / 4340 VAR
UNS G43400W.Nr 1.6565
Vacuum arc remelted 4340 for the cleanest structure available in a through-hardening aircraft-quality steel. Landing gear, shafting and high-load structure.
40NiCrMo8-4
AMS 6414 · AMS 6415 · AMS 6454 · AMS 6417 · UNS G43400
300M
300M (4340 modified) is the benchmark ultra-high-strength landing gear steel, vacuum melted and stocked as bar and forging billet.
AMS 6257 · AMS 6419
135 Mod
NIT135 Mod, nitriding quality, vacuum melted. Supplied as bar and billet for gear, shaft and high-fatigue applications.
AMS 6472 · AMS 6470 · AMS 6471
Aermet 100
Aermet 100 combines ultra-high strength with exceptional fracture toughness and stress corrosion resistance. Stocked in bar and billet for critical airframe hardware.
AMS 6478 · AMS 6532
M-50
M50 bearing steel, vacuum melted, for high temperature aircraft engine bearings and races. Also supplied as M50 NiL for case carburized bearing components.
AMS 6490 · AMS 6491
4320
4320 carburizing grade for gears, pinions and bearing races where a hard case and tough core are required.
ASTM A322
4330 Mod
4330M (4330 modified), vacuum melted, for heavy section forgings and high-strength structure with good toughness at section size.
AMS 6411 · AMS 6427
4620
4620 carburizing steel for gears, shafts and pins, supplied in bar and billet.
AMS 6294
6150
W.Nr 1.8159
6150 chrome-vanadium spring and tooling steel with excellent fatigue strength, in bar, billet and wire.
51CrV4
AMS 6448 · AMS 6455 · AMS 6450
8740
8740 chrome-nickel-moly steel, widely called out for fasteners, fittings and machined hardware in the heat treated condition.
AMS 6322 · AMS 6323 · AMS 6324 · AMS 6325 · AMS 6327

Also stocked