Alloy Steels
Alloys International is your #1 source for alloy steels. Backed by our global mill network, we offer commercially graded aircraft steel, military-grade steel, maraging steel, and custom products for specific applications, including aerospace steel alloys — with full certification included on every order.
Grades (76)
300M
AMS 6257 · AMS 6419
4008
AMS 6540
4037
AMS 6300
4130
W.Nr 1.7218
25CrMo4
AMS 6356
4132
AMS 6356
4135
W.Nr 1.7220
34CrMo4
AMS 6352 · AMS 6372 · AMS 6365
4140
W.Nr 1.7225
42CrMo4
AMS 6349 · AMS 6379 · AMS 6381 · AMS 6382 · AMS 6395
4142
AMS 6378 · AMS 6411 · AMS 6427
4150
ASTM A29
4337
AMS 6412 · AMS 6413
4320
ASTM A322
4340
W.Nr 1.6565
40NiCrMo8-4
AMS 6417
4615
AMS 6290
4617
AMS 6292
4620
AMS 6294
4640
AMS 6317 · AMS 6312
6130
AMS 6461 · AMS 6462
6150
W.Nr 1.8159
51CrV4
AMS 6448 · AMS 6455 · AMS 6450
8615
AMS 6270
8617
AMS 6272
8620
W.Nr 1.6523
21NiCrMo2-2
AMS 6274 · AMS 6276 · AMS 6277
8630
AMS 6280 · AMS 6530 · AMS 6535 · AMS 6550 · AMS 6281
8735
AMS 6320 · AMS 6357 · AMS 6282 · AMS 6331
8740
AMS 6322 · AMS 6323 · AMS 6324 · AMS 6325 · AMS 6327
8750
AMS 6328
9254
AMS 6451
9310
W.Nr 1.6657
14NiCrMo13-4
AMS 6265 · AMS 6260 · AMS 6267
9315
AMS 6263
50100
AMS 6442
51100
AMS 6449
52100
W.Nr 1.3505
100Cr6
AMS 6440 · AMS 6444 · AMS 6447
10013 (AWS)
AMS 6464
135 Mod
AMS 6472 · AMS 6470 · AMS 6471
17-22A
AMS 6304
17-22A(S)
AMS 6458 · AMS 6302
17-22A(V)
AMS 6303 · AMS 6436
17-22A/S
AMS 6385
4140 Mod
AMS 6379
4142H Modified
AMS 6378
4320H
AMS 6299
4330 Mod
AMS 6411 · AMS 6427
4335 Mod
AMS 6428 · AMS 6429 · AMS 6433 · AMS 6435
4335 Modified
AMS 6430
43BV12
AMS 6266
8740 Mod
AMS 6324
94B17
AMS 6275
Aermet 100
AMS 6478 · AMS 6532
AF-1410
AMS 6527 · 6543. 6522 · AMS 6544 · AMS 6533
CBS 1000M
AMS 6256
CBS 600
AMS 6255
CBS-50NIL
AMS 6278
D-6
AMS 6438
D6AC
AMS 6439
135 MOD
AMS 6470 · AMS 6471 · AMS 6472
H-11
W.Nr 1.2343
X37CrMoV5-1
AMS 6437 · AMS 6485 · AMS 6487 · AMS 6488
H-13
W.Nr 1.2344
X40CrMoV5-1
AMS 6408
HP 9-4-20
AMS 6525 · AMS 6523 · AMS 6468
HP 9-4-25
AMS 6546
HP 9-4-30
AMS 6526 · AMS 6524
HS-220
AMS 6407
HY-180
AMS 6465
Hy-Tuf
AMS 6418
K11625
AMS 6386
M-50
AMS 6490 · AMS 6491
Mar300
AMS 6463
Maraging 200
ASTM A538 UNS K92810
Maraging 250
AMS 6512 · AMS 6520 · AMS 6501
Maraging 300
AMS 6514 · AMS 6521
Maraging 350
AMS 6515
NAX 9115-AC
AMS 6354 · AMS 6460
Pyrowear, Alloy 53
AMS 6308
SAE 3310
AMS 6250
SAE 4130
AMS 6346
SAE 9317
AMS 6264
Type 502
AMS 6466 · AMS 6467
X200
AMS 6406