Alloy Steel

Aerospace & Ultra-High-Strength Steels (Extreme Strength & Toughness)

• 4130 – AMS 6348, AMS 6370, AMS 6528, AMS 6371, AMS 6360, AMS 6373

• 4140 – AMS 6349, AMS 6379, AMS 6382, AMS 6452, AMS 6381, AMS 6395

• 4142 H MOD – AMS 6378

• 4320 – AMS 6299

• 4330 MOD – AMS 6311, AMS 6427

• 4335 MOD – AMS 6426, AMS 6429, AMS 6430, AMS 6433, AMS 6434, AMS 6435, AMS 6428

• 4337 – AMS 6412, AMS 6413

• 4340 – AMS 6409, AMS 6414, AMS 6415, AMS 6359, AMS 6454

• 4617 – AMS 6292

• 4620 – AMS 6294

• 4640 – AMS 6312, AMS 6317

• 6150 – AMS 6448, AMS 6450

• 8615 – AMS 6270

• 8620 – AMS 6274, AMS 6276, AMS 6277

• 8630 – AMS 6280, AMS 6281, AMS 6530, AMS 6550

• 8735 – AMS 6320, AMS 6282, AMS 6535

• 8740 – AMS 6358, AMS 6322, AMS 6324, AMS 6325, AMS 6327, AMS 6323

• 8750 – AMS 6328H

• 9310 – AMS 6265, AMS 6260, AMS 6267

General-Purpose & Structural Alloy Steels (Versatile, Strong & Widely Used)

• 300M – AMS 6417, AMS 6419

• D6AC® – AMS 6431, AMS 6438, AMS 6439

• H-11® – AMS 6485, AMS 6487, AMS 6488

• HY-TUF® – AMS 6418

• AERMET® 100 – AMS 6532

• HP 9-4-20® – AMS 6523, AMS 6524

• HP 9-4-25® – AMS 6546

• 17-22® – AMS 6302, AMS 6303, AMS 6304, AMS 6305

• 17-22A® – AMS 6385, AMS 6436

• Maraging 250 – AMS 6512

• Maraging 300 – AMS 6414

Bearing & Tool Steels (Wear Resistance & High Hardness)

• 52100 – AMS 6440, AMS 6444, AMS 6447

• M50 – AMS 6490, AMS 6491