| SAE | SAE AMS5654 | Steel, Corrosion and Heat Resistant, Bars, Wire, Forgings, Mechanical Tubing, Rings, and Forging Stock, 18Cr - 11Ni - 0.60Cb (Nb) (347), Premium Aircraft Quality, Consumable Electrode Melted, Solution Heat Treated |  | 
              
              
                | SAE | SAE AMS6495 | Steel Bars, Forgings, Mechanical Tubing, and Forging Stock, 1.0Cr - 2.50Ni - 2.0Mo - 1.10Si (0.10 - 0.20C), Premium Aircraft-Quality, Electroslag Remelted or Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6525 | Steel, Bars, Forgings, Mechanical Tubing, Rings, and Stock for Forgings and Rings, 0.75Cr - 9.0Ni - 4.5Co - 1.0Mo - 0.09V (0.17 - 0.23C), Consumable Electrode Vacuum Melted, Annealed |  | 
              
              
                | SAE | SAE AMS6515 | Steel, Maraging, Bars, Forgings, Mechanical Tubing, Rings, and Stock for Forgings and Rings, 18.5Ni - 12.0Co - 4.9Mo - 1.40Ti - 0.10Al, Premium Aircraft Quality, Double Vacuum Melted, Annealed (Maraging 350) |  | 
              
              
                | SAE | SAE AMS6493 | Steel Bars, Forgings, and Tubing, 1.0Cr - 3.25Ni - 0.40Mo (0.17 - 0.22C), Electroslag Remelted or Consumable Electrode Vacuum Remelted, Premium Aircraft-Quality |  | 
              
              
                | SAE | SAE AMS6471 | Steel, Nitriding, Bars, Forgings, Mechanical Tubing, and Stock for Forging, 1.6Cr - 0.35Mo - 1.13Al (0.38 - 0.43C) (135 Mod), Premium Aircraft Quality, Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6526 | Steel, Bars, Forgings, Mechanical Tubing, Rings, and Stock for Forgings and Rings, 1.0Cr - 7.5Ni - 4.5Co - 1.0Mo - 0.09V (0.29 - 0.34C), Consumable Electrode Vacuum Remelted, Annealed |  | 
              
              
                | SAE | SAE AMS5611 | Steel, Corrosion and Heat-Resistant, Bars, Wire, Forgings, Forging and Ring Stock, Mechanical Tubing, and Rings 12Cr _x000D_
Ferrite Controlled, Annealed, Consumable Electrode Melted |  | 
              
              
                | SAE | SAE AS1182 | Standard Stock Removal Allowance, Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing |  | 
              
              
                | SAE | SAE AMS6340 | Steel Bars, Forgings, Mechanical Tubing and Forging Stock 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod) Premium Aircraft Quality, Consumable Electrode Vacuum Remelted_x000D_ |  | 
              
              
                | SAE | SAE AMS6429 | Steel Bars, Forgings, Mechanical Tubing, Rings and Stock for Forgings and Rings, 0.78Cr - 1.8Ni - 0.35Mo - 0.20V (0.33 - 0.38C) (4335 Mod) Premium Aircraft Quality Consumable Electrode Vacuum Remelted_x000D_ |  | 
              
              
                | SAE | SAE AMS6428 | Steel, Bars, Forgings, Mechanical Tubing and Forging Stock, Aircraft Quality, 0.78Cr - 1.8Ni - 0.35Mo - 0.20V (0.32 - 0.38C) (4335 Mod) |  | 
              
              
                | SAE | SAE AMS6427 | Steel Bars, Forgings, Mechanical Tubing, and Forging Stock, Aircraft Quality, 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod) |  | 
              
              
                | SAE | SAE AMS6548 | Steel Bars, Forgings, and Tubing, 1.0Cr - 3.2Ni - 0.2Mo (0.12 - 0.17C), Premium Aircraft-Quality, Electroslag Remelted or Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6497 | Steel Bars, Forgings, and Tubing, Nitriding, 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C), Electroslag Remelted or Consumable Electrode Vacuum Remelted, Premium Aircraft-Quality for Bearing Applications |  | 
              
              
                | SAE | SAE AMS6448 | Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock, Aircraft Quality, 0.95Cr - 0.22V (0.48 - 0.53C) (6150) |  | 
              
              
                | SAE | SAE AMS5773 | Steel, Corrosion-Resistant, Bars, Wire, Forgings, Mechanical Tubing, Rings, and Stock for Forgings or Rings, 15Cr - 6.5Ni - 0.75Mo - 0.30Cb (Nb) - 1.5Cu Consumable Electrode Remelted, Solution Heat Treated, Precipitation Hardenable |  | 
              
              
                | SAE | SAE AMS6270 | Steel, Bars, Forgings, and Mechanical Tubing and Forging Stock, Aircraft Quality, 0.50Cr - 0.55Ni - 0.20Mo (0.13 - 0.18C) (SAE 8615) |  | 
              
              
                | SAE | SAE AMS6324 | Steel Bars, Forgings, Mechanical Tubing, and Forging Stock, Aircraft-Quality, 0.65Cr - 0.70Ni - 0.25Mo (0.38 - 0.43C) (8740 Modified) |  | 
              
              
                | SAE | SAE AMS6444 | Steel, Bars, Forgings, and Tubing, 1.45Cr (0.93 - 1.05C) (SAE 52100), Premium Aircraft-Quality, Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6519 | Steel, Maraging, Bars, Forgings, Mechanical Tubing, Flash-Welded Rings, and Stock for Forging and Flash-Welded Rings, 19Ni - 3.0Mo - 1.4Ti - 0.10Al (Alloy T250), Premium Aircraft Quality, Double Vacuum Melted, Annealed |  | 
              
              
                | SAE | SAE AMS6512 | Steel, Maraging, Bars, Forgings, Mechanical Tubing, Rings, and Forging Stock, 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al, Consumable Electrode Vacuum Melted, Annealed |  | 
              
              
                | SAE | SAE AMS6514 | Steel, Maraging, Bars, Forgings, Mechanical Tubing, Rings and Forging Stock, 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10Al, Consumable Electrode Vacuum Melted, Annealed |  | 
              
              
                | SAE | SAE AMS5732 | Steel, Corrosion- and Heat-Resistant, Bars, Wire, Forgings, Mechanical Tubing, Rings, and Stock for Forgings, Rings, or Heading, 15Cr - 25.5Ni - 1.2Mo - 2.1Ti - 0.006B - 0.30V (A286), Consumable Electrode Remelted, 1800 °F (982 °C) Solution and Precipitation Heat Treated |  | 
              
              
                | SAE | SAE AMS6511 | Steel, Maraging, Bars, Forgings, Mechanical Tubing, Rings, and Stock for Forging and Rings, 18Ni - 8.5Co - 3.2Mo - 0.20Ti - 0.10Al, Double Vacuum Melted, Annealed |  |