| 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 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 AS1182 | Standard Stock Removal Allowance, Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing |  | 
              
              
                | 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 AMS6481 | Steel Bars, Forgings, Mechanical Tubing, and Forging Stock Nitriding 3Cr - 1Mo - 0.2V - (0.29 - 0.36C) Premium Aircraft-Quality for Bearing Applications Double Vacuum Melted |  | 
              
              
                | 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 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 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 AMS6448 | Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock, Aircraft Quality, 0.95Cr - 0.22V (0.48 - 0.53C) (6150) |  | 
              
              
                | 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 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 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 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 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 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 AMS6444 | Steel, Bars, Forgings, and Tubing, 1.45Cr (0.93 - 1.05C) (SAE 52100), Premium Aircraft-Quality, Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6299 | Steel Bars, Forgings, and Mechanical Tubing and Forging Stock, Carburizing, Aircraft Quality, 0.50Cr - 1.8Ni - 0.25Mo - (0.17 - 0.23C), (SAE 4320H) |  | 
              
              
                | SAE | SAE AMS6551 | Steel Bars, Forgings and Tubing, 1.75Cr - 4.0Ni - 0.5Mo - (0.35 - 0.40C), Premium Aircraft Quality, Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6267 | Steel Bars, Forgings, and Mechanical Tubing and Forging Stock 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Electroslag Remelted or Consumable Electrode Vacuum Remelted |  | 
              
              
                | SAE | SAE AMS6265 | Steel, Bars, Forgings, Mechanical Tubing and Forging Stock, 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310), Vacuum Consumable Electrode Remelted |  | 
              
              
                | SAE | SAE AMS6414 | Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock, 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340), Vacuum Consumable Electrode Remelted |  | 
              
              
                | SAE | SAE AMS6411 | Steel Bars, Forgings, Mechanical Tubing and Forging Stock, 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod), Consumable Electrode Remelted |  | 
              
              
                | SAE | SAE AMS6431 | Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock 1.05Cr - 0.55Ni - 1.0Mo - 0.11V (0.45 - 0.50C) (D6AC) Vacuum Consumable Electrode Remelted |  | 
              
              
                | SAE | SAE AMS6499 | Steel, Bars, Forgings, Mechanical Tubing and Forging Stock, 2.7Si - 0.85Cr - 1.8Ni - 0.4Mo - 0.2V - (0.37 - 0.44C) Premium Aircraft Quality, Double Vacuum Melted |  | 
              
              
                | SAE | SAE AMS6257 | Steel Bars, Forgings, Forging Stock, and Mechanical Tubing, 1.6Si - 0.82Cr - 1.8Ni - 0.40Mo - 0.08V (0.40 - 0.44C), Consumable Electrode Vacuum Remelted, Normalized and Tempered_x000D_ |  |