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Steel Bars, Forgings, and Tubing 1.7Cr - 3.8Ni - 0.3Mo (0.32 - 0.38C) Aircraft-Quality
AMS6539A
Steel, Bars, and Forgings 0.50Cr - 0.55Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740) Heat Treated, 105 ksi (724 MPa) Tensile Strength
AMS6325L
Steel, Nitriding, Bars, Forgings and Tubing 1.6Cr - 0.35Mo - 1.13Al (0.38 - 0.43C) (135 Mod)
AMS6470P
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