Steel Maraging AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape AMS 6519 Maraging Steel - AMS 6519 Bar Maraging Steel - - Bar AMS 6519 Forging Maraging Steel - - Forging AMS 6519 Ring Maraging Steel - - Ring AMS 6519 Tubing Maraging Steel - - Tubing