Steel Bars, Forgings, and Tubing 4.0Cr - 4.2Mo - 1.0V (0.77 - 0.85C) (M-50) Premium Aircraft-Quality for Bearing Applications Consumable Electrode Vacuum Melted AMS6490J

DOI: https://doi.org/10.4271/AMS6490J

Issuing Committee: AMS E Carbon and Low Alloy Steels Committee

Publisher: SAE International

Pages: 9

Rationale: AMS6490J results from a Five-Year Review and update of this specification that revises composition analytical methods (3.1), adds tubing macroetch allowance (3.4.1.1), revises decarburization testing (3.4.5) and quality (3.5.2), prohibits unauthorized exceptions (3.7), and revises reporting (4.5) and identification (5.2.1).