AMS4907M results from a Five-Year Review and update of this specification that revises yttrium requirement (Table 1), updates unauthorized exceptions (188.8.131.52, 3.9, 8.6), and allows for lower temperature for notched/unnotched tensile ratio determination (3.5.3).
Corrosion resistant alloys
Heat resistant alloys
Coatings, colorants, and finishes
Also known as: SAE AMS 4907
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