This SAE Aerospace Standard (AS) covers requirements for nickel-chromium coatings@ black oxide or black phosphate coatings@ and alternative coatings for aerospace hand tools. Classification Coatings covered by this document shall be of the following types@ as specified: Type I - Nickel-Chromium Coating Type II - Black Oxide@ Black Phosphate Coating@ or Other Black Finish Coatings Type III - Alternative Coatings
AS4984B-2018由SAE - SAE International 发布于 2018-09-01,并于 2018-09-28 实施。
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