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Letter 31070
What method to verify chrome plating and
phosphating?
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Hi, what is the method for checking the chrome plating on plain
carbon steel (case-hardened)? what is the technique of checking
phosphating on high carbon steel?
Muhammad Asif
Metallurgical Laboratories - Wah Cantt, Punjab, Pakistan
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What are the parts, what spec are you chrome plating to, and what
spec are you phosphatizing to? Unfortunately, it is not possible to
suggest a test method for verifying that a coating complies with the
spec unless you say what spec that is. If no spec has been selected
yet, try to find an appropriate Mil, AMS, ISO, or ASTM specification
covering that process.
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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