ASTM B 449 – 93 International standard

Standard Specification for Chromates on Aluminum1

This trendy is issued underneath the fixed designation b 449; the number straight away following the designation suggests the 12 months of unique adoption or, inside the case of revision, the 12 months of final revision. Various in parentheses indicates the 12 months of last reapproval. A superscript epsilon (e) shows a piece of writing trade because the remaining revision or reapproval.
This fashionable has been accepted to be used with the aid of companies of the branch of protection.

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You can also get ASTM B 447 – 02 International standard

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