ASTM B 457 – 67 International standard

Standard Test Method for Measurement of Impedance of Anodic Coatings on Aluminum1

This widespread is issued below the fixed designation b 457; the range straight away following the designation indicates the year of original adoption or, within the case of revision, the 12 months of ultimate revision. A range of in parentheses shows the yr of ultimate reapproval. A superscript epsilon (e) shows a piece of writing alternate since the remaining revision or reapproval.

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