ASTM B 520 – 93 International standard

Standard Specification for Tin-Coated, Copper-Clad Steel Wire for Electronic Application1

This wellknown is issued under the fixed designation b 520; the wide variety immediately following the designation shows the year of original adoption or, inside the case of revision, the yr of ultimate revision. A variety of in parentheses suggests the year of remaining reapproval. A superscript epsilon (e) indicates an article exchange because the ultimate revision or reapproval.

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You can also get  ASTM B 517 – 03 International standard

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