Where the world gathers for
plating, anodizing, & finishing Q&As since 1989

-----

ASTM A764 Coating Weight Measurement

2003

We currently specified to a spring manufacturer a wire size as follows:

Hard Drawn Steel Wire, ASTM A764 [affil. link] Class 1, Type B, Finish 1, Tensile Class 1, coating applied by Electrolytic Process.

The minimum coating for .072 dia. wire is 46gm/m2

The mill certification states that it meets the minimum but when tested it fails and is tested at 28.99gm/m2.

The mill representative states this is tested prior to draw which will cause the coating weight to change. How should this be tested? Is ASTM A764 [affil. link] specific as to how and when?

Help!

Jim Marventano
- Rochester, New York

finishing.com is made possible by ...
this text gets replaced with bannerText

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: