ASTM B633, “Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel,” has been updated to the new 2011 Edition. This is one of Document Center’s best selling ASTM standards and is an essential Zinc Plating specification. This specification covers requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion.
The coatings covered are to be provided in four standard thickness classes in the as-plated condition or with one of three types of supplementary finishes. The surfaces of the articles can under go pre-plating basis metal cleaning, pre- and post-coating treatment for reducing the risk of hydrogen embrittlement, and reactivation and supplementary treatments.
Coatings should be sampled, prepared, tested and conform accordingly to specified requirements as to appearance (luster and workmanship), thickness, adhesion, corrosion resistance, and hydrogen embrittlement.
ASTM B633 replaced the now-obsolete QQ-Z-325, the federal specification for Electrodeposited Zinc Coating. It does not cover electrodeposited zinc-coated steel wire or sheets (originally ASTM A591/A591M covered sheets, but it was replaced in 2005 with ASTM A879/A879M).
This new ASTM specification, all current ASTM standards, and many of the obsolete revisions not available at ASTM are all on our Document Center website, www.document-center.com. Feel free to contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com) should you prefer.