ASTM B 6 - 06 Standard Specification for Zinc

American Society for Testing and Materials (ASTM). Current edition approved Dec. 1, 2006. Published January 2007. Originally approved in 1911. Last previous edition approved in 2003 as B 6 – 03. 4 p. This specification covers zinc metal made from ore or other material by a process of distillation or by electrolysis in five grades as follows:
1 LME Grade
2 Special High Grade
3 High Grade
4 Intermediate Grade
5 Prime Western Grade