GB/T 470-2008 in English

《GB/T 470-2008锌锭》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
本标准代替ＧＢ／Ｔ４７０―１９９７《锌锭》。本标准规定了锌锭的要求、试验方法、检验规则及标志、包装、运输和贮存。本标准适用于以锌精矿和含锌物料为原料，用蒸馏法、精馏法或电解法生产的锌锭。主要供镀锌、合金、化工、电气等工业部门使用。与ＧＢ／Ｔ４７０―１９９７相比，本标准主要变化如下：
―――取消了对砷、锑的要求。
―――Ｚｎ９９．９９５、Ｚｎ９９．９９和Ｚｎ９９．９５的铝含量分别修改为不大于０．００１％、０．００２％和０．０１％，并纳入化学成分表。
―――Ｚｎ９８．７修改为Ｚｎ９８．５。
―――Ｚｎ９９．９５、Ｚｎ９９．５、Ｚｎ９８．５的铅、镉、铁、铜、锡、铝含量分别作了适当的修改。
―――增加了生产取样的方法。

1 Scope

This standard specifies the requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of zinc ingots.
This standard is applicable to the zinc ingots that are produced from zinc concentrate and zinc-containing material by distillation method, rectifying method or electrolytic method. It is mainly used for industrial sectors such as galvanization, alloy, chemical and electricity.

2 Normative References

The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigenda), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document applies.
GB/T 1250 Rules for Expression and Judgment of Limiting Values
GB/T 8170 Rules for Rounding off of Numerical Values
GB/T 12689 (All Parts) The Method for Chemical Analysis of Zinc and Zinc Alloys

Foreword I
1 Scope
2 Normative References
3 Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Packaging, Transportation and Storage
7 Order (or Contract)
Appendix A (Informative) Comparison of Chapter and Article Numbers between This Standard and ISO 752: 2004