1.1 本规范涵盖用于热浸镀锌的锌中间合金，用于调节熔融锌槽中某些合金元素的浓度。 表1 介绍了这些材料的化学成分，包括六种锌铝中间合金（光亮剂）和一种锌锑中间合金。 ASTM标准 常见的 UNS公司 A-1型 90/10锌/铝 高纯度 Z30750 A-2型 90/10锌/铝 纯度低 Z31710 A-3型 95/5  锌/铝 高纯度 Z30503 A-4型 95/5  锌/铝 纯度低 Z31510 A-5型 96/4  锌/铝 高纯度 Z31520 A-6型 96/4  锌/铝 纯度低 Z30504 S-1型 90/10锌/锑 Z55710 （A） 以下内容适用于本表中的所有规定限值:为了确定是否符合本规范，应根据惯例的四舍五入方法，将从分析中获得的观察值四舍五入到用于表示极限值的数字右最后一位的最近单位 E29年 . （B） UNS编号符合实践 E527 . （C） 正在开发化学方法。 （D） 仅供参考。不需要对该元素进行定量测定。假设锌为100之间的差值 % 以及上面列出的这些元素的总和。 注1: 规范中的母合金 B860 主要用于热浸镀锌，以调节熔融锌槽中某些元素的浓度，与规范中的锌铝合金不同 B997 主要用于熔融锌- 铝 1.2 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任熟悉所有危险，包括制造商提供的本产品/材料的适当安全数据表（SDS）中确定的危险，建立适当的安全和健康实践，并在使用前确定监管限制的适用性。

1.1 This specification covers zinc master alloys which are used in hot dip galvanizing for the purpose of adjusting the concentration of certain alloying elements in the molten zinc bath. Table 1 covers the chemical composition of these materials which include six master alloys of zinc-aluminum (brightener) and one master alloy of zinc-antimony. ASTM Common UNS Type A-1 90/10 Zn/Al High Purity Z30750 Type A-2 90/10 Zn/Al Low Purity Z31710 Type A-3 95/5  Zn/Al High Purity Z30503 Type A-4 95/5  Zn/Al Low Purity Z31510 Type A-5 96/4  Zn/Al High Purity Z31520 Type A-6 96/4  Zn/Al Low Purity Z30504 Type S-1 90/10 Zn/Sb Z55710 (A) The following applies to all specified limits in this table: For purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded off to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E29 . (B) UNS numbers in conformance with Practice E527 . (C) Chemical method under development. (D) For information only. Quantitative determination of this element is not required. Zinc is assumed to be the difference between 100 % and the sum of those elements listed above. Note 1: The master alloys in Specification B860 are intended to be used primarily in hot-dip galvanizing to adjust the concentration of certain elements in a molten zinc bath, and differ from the zinc-aluminum alloys in Specification B997 which are intended to be used primarily in molten zinc-aluminum. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.