1.1 本规范涵盖焊料金属合金（通常称为软焊料），包括锌铝、锌铝铜、锌锡、锌锡铜、锌镉锡、锌镉、锡锌、镉锌、镉锌银和镉银，用作焊料，用于在低于熔点的温度下将两种或两种以上金属连接在一起。 1.1.1 本标准中规定的某些合金也用作电子工业中的热喷涂线，本规范对此进行了说明 B943 . 规格 B833 覆盖主要用于钢防腐的热喷涂（金属化）用锌和锌合金线（如中所述 附件A1 本规范）。 1.1.2 本规范包括锡基合金，因为其在电子工业中的用途不同于规范中规定的锡和铅焊料成分的主要用途 B32 . 1.1.3 这些焊料包括标称液相线温度不超过850°F（455°C）的合金。 1.1.4 本规范包括固体棒、锭、丝、粉末和特殊形式的焊料，以及锡膏形式的焊料。 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 毒性- 警告- 可溶性和可吸入形式的镉在某些形式和浓度下可能对人类健康和环境有害。因此，应根据美国职业安全与健康管理局（OSHA）的适当规定控制镉的摄入和吸入。镉- 含有合金和涂层的物品不得用于接触食品或饮料的物品，或用于通常插入口腔的牙科和其他设备。同样，如果使用含镉合金或涂层的物品在制造过程中进行焊接、钎焊、钎焊、研磨、火焰切割或以其他方式加热，则必须提供足够的通风，以将职业镉暴露保持在OSHA允许暴露水平（PEL）以下。 1.4 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、健康和环境实践，并在使用前确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers solder metal alloys (commonly known as soft solders), including zinc-aluminum, zinc-aluminum-copper, zinc-tin, zinc-tin-copper, zinc-cadmium-tin, zinc-cadmium, tin-zinc, cadmium-zinc, cadmium-zinc-silver, and cadmium-silver, used as solders for the purpose of joining together two or more metals at temperatures below their melting points. 1.1.1 Certain alloys specified in this standard are also used as Thermal Spray Wire in the electronics industry and are covered for this purpose in Specification B943 . Specification B833 covers Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) used primarily for the corrosion protection of steel (as noted in Annex A1 of this specification). 1.1.2 Tin base alloys are included in this specification because their use in the electronics industry is different than the major use of the tin and lead solder compositions specified in Specification B32 . 1.1.3 These solders include alloys having a nominal liquidus temperature not exceeding 850°F (455°C). 1.1.4 This specification includes solder in the form of solid bars, ingots, wire, powder and special forms, and in the form of solder paste. 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 Toxicity— Warning— Soluble and respirable forms of cadmium may be harmful to human health and the environment in certain forms and concentrations. Therefore, ingestion and inhalation of cadmium should be controlled under the appropriate regulations of the U.S. Occupational Safety and Health Administration (OSHA). Cadmium-containing alloys and coatings should not be used on articles that will contact food or beverages, or for dental and other equipment that is normally inserted in the mouth. Similarly, if articles using cadmium-containing alloys or coatings are welded, soldered, brazed, ground, flame-cut, or otherwise heated during fabrication, adequate ventilation must be provided to maintain occupational cadmium exposure below the OSHA Permissible Exposure Level (PEL). 1.4 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, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.