1.1 本规范涵盖精炼银铸棒 2. 表格分为以下三个等级: 1.1.1 99.90级 （UNS P07020） — 银的最低纯度为999.0，通常被称为“商业棒”或“金块” 1.1.2 99.95级 （UNS P07015） — 银的最低纯度为999.5。 1.1.3 99.99级 （UNS P07010） — 最低纯度为999.9的优质葡萄酒。 1.2 以英寸-磅为单位的数值应视为标准值。 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，以建立适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 1.4 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 refined silver cast bar 2 form in three grades as follows: 1.1.1 Grade 99.90 (UNS P07020) — Silver having a minimum fineness of 999.0 commonly referred to as “commercial bar” or “bullion.” 1.1.2 Grade 99.95 (UNS P07015) — Silver having a minimum fineness of 999.5. 1.1.3 Grade 99.99 (UNS P07010) — A premium grade having a minimum fineness of 999.9. 1.2 The values stated in inch-pound units are to be regarded as 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, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 1.4 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.