1.1 本规范涵盖镍铬钼铌合金（UNS N06625）、镍铬钼硅合金（UNS N06219）和镍铬钼钨合金（UNS N06650） 2 在所示条件下以热加工和冷加工棒材和棒材的形式 表1 . 1.1.1 UNS N06625产品提供三种不同热处理条件的等级: 1.1.1.1 1级（退火）- 材料通常在高达1100°F（593°C）的工作温度下使用。 1.1.1.2 2级（固溶退火）- 当需要抗蠕变和断裂时，材料通常用于高于1100°F（593°C）的工作温度。 附注1: 根据工作历史和温度，热加工或再退火可能会显著改变性能。 1.1.1.3 3级（固溶退火和冷加工）-材料通常用于需要更高强度的服务。 1.1.2 合金UNS N06219和UNS N06650仅在固溶退火条件下供应。 1.2 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 1.3 以下注意事项仅适用于试验方法部分，章节 12 本说明书: 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任熟悉所有危害，包括制造商提供的本产品/材料的适当安全数据表（SDS）中确定的危害，建立适当的安全、健康和环境实践，并在使用前确定法规限制的适用性。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》中确立的国际公认的标准化原则制定的。

1.1 This specification covers nickel-chromium-molybdenum-niobium alloy (UNS N06625), nickel-chromium-molybdenum-silicon alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650) 2 in the form of both hot-worked and cold-worked rod and bar in the conditions shown in Table 1 . 1.1.1 UNS N06625 products are furnished in three grades of different heat-treated conditions: 1.1.1.1 Grade 1 (Annealed)— Material is normally employed in service temperatures up to 1100 °F (593 °C). 1.1.1.2 Grade 2 (Solution Annealed)— Material is normally employed in service temperatures above 1100 °F (593 °C) when resistance to creep and rupture is required. Note 1: Hot-working or reannealing may change properties significantly, depending on working history and temperatures. 1.1.1.3 Grade 3 (Solution Annealed and Cold Worked)— Material is normally employed in services where higher strengths are needed. 1.1.2 Alloys UNS N06219 and UNS N06650 are supplied in solution annealed condition only. 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 The following precautionary caveat pertains only to the test methods portion, Section 12 , of this specification: 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.