1.1 本指南适用于直接或间接用于氧气或富氧流体服务的金属材料，定义见第节 3. . 它主要与金属材料的特性有关，与金属材料对点火和燃烧传播的相对敏感性有关。它不涉及机械性能、潜在毒性、放气、系统中各种材料之间的反应、功能可靠性或性能特征，如颗粒的老化、碎裂或脱落，除非这些可能导致点火。 1.2 本文件仅适用于金属；非金属包含在指南中 G63 . 注1: 美国材料与试验协会对与本指南中提及的任何项目有关的任何评估方法的有效性不持任何立场。 明确建议本指南的用户，确定任何此类评估方法和数据的有效性以及使用此类评估方法和数据的风险完全由他们自己负责。 注2: 在评估材料时，应从危险的角度评估在高于大气压力下氧气浓度超过大气浓度的任何混合物，以确保材料燃烧性可能显著增加。 1.3 单位- 以国际单位制表示的数值应视为标准。 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在使用前制定适当的安全、健康和环境实践，并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。 ====意义和用途====== 4.1 本指南的目的是为合格的技术人员提供选择氧气用金属的相关信息，以最大限度地降低点火概率和爆炸或火灾风险。它用于选择与氧气的生产、储存、运输、分销或使用相关的应用材料。 本规范不作为批准氧气服务材料的规范。

1.1 This guide applies to metallic materials under consideration for oxygen or oxygen-enriched fluid service, direct or indirect, as defined in Section 3 . It is concerned primarily with the properties of a metallic material associated with its relative susceptibility to ignition and propagation of combustion. It does not involve mechanical properties, potential toxicity, outgassing, reactions between various materials in the system, functional reliability, or performance characteristics such as aging, shredding, or sloughing of particles, except when these might contribute to an ignition. 1.2 This document applies only to metals; nonmetals are covered in Guide G63 . Note 1: The American Society for Testing and Materials takes no position respecting the validity of any evaluation methods asserted in connection with any item mentioned in this guide. Users of this guide are expressly advised that determination of the validity of any such evaluation methods and data and the risk of use of such evaluation methods and data are entirely their own responsibility. Note 2: In evaluating materials, any mixture with oxygen exceeding atmospheric concentration at pressures higher than atmospheric should be evaluated from the hazard point of view for possible significant increase in material combustibility. 1.3 Units— The values stated in SI units are to be regarded as the standard. 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 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. ====== Significance And Use ====== 4.1 The purpose of this guide is to furnish qualified technical personnel with pertinent information for use in selecting metals for oxygen service in order to minimize the probability of ignition and the risk of explosion or fire. It is intended for use in selecting materials for applications in connection with the production, storage, transportation, distribution, or use of oxygen. It is not intended as a specification for approving materials for oxygen service.