1.1 本试验方法 2. 涵盖通过火花原子发射光谱法对奥氏体不锈钢进行的下列元素分析，范围如下: 要素 组成范围， % 铬 17   至23.0 镍 7.5   至13.0 钼 0.01  至3.0 锰 0.01  至2.0 硅 0.01  至0.90 铜 0.01  至0.30 碳 0.005至0.25 磷 0.003至0.15 硫黄 0.003至0.065 1.2 本试验方法设计用于分析冷铸圆盘或对具有至少13mm（0。 5英寸）直径。样品必须足够大，以防止放电过程中过热，并具有与参考材料相似的冶金条件和成分。 1.3 一种或多种参考材料必须与试样的成分非常接近。分析具有未知量的参考材料并执行所指示的数学校正（通常称为类型标准化）的技术也可用于校正干扰效应并补偿由仪器漂移引起的误差。 通常使用各种这样的系统。任何能够达到与本试验方法报告的分析精度相当的分析精度的方法都是可接受的。 1.4 本标准并不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建立适当的安全、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====== 5.1 必须准确确定不锈钢的化学成分，以确保所需的冶金性能。本试验方法适用于制造控制和检验试验。

1.1 This test method 2 covers the analysis of austenitic stainless steel by spark atomic emission spectrometry for the following elements in the ranges shown Element Composition Range, % Chromium 17.0   to 23.0 Nickel 7.5   to 13.0 Molybdenum 0.01  to 3.0 Manganese 0.01  to 2.0 Silicon 0.01  to 0.90 Copper 0.01  to 0.30 Carbon 0.005 to 0.25 Phosphorus 0.003 to 0.15 Sulfur 0.003 to 0.065 1.2 This test method is designed for the analysis of chill-cast disks or inspection testing of stainless steel samples that have a flat surface of at least 13 mm (0.5 in.) in diameter. The samples must be sufficiently massive to prevent overheating during the discharge and of a similar metallurgical condition and composition as the reference materials. 1.3 One or more of the reference materials must closely approximate the composition of the specimen. The technique of analyzing reference materials with unknowns and performing the indicated mathematical corrections (typically referred to as type standardization) may also be used to correct for interference effects and to compensate for errors resulting from instrument drift. A variety of such systems are commonly used. Any of these that will achieve analytical accuracy equivalent to that reported for this test method are acceptable. 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 ====== 5.1 The chemical composition of stainless steels must be determined accurately to ensure the desired metallurgical properties. This test method is suitable for manufacturing control and inspection testing.