1.1 这些测试方法包括测量粉末冶金（PM）产品从压坯到完全硬化成品的所有制造阶段的表面粗糙度。 1.2 这些测试方法提供了一些常见表面粗糙度参数的定义和示意图( R 一 R 吨 , 和 R z 国际标准化组织 ) 1.3 本标准规定了测量PM零件表面粗糙度的两种不同标准化程序。 1.3.1 方法1使用锥形触针和高斯滤波器。 1.3.2 方法2使用凿子（刀）边缘触针。 1.3.3 每种测试方法都会产生不同的表面粗糙度测量结果，结果无法直接比较。 1.4 以国际单位制表示的值应视为标准值。SI单位后括号中给出的值仅供参考，不视为标准值。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者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。 1.6 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 3.1 粉末冶金零件的表面粗糙度是与其承载、磨损、密封、滑动、粘附、电接触和润滑剂保持财产等因素相关的一个重要特征。 3.2 表面粗糙度也可能对部件组装或系统性能至关重要。尺寸配合和配合表面相互作用可能需要某些表面粗糙度要求，以满足性能规范。

1.1 These test methods cover measuring the surface roughness of powder metallurgy (PM) products at all stages of manufacturing from green compact to fully hardened finished component. 1.2 These test methods provide the definition and schematic of some common surface roughness parameters ( R a , R t , and R z ISO ) 1.3 This standard specifies two different standardized procedures for measuring the surface roughness of PM parts. 1.3.1 Method 1 uses a conical stylus and a Gaussian filter. 1.3.2 Method 2 uses a chisel (knife) edge stylus. 1.3.3 Each test method results in a different measure of surface roughness and the results are not directly comparable. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.5 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. 1.6 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 ====== 3.1 The surface roughness of PM parts is an important characteristic in relation to factors such as their load-bearing, wear, sealing, sliding, adhesion, electrical contact, and lubricant retention properties. 3.2 Surface roughness may also be critical for component assembly or system performance. Dimensional fit and mating surface interaction may require certain surface roughness requirements to meet performance specifications.