1.1 这些试验方法包括测定有机材料（如干燥油漆、清漆和清漆涂层）在可接受的平面刚性表面（如金属或玻璃）上的压痕硬度。 1.2 包括以下两种方法: 小节 方法A-努氏压痕硬度 6 – 12 方法B-Pfund压痕硬度 13 – 19 1.3 精度较高的方法A提供了努氏硬度值（KHN）的硬度值。方法B以Pfund硬度值（PHN）提供硬度。尽管这些方法的硬度值标度不同，但这些方法在涂层硬度等级上是一致的。 1.4 这些试验方法中的试验方法A的内容与ISO 6441-1和ISO 6441-2相似（但在技术上不等同）。 1.5 以SI单位或英寸表示的值- 磅单位应单独视为标准单位。每个系统中所述的值不一定完全相等；因此，为了确保符合标准，每个系统应独立使用，两个系统的值不得合并。 1.6 本标准无意解决与其使用相关的安全问题（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。 1.7 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====== 4.1 压痕硬度测量已被证明可用于评定刚性基底上涂层的抗机械损伤能力，例如由打击、刨削和刮擦产生的损伤。这些测量值不一定表征变形时保持完整所需涂层的抗机械滥用性能。

1.1 These test methods cover the determination of the indentation hardness of organic materials such as dried paint, varnish, and lacquer coatings, when applied to an acceptable plane rigid surface, for example, metal or glass. 1.2 Two methods are covered as follows: Sections Method A—Knoop Indentation Hardness 6 – 12 Method B—Pfund Indentation Hardness 13 – 19 1.3 Method A, which has the greater precision, provides hardness values in terms of Knoop Hardness Number (KHN). Method B provides hardness in terms of Pfund Hardness Number (PHN). Although the hardness value scales of these methods differ, the methods agree in the ranking of coating hardness. 1.4 Test Method A of these test methods is similar in content (but not technically equivalent) to ISO 6441-1 and ISO 6441-2. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.6 This standard does not purport to address 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. 1.7 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 Indentation hardness measurements have proven to be useful in rating coatings on rigid substrates for their resistance to mechanical abuse, such as that produced by blows, gouging, and scratching. These measurements do not necessarily characterize the resistance to mechanical abuse of coatings that are required to remain intact when deformed.