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ASTM A561-2008 工具钢棒的宏观刻蚀试验标准实施规程

ASTM A561-2008 工具钢棒的宏观刻蚀试验标准实施规程

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资料描述

【英文标准名称】: Standard Practice for Macroetch Testing of Tool Steel Bars
【原文标准名称】: 工具钢棒的宏观刻蚀试验标准实施规程
【标准号】: ASTM A561-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: A01.29
【标准类型】: (Practice)
【标准水平】: ()
【中文主题词】:
【英文主题词】: ingot structure; macroetch; macrostructure; porosity; segregation; Macroetching; Tool steel bars
【摘要】: 1.1 This practice for macroetch testing has been found to be a useful and reliable method for evaluating the quality of tool steel bars. It is used as a quality control and inspection test to reveal by deep acid etching the macrostructure in specimens cut from bars and to show the presence of such conditions as pipe, cracks, porosity, segregation, or foreign material. The etched surface is generally examined visually, but magnification up to about 10x00D7; is occasionally employed. 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.
【中国标准分类号】: H23
【国际标准分类号】: 77_140_60
【页数】: 3P.;A4
【正文语种】: 英语

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