标准编号：ISO 4545-2:2005
中文名称：金属材料 努氏硬度试验-第2部分： 试验机械检验和校准
英文名称：Metallic materials — Knoop hardness test — Part 2: Verification and calibration of testing machines
发布日期：2005-11
标准范围
This part of ISO 4545 specifies the method of verification of testing machines for determining Knoop hardness for metallic materials in accordance with ISO 4545-1-1. It covers test forces from 0,098 07 N to 19,614 N. The method is recommended only for indentations with diagonals ≥ 0,020 mm.It specifies a direct verification method for checking the main functions of the machine, and an indirect verification method suitable for the overall checking of the machine. The indirect verification method may be used on its own for periodic routine checking of the machine in service.If a testing machine is also to be used for other methods of hardness testing, it should be verified independently for each method.
立即下载标准文件