JIS Z 2251:1998被替代
Knoop hardness test - Test method
出版：Japanese Standards Association
专家解读视频
基本信息
标准编号： JIS Z 2251:1998
标准类别：Standard
出版单位：Japanese Standards Association
标准页数：6
标准简介
This Japanese Industrial Standard specifies the method of Knoop hardness test mainly for metallic materials by the test force covering the range of 98.07 mN up to and including 9.807 N.
替代本标准的新标准
等同采用的国际标准
ISO 4545:1993 - Identical
