Home / Standards / GB/T 21838.2-2008 GB/T 21838.2-2008 Abolished Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines 金属材料 硬度和材料参数的仪器化压痕试验 第2部分: 试验机的检验和校准 Standard Type GBT ICS 77.040.10;19.060 CCS N71 Status 废止 Issue Date 2008-06-20 Implementation 2009-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A