Home / Standards / GB/T 1817-1995 GB/T 1817-1995 Abolished Test method of impact toughness of cemented carbides at room temperature 硬质合金常温冲击韧性试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 废止 Issue Date 1995-04-18 Implementation 1995-12-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A