Home / Standards / GB/T 1817-2017 GB/T 1817-2017 Active Test method for 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 77.160 CCS H16 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A