Home / Standards / GB/T 37900-2019 GB/T 37900-2019 Active Test method of hardness and fracture toughness for ultra-thin glass—Low-load vickers hardness indentation method 超薄玻璃硬度和断裂韧性试验方法 小负荷维氏硬度压痕法 Standard Type GBT ICS 81.040.10 CCS Q30 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A