Home / Standards / GB/T 24523-2020 GB/T 24523-2020 Active Metallic materials—Test method for rapid indentation (Brinell type) hardness testing 金属材料 快速压入(布氏型)硬度试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A