Home / Standards / GB/T 24522-2020 GB/T 24522-2020 Active Metallic materials—Method of test for the determination of resistance to stable crack extension using specimens of low constraint 金属材料 低拘束试样测定稳态裂纹扩展阻力的试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 现行 Issue Date 2020-06-02 Implementation 2021-01-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A