Home / Standards / GB/T 38971-2020 GB/T 38971-2020 Active Spherical Co-Cr alloy powder for additive manufacturing 增材制造用球形钴铬合金粉 Standard Type GBT ICS 77.160;25.030 CCS H71 Status 现行 Issue Date 2020-07-21 Implementation 2021-06-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A