Home / Standards / GB/T 39816-2021 GB/T 39816-2021 Active Master alloy electrode for titanium and titanium alloy casting 钛及钛合金铸造母合金电极 Standard Type GBT ICS 77.150.50 CCS H64 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A