Home / Standards / GB/T 39989-2021 GB/T 39989-2021 Active Superelastic titanium-nickel shape memory alloy bar and wire 超弹性钛镍形状记忆合金棒材和丝材 Standard Type GBT ICS 77.150.50 CCS H64 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A