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See Chinese contents: GB/T 39989-2021 GB/T 39989-2021: Superelastic titanium-nickel shape memory alloy bar and wire
This document specifies the technical requirements, test methods, inspection rules, marking, packing, transporting, storing, accompanying documents and order form content for superelastic titanium-nickel shape memory alloy bar and wire. This document is applicable to round and rectangular superelastic titaniumnickel shape memory alloy bar and wire used for making spectacle frames, orthopedic wires, guide wires, communication antennas, and for construction industry and power industry, etc.
