Original Title: Performance and Application of TC4ELI High-precision Medical Gr23 Titanium Rod GR23 titanium rod corresponds to domestic grade GR5 (ELI) TC4ELI Titanium rods specially designed for surgical implants and medical devices Specification of Gr23 titanium rod: φ4-120mm Tolerance: 0.03 MM Chemical composition of GR23: N≤0.03 C≤0.08 H≤0.0125 Fe≤0.25 O≤0.13...