ASTM B863 : Standard Specification for Titanium and …
This specification covers titanium and titanium alloy wire as follows: Grade 1—UNS R50250. Unalloyed titanium, Grade 2—UNS R50400. Unalloyed titanium, Grade 2H—UNS R50400. Unalloyed titanium (Grade 2 with 58 ksi (400 MPa) minimum UTS), Grade 3—UNS R50550. Unalloyed titanium,