Titanium bar Material:titanium Gr1,Gr2,Gr3,Gr5 Standard:ASTM B348 Certification: ... ,Gr4,Gr5,Gr7,Gr9,Gr11,Gr12Standard:GB/T2965-98,ASTM B 348-83,ASTM F136-95,AMS4928,ASTM F67Specification:Dia:8 ... receiving your inquiry.Glad to give you more details. titanium bar(ASTM B348)