Titanium Alloy Grade 4 is "unalloyed" titanium offering   improved
  strength, moderate ductility, and ASME Code design allowables. This
  material is readily weldable and is very corrosion resistant in highly
  oxidizing and mildy reducing environments. The material is castable.

General information:

Common Specifications:

Specification:

Possibilities of Form & Technik Products

ASTM B265

Strip, Sheet, Plate

ASTM B348

Bar and Billet

ASTM B367

Castings

ASTM F67

Unalloyed Titanium for Surgical Implants

AMS 4901

Sheet, Strip, Plate

AMS 4921

Bars, wire, forgings, rings

MIL T-9047 Ti-CP-70

Bars and forgings