ASTM B863 Pure Titanium Wire

ASTM B863 Pure Titanium wire consist entirely of α-phase. They contain aluminum (Al) as the major alloying element, stabilizing α-phase.

Titanium near α-alloys contains a small amount of ductile β-phase. Besides α-phase stabilizer (aluminum), Near α-Alloys are alloyed by 1-2% of β-phase stabilizers (molybdenum, silicon).

Alloying elements in ASTM B863 Pure Titanium wire and Near α-alloys provide also solution strengthening.

Aluminum is the most effective strengthener of the alloys.

ASTM B863 Pure Titanium wire and Near α-Alloys have good Fracture Toughness and creep resistance combined with moderate mechanical strength, which is retained at increased temperatures up to 1100 ºF (600ºC).

The alloys are easily welded, but their workability in hot state is poor.

Due to the presence of β-phase in Near α-Alloys they may be heat-treated and are forged in hot state.

ASTM B863 Pure Titanium wire and Near α-Alloys are used for manufacturing steam turbine blades, autoclaves and other process equipment vessels operating up to 900 ºF (480ºC), high pressure cryogenic vessels, aircraft engine compressor blades, missile fuel tanks and structural parts, operating for short times up to 1100 ºF (600ºC), airframe and jet-engine parts, welded stator assemblies and hollow compressor blades.

Chemical compositions of some titanium alpha and near-alpha alloys

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