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TIMETAL® 21S Titanium Alloy (Ti-15Mo-3Nb-3Al-0.2Si, ASTM Grade 21); Annealed Strip/Sheet

 

Subcategory: Titanium Alloy; Nonferrous Metal; Beta Titanium Alloy

Key Words: Beta 21S; UNS R58210

Material Notes:
Titanium content above is calculated as the remainder and may not reflect the actual range.

High-Strength, Oxidation Resistant Strip Alloy

Features: Offers the good cold formability and weldability of a beta strip alloy, but with greatly improved oxidation resistance and creep strength. Aerospace applications include engine exhaust plug and nozzle assemblies. The alloy's resistance to aircraft hydraulic fluids, such as Skydrol, is excellent at all temperatures. It is well suited for metal matrix composites because it can be economically rolled to foil, is compatible with most fibers, and is sufficiently stable up to 816°C.

Typical heat treatment for this alloy: Solution treatment: 816-843°C for 3-30 min, air cool. Age treatment: 510-679°C for 8-16 hrs.

Data provided by TIMET.

Available Properties
  • Density
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield
  • Elongation at Break
  • Modulus of Elasticity
  • Bend Radius, Minimum
  • Electrical Resistivity
  • CTE, linear 20°C
  • CTE, linear 250°C
  • CTE, linear 500°C
  • Specific Heat Capacity
  • Thermal Conductivity
  • Maximum Service Temperature, Air
  • Beta Transus
   
Property Data

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