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Ensinger PEI
TIMET TIMETAL® 21S Titanium Alloy (Ti-15Mo-3Nb-3Al-0.2Si, ASTM Grade 21); ST 1550°F (843°C) - 1650°F (900°C) + Age 1100°F (593°C)
Categories: Metal; Nonferrous Metal; Titanium Alloy; Beta Titanium Alloy

Material Notes: Mechanical property data for strip and sheet solution treated 1550°F (843°C) - 1650°F (900°C) then air-cooled, then aged 1100°F (593°C) for 8 hours.

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 (1500° - 1550°F) for 3-30 min, air cool. Age treatment: 510-679°C (950° - 1275°F) for 8-16 hrs.

Data provided by TIMET.

Key Words: Beta 21S; UNS R58210
Vendors:
Available Properties
  • Density, Typical
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield
  • Elongation at Break
  • Modulus of Elasticity, Aged 1000°F (538C) for 8 hours
  • Electrical Resistivity, Aged 1000°F (538°C)
  • Electrical Resistivity, Aged 1000°F (538°C)
  • Electrical Resistivity, Aged 1000°F (538°C)
  • Electrical Resistivity, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • CTE, linear, Aged 1000°F (538°C)
  • Specific Heat Capacity, Aged 1000°F (538°C)
  • Specific Heat Capacity, Aged 1000°F (538°C)
  • Specific Heat Capacity, Aged 1000°F (538°C)
  • Specific Heat Capacity, Aged 1000°F (538°C)
  • Thermal Conductivity, Aged 1000°F (538°C)
  • Thermal Conductivity, Aged 1000°F (538°C)
  • Thermal Conductivity, Aged 1000°F (538°C)
  • Thermal Conductivity, Aged 1000°F (538°C)
  • Maximum Service Temperature, Air, Structural Applications
  • Beta Transus
  • Aluminum, Al
  • Carbon, C
  • Hydrogen, H
  • Iron, Fe
  • Molybdenum, Mo
  • Niobium, Nb (Columbium, Cb)
  • Nitrogen, N
  • Other, each
  • Other, total
  • Oxygen, O
  • Silicon, Si
  • Titanium, Ti, Calculated as remainder
  
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