Titanium 5-2.5 ELI

5Al-2.5Sn ELI

Material Data Sheet

High service temperatures (480°C), Intermediate strength, Improved high-temperature strength compared to unalloyed Ti, Excellent weld fabricability, Oxidation resistance, Microstructure stability, Nonheat-treatable (contains only iron impurity as a beta-stablizing element)

Chemical Composition
Element Content (%)
Titanium, Ti 92.5
Aluminum, Al ≤ 5.0
Iron, Fe ≤ 0.25
Oxygen, O ≤ 0.12
Tin, Sn ≤ 2.5
Physical Properties
Properties Metric Imperial
Density 4.48 g/cc 0.162 lb/in³
Mechanical Properties
Properties Metric Imperial
Hardness, Brinell 311 311
Hardness, Knoop 337 337
Hardness, Rockwell C 33 33
Hardness, Vickers 325 325
Tensile Strength, Ultimate 775 MPa 112000 psi
Tensile Strength, Yield 720 MPa 104000 psi
Elongation at Break 18% 18%
Creep Strength 276 MPa 40000 psi
Tensile Modulus 110 GPa 16000 ksi
Notched Tensile Strength 1080 MPa 157000 psi
Poissons Ratio 0.31 0.31
Fatigue Strength 410 MPa 59500 psi
Fracture Toughness 88.0 MPa-m½ 80.1 ksi-in½
Shear Modulus 48.0 GPa 6960 ksi
Charpy Impact 44.0 J 32.5 ft-lb
Applications

Grade 6 Ti-5Al-2.5Sn ELI is used in the following application areas:

  • Gas turbine engine casings and rings
  • Aerospace structural parts, aircraft engine and airframe.
  • Chemical processing equipment

Key Words: UNS R54521 (ELI); Ti-5-2.5

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