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Rulon Bearings
Titanium Ti-6Al-4V ELI (Grade 23), Annealed
Categories: Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy

Material Notes: Information provided by Allvac and the references. Annealing Temperature 700-785ºC. ELI (Extra Low Interstitial) grade has lower impurity limits, especially oxygen and iron. Alpha-Beta Alloy

Applications: Applications requiring excellent fracture toughness and fatigue strength; aircraft, structural components, and biomedical implants.

Biocompatibility: Excellent, especially when direct contact with tissue or bone is required. Ti-6Al-4V's poor shear strength makes it undesirable for bone screws or plates. It also has poor surface wear properties and tends to seize when in sliding contact with itself and other metals. Surface treatments such as nitriding and oxidizing can improve the surface wear properties.

4 other heat treatments of this alloy are listed in MatWeb.

Key Words: Ti-6-4; ASTM Grade 23 titanium; UNS R56401 (ELI); Ti6Al4V, Ti64, biomaterials, biomedical implants, biocompatibility
Available Properties
  • Density
  • Hardness, Brinell, Estimated from Rockwell C.
  • Hardness, Knoop, Estimated from Rockwell C.
  • Hardness, Rockwell C
  • Hardness, Vickers, Estimated from Rockwell C.
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield
  • Elongation at Break
  • Modulus of Elasticity
  • Compressive Yield Strength
  • Notched Tensile Strength, Kt (stress concentration factor) = 3.5
  • Ultimate Bearing Strength, e/D = 2
  • Bearing Yield Strength, e/D = 2
  • Poissons Ratio
  • Fatigue Strength, Kt (stress concentration factor) = 3.1
  • Fatigue Strength, unnotched
  • Fracture Toughness, KIC
  • Shear Modulus
  • Shear Strength, Ultimate shear strength
  • Charpy Impact, V-notch
  • Electrical Resistivity
  • Magnetic Permeability, at 1.6 kA/m
  • Magnetic Susceptibility, cgs/g
  • CTE, linear
  • CTE, linear, average
  • CTE, linear, average
  • Specific Heat Capacity
  • Thermal Conductivity
  • Melting Point
  • Solidus
  • Liquidus
  • Aluminum, Al
  • Carbon, C
  • Hydrogen, H
  • Iron, Fe
  • Nitrogen, N
  • Other, each
  • Other, total
  • Oxygen, O
  • Titanium, Ti, As Balance; Elemental Composition per ASTM B265
  • Vanadium, V
Property Data

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