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Alloy Ti 6Al/4V • UNS 56400

Ti 6Al/4V is the most widely used of all the alpha-beta titanium alloys accounting for more than 50% of total titanium usage. It is typically used in the annealed condition, at service temperatures through 400°C (750°F). Ti 6Al/4V is welded with matching or with ELI filler wire.

Ti 6Al/4V is significantly stronger than commercially pure titanium while having the same stiffness and thermal properties excluding thermal conductivity, which is about 60% lower in Grade 5 Ti than in CP Ti. Amongst its many advantages, it is heat treatable.

This grade is an excellent combination of strength, corrosion resistance, weld and fabricability. In consequence, its uses are numerous such as for military aircraft or turbines. It is also used in surgical implants. Generally, it is used in applications up to 400°C to improve ductility and toughness in cold-worked condition.

Available tube product forms

Typical Applications

  • Surgical implants
  • Aerospace tubing
  • Pressure tubing

Typical manufacturing specifications

  • ASTMF1472
  • ASTM F620
  • ASTM 543
  • Also individual customer specifications.

Industries predominantly using this grade

Technical Data

Mechanical Properties

Temper Annealed Cold-worked
Tensile Rm 116 ksi (min) 150 ksi (min)
Tensile Rm 800 MPa (min) 1034 MPa (min)
R.p. 0.2% Yield 102 ksi (min) 135 ksi (min)
R.p. 0.2% Yield 700 MPa (min) 930 MPa (min)
Elongation (2” or 4D gl) 10 % (min) 8 % (min)

Physical Properties (Room Temperature)

Specific Heat (0-100°C) 565°K-1
Thermal Conductivity 6.7 W.m -1.°K-1
Thermal Expansion 8.6 μm/μm/°C
Modulus Elasticity 120 GPa
Electrical Resistivity 17.1 μohm/cm
Density 4.43 g/cm3

Chemical Composition (% by weight)

Element Min Max
Al 5.5 6.5
C - 0.08
Fe - 0.25
H - 0.015
N - 0.05
Ti Balance
O - 0.2
V 3.5 4.5