Titanium Grade 5 (Ti-6Al-4V/UNS R56400)

  • Heat treatable
  • Great weldability and fabricability
  • Stronger than pure commercial Titanium
  • Excellent fracture toughness
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The grade 5 Titanium alloy is considered to be the workhorse among the titanium alloy industries. It is a fully heat treatable alloy and can be quickly welded to form parts for aerospace machines, as well as marine and offshore applications. It is one of the critical components for engine parts of many vessels.

When compared to pure commercial Titanium, this is found to be stiffer and has the same thermal properties. It also has excellent fatigue resistance and low thermal expansion capability, making it suitable for subsea gas and oil industries.

Common Names:

  • Ti6Al4V
  • Ti-6Al-4V
  • Ti 6-4
  • TC4

Chemical Properties:

  • Titanium (%): 87.6-91
  • Aluminum (%): 5.5-6.76
  • Vanadium (%): 3.5-4.5
  • Others (%): Remainder

Mechanical Properties:

  • Yield Strength (MPa) (Aging at 975-1025°F): 1034
  • Yield Strength (psi) (Aging at 975-1025°F): 150000
  • Tensile Strength (MPa): 897-1000
  • Tensile strength (ksi): 130-145
  • Break Elongation over 2-inches: 10-18%
  • Elasticity Modulus (GPa): 114
  • Elasticity Modulus (msi): 17
  • Hardness (Rockwell C): 36

Physical Properties:

  • Density: 0.159(Lb/in3) /4.42 (g/cm3)
  • Melting point: 3000 (oF) / 1649(oC)
  • Specific heat: 560 (J/kg-°C /0.134 (BTU/lb-°F)
  • Thermal Conductivity: 7.2 (W/mK) / 67(BTU-in/hr-ft2oF)
  • Mean Co-Efficient of Thermal Expansion: 8.6*10-6 (0-100°C /°C) /4.8 (0-212°F /°F)
  • Reduction in the area (%): 20

Key Features:

  • Heat treatable: The Titanium gr 5 can withstand heat up to 400o Hence, it is highly desirable for industries, where machine engines can heat up high.
  • Resistant to corrosion: 6 4 titanium is one of the most proficient corrosion-resistant alloys among the titanium grades, which stand against corrosives like acids and certain gases.
  • Lightweight but strong: The light weighted nature of grade 5 makes it suitable for many industries that need machines to be able to float or wither in air or water. So, this alloy is extensively used for aircraft and ship construction.
  • Weldable and fabricable: It is easy to weld titanium alloys, but grade 5 is way better in this field compared to others. Hence, conferring a shape to the parts made with this alloy involves lesser time and labor investment.

Product Forms Available:

  • Bars, Forging stock, Wires, Sheet, Plate, Extrusions, Strips

Rod, Bar, Wire, and Forging Stock

  • ASME SB-348, AMS 4928, AMS 4965, AMS 4967, AMS 4963, MIL-T-9046, MIL-T-9047, AMS 4920

Plate, Sheet, and Strip

  • ASME SB-265, AMS 4911

Welding Wire

  • AWS A5.16 ERTi-5


  • Aircraft construction
  • Rings for jet engines
  • Airframe and space capsule components
  • Pressure vessels
  • Power generation industries
  • Medical equipment
  • Sporting goods

Possible Alternative Grades:

  • Titanium Grade 23: It is one of the most corrosion-resistant varieties among titanium alloys. It is highly ductile as it has lesser oxygen content compared to TC4 Titanium. Grade 23 is strong, lightweight, and preferred in saltwater environments too.
  • Titanium Grade 4: It a solid grade of Titanium, though with a reduced ductility. It is formable and weldable and can be used for constructing stiff machinery parts.

Frequently Asked Questions:

  • How is Titanium Grade 5 produced?

The grade 5 Titanium is produced by primary melting using various techniques such as vacuum arc (VAR), plasma arc hearth melting (PAM), or electron beam (EB).

  • What are the standard heat treatment methods used?

The typical heat treatment methods are solution treating and aging, duplex annealing, and mill annealing.

  • What is the maximum value of Young’s Modulus of Titanium grade 5?

The maximum value of Young’s modulus of Titanium grade 5 is 113 GPa.

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