NeoNickel

Ti 6-2-4-2

A titanium-aluminium-tin-zirconium-molybdenum alloy, Titanium 6-2-4-2 is primarily used for applications requiring high strength and toughness.

Excellent resistance to fatigue and crack propagation, Ti 6-2-4-2 has outstanding resistance to corrosion in a wide range of media.

  • UNS Number: UNS R56400
  • Werkstoff Number: 3.7164, 3.7165
  • ASTM: B265, 348, 381, 363, MSRR8610, 8614. 8652, 4920, 4928, 4934, 4935, 4965, 4967, 6930, 6931, 6931B, B337, B338
  • AMS: 4911

Product availability

Plate
Round Bar
Sheet
Welding Wire

Chemical analysis

%AlSnZrMoCNHO SiFeYOthers, eachOthers, totalTi
Min5.51.83.61.8----0.06-----
Max6.52.24.42.20.050.050.0150.120.10.250.0050.10.3Balance

Key Properties

  • Density: 4.429 g/cm³
  • Modulus of Elasticity /x10<sup>5</sup> MPa: 1.14
  • Thermal Conductivity /kcal/(hr.m.°C): 5.952
  • Beta Transus: 996°C

About Ti 6-2-4-2

A near-alpha alloy, primarily used due to its high strength and toughness, Ti 6-2-4-2 has good creep resistance up to 550°C.

The forging and machining characteristics of Ti 6-2-4-2 are similar to those of Ti 6Al-4V.

The weldability of Ti 6-2-4-2 is fair, using AMS 4952 weld wire. Several different treatments are available.

Sheet & Strip under 0.1875″ thickness: Duplex anneal: 899°C, 30 minutes, air cool, followed by 787°C 15 minutes, air cool. Triplex anneal: 899°C 30 minutes, air cool, followed by 787°C 15 minutes air cool, 593°C 2 hours air cool.

Plate 0.1875 inch thickness and over: Duplex anneal: 343°C 60 minutes, air cool, followed by 593°C 8 hours air cool. Triplex anneal: 899°C 30 minutes, air cool, followed by 787°C, 15 minutes air cool, 593°C 2 hours air cool.

Bar and Forgings: Duplex anneal: Solution anneal 25 – 50°C below. Beta transus 1 hour, air cool or faster, 593°C 8 hours air cool.

For more information on Ti 6-2-4-2 Contact us today, or fill in our online quote form!

Minimum Tensile Properties, AMS 4919, Duplex Annealed

Thickness, in0.025 ≤ 0.062> 0.062 ≤ 1.000> 1.000 ≤ 3.000
Tensile Strength, ksi135,000135,000135,000
0.2% offset Yield Strength, ksi 125,000125,000125,000
Elongation, %810 10

Bend Factors, Duplex Annealed, AMS 4919

Nominal Thickness, in≤ 0.070> 0.070 < 0.1875
Factor, 105° Bend910

Applications

  • Compressor discs and blades
  • Airframe structure andskin
  • Engine afterburner components
  • Hush kits
  • Motorsport components
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