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TIMET TIMETAL® 3-2.5 Titanium Alloy (Ti-3Al-2.5V; ASTM Grade 9) Typical Properties
Categories: Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy

Material Notes: Cold Workable Medium Strength Alloy

Features: Cold formable and weldable, this alloy is used primarily for honeycomb foil and hydraulic tubing applications. Industrial applications such as pressure vessels and piping also utilize this alloy. Available with palladium stabilization to enhance corrosion resistance. The alloy is cold formable and easily welded, such like the commercially pure grades of titanium. Yet the alloys offer nearly double the strength over TIMETAL 50A. It is ASME Boiler and Pressure Vessel code approved. It offers the highest structural efficiency of any of the common engineering metals approved by ASME. The alloy is available in all common product forms including billet, bar, plate, sheet, strip, tubing and pipe. It is nonmagnetic.

Typical heat treatment for this alloy: Stress Relief: 316-649°C for .5-3 hrs, air cool. Anneal: 649-760°C for 1-3 hrs, air cool. Solution treat: 871-927°C for .25-1 hrs, water quench. Aging: 482-538°C for 2-8 hrs, air cool.

Data provided by TIMET.

Key Words: Titanium 3-2.5; UNS R56320
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Physical PropertiesOriginal ValueComments
Density 4.51 g/ccTypical
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 650 MPaTypical
Tensile Strength, Yield 550 MPa
@Strain 0.2 %
Typical
Elongation at Break 15 %Typical
Modulus of Elasticity 105 - 120 GPaTypical
Poissons Ratio 0.30
Fatigue Strength 325 MPaLimit; test specifics not reported
Shear Modulus 43.0 - 45.0 GPa
Bend Radius, Minimum 2.5 tTypical; on 0.078 in (2 mm) sheet
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.000127 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 9.61 µm/m-°C
@Temperature 20.0 - 95.0 °C
Thermal Conductivity 8.30 W/m-K
@Temperature 20.0 - 95.0 °C
Melting Point 1700 °C
Beta Transus 935 °C
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 2.5 - 3.5 %
Carbon, C <= 0.080 %
Hydrogen, H <= 0.015 %
Iron, Fe <= 0.25 %
Nitrogen, N <= 0.030 %
Other, each <= 0.10 %
Other, total <= 0.40 %
Oxygen, O <= 0.15 %
Titanium, Ti 92.6 - 95.5 %Calculated as remainder
Vanadium, V 2.0 - 3.0 %

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NTIME325 / 19294

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