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PRODUCT DATA of Ti 3Al 2.5V
MaterialTi 3Al 2.5V
Product DatasheetTi 3-2.5
General InformationAlpha/Near Alpha Titanium Alloy
Processing and AssemblyAlpha annealed
Chemical CompositionTi-3Al-2.5V
EXPERIENCE IN PRACTICE
Equivalent Designationstubing alloy, half 6-4, UNS R56320
PHYSICAL PROPERTIES
Specific Gravity4.48
ELASTIC PROPERTIES
Tensile Modulus100 GPa
THERMAL PROPERTIES
Thermal Expansion Coefficient9.6 μstrain/°C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Data Quality: Design Data
Bimetallic CorrosionCan be connected without any restriction to: Cr, Cu, Brass, Cu-Ni alloys, Al-bronzes, Si-bronzes, Gun metal, P-bronzes, Sn-bronzes, Ag, 300 and 400 series stainless steel, low alloy steel, Au, Pt, C, Rh
Can be connected in a non-controlled environment to the above and Ni, Monel, Inconel, Ni-Mo alloys
Can be connected in a clean room environment to above and Cd, Al-Cu alloys
Needs specific measures: All others
Test:ECSS-Q-ST-70C Rev.1 Table 5.1
Data Quality: Design Data
WeldingNitrogen, hydrogen, carbon dioxide, and mixtures containing these gases shall not be used
Welding with alloy-matching fillers is recommended, preferably using extra Low Interstitial (ELI) filler wires
SPECIAL RECOMMENDATIONS
Lessons LearnedA great deal of care needs to be exercised to ensure complete inert gas (argon or helium) coverage during welding.