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	PRODUCT DATA of Ti 3Al 2.5V

Material	Ti 3Al 2.5V
Product Datasheet	Ti 3-2.5
General Information	Alpha/Near Alpha Titanium Alloy
Processing and Assembly	Alpha annealed
Chemical Composition	Ti-3Al-2.5V

	EXPERIENCE IN PRACTICE

Equivalent Designations

tubing alloy, half 6-4, UNS R56320

	PHYSICAL PROPERTIES

Specific Gravity

4.48

	ELASTIC PROPERTIES

Tensile Modulus

100 GPa

	THERMAL PROPERTIES

Thermal Expansion Coefficient

9.6 μstrain/°C

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

Stress Corrosion Status	High Resistance to SCC: Table 1 Data Quality: Design Data
Bimetallic Corrosion	Can 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
Welding	Nitrogen, 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 Learned

A great deal of care needs to be exercised to ensure complete inert gas (argon or helium) coverage during welding.