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Ti-5Al-2.5Sn-ELI (low O2) is an Alpha Alloy grade Wrought Titanium Alloy. It is composed of (in weight percentage) 5% Aluminum (Al), 2.5% Tin (Sn), and the base metal Titanium (Ti). Other designations of Ti-5Al-2.5Sn-ELI (low O2) titanium alloy include MIL-T-9046, MIL-T-9047, AMS 4924, and AMS 4909.
Titanium is a white metal, and has the best strength to weight ratio among the metals. Titanium is very reactive, and because of this it is often used for alloying and deoxidizing other metals. Titanium is a more powerful deoxidizer of steel than silicon or manganese. Titanium is 40% lighter than steel and 60% heavier than aluminum. This combination of high strength and low weight makes titanium a very useful structural metal. Titanium also features excellent corrosion resistance, which stems from a thin oxide surface film which protects it from atmospheric and ocean conditions as well as a wide variety of chemicals.
The typical elastic modulus of titanium alloys at room temperature (25°C) ranges from 100 to 120 GPa. The typical density of titanium alloys is about 4.5 g/cm3. The typical tensile strength varies between 152 and 379 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.
Other common Wrought Titanium Alloys include 99.5 Ti, Ti-8Al-1Mo-1V, Ti-2.25-Al-11Sn-5Zr-1Mo-0.2Si, Ti-6Al-2Sn-4Zr-2Mo, Ti-5Al-5Sn-2Zr-2Mo-0.25Si, Ti-6Al-2Nb-1Ta-1Mo, Ti-6Al-2Sn-L.5Zr-1Mo-0.35Bi-0.1Si, Ti-8Mn, Ti-3Al-2.5V, Ti-6Al-4V, Ti-6Al-4V-ELI (low O2), 99.2 Ti, Ti-6Al-6V-2Sn-0.75Cu, Ti-7AI-4Mo, Ti-6Al-2Sn-4Zr-6Mo, Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.25Si, Ti-10V-2Fe-3Al, Ti-13V-11Cr-3Al, Ti-8Mo-8V-2Fe-3Al, Ti-3Al-8V-6Cr-4Mo-4Zr, Ti-11.5Mo-6Zr-4.5Sn, Ti-5AI-2Sn-2Zr-4Mo-4Cr, 99.1 Ti, 99.0 Ti, 99.2Ti-0.2Pd, Ti-0.3Mo-0.8Ni, and Ti-5Al-2.5Sn.
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