Titanium alloy

From WikiCover

On November 28, 2007, Allegheny Technologies announced that one of its proprietary alloys is being used on the Phoenix Mars Lander.

ATI Wah Chang, an ATI company, supplied ATI 425 titanium sheet to the University of Arizona for use in the Lander's Thermal Evolved Gas Analyzer (TEGA), one of the many instruments designed to support the Phoenix Mars Mission goals.

ATI 425 titanium is an innovative alloy that has strength comparable to the most common titanium alloy, grade 6-4. ATI 425 titanium is cold rollable, whereas titanium 6-4 is extremely difficult to cold roll. Thus, ATI 425 titanium provides exceptional value for fabricators because it can be formed with traditional cold metal working technology. The ability to cold work this specialty metal eliminates the costly hot forming process.

In 2006, ATI 425 titanium was designated by the ASTM as Grade 38 titanium. Since that time the alloy has gained Aerospace Material Specification (AMS) approval for use in aerospace applications. AMS 6946 provides that ATI 425 titanium sheet, strip, and plate can be used for aerospace components. Additionally, ASME Boiler Code Case 2532-2 states that ATI 425 titanium can be used for parts requiring strength up to 700o F (371o C).