Form

This specification covers a Aerospace using Alpha Beta 6Al-2Sn-4Zr-2Mo-0.08Si Titanium alloy Bars and forging (Solution and preciopitation Heat treatment

Application

These products have been used typically for parts requiring high strength and toughness and good creep resistance up to 1000 °F (538 °C), but usage is not limited to such applications.

Certain processing procedures and service conditions may cause these products to become subject to stress-corrosion cracking; ARP982 recommends practices to minimize such conditions.

Chemical components(%)

Condition

Bars

Hot finished with or without subsequent cold reduction, solution and precipitation heat treated, and descaled.

Wire

Cold drawn, solution and precipitation heat treated, and descaled.

Flash Welded Rings

Solution and precipitation heat treated and, when so specified, descaled.

Flash welded rings, when supplied, shall be manufactured in accordance with AMS 7498.

Stock for Flash Welded Rings

As ordered by the flash welded ring manufacturer.

Heat Treatment

Bars, wire, and flash welded rings shall be solution heat treated by heating to a temperature 25 to 50 F(14 to 28 °C)degrees below the beta transus, determined on each heat of alloy, holding at the selected temperature within ±15°F(±8 °C) for 60 minutes ±5, and cooling at a rate equivalent to an air cool or faster and precipitation heat treated by heating to 1100 °F±15 (593 °C ±8), holding at heat for 8 hours ±0.25, and cooling in air. Pyrometry shall be in accordance with AMS 2750.

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