Ti 6-2-4-2 can be used in a variety of applications, here are just a few examples:
Compressor discs and blades
Airframe structure andskin
Engine afterburner components
About Ti 6-2-4-2
A near-alpha alloy, primarily used due to its high strength and toughness, Ti 6-2-4-2 has good creep resistance up to 550°C.
The forging and machining characteristics of Ti 6-2-4-2 are similar to those of Ti 6Al-4V.
The weldability of Ti 6-2-4-2 is fair, using AMS 4952 weld wire. Several different treatments are available.
Sheet & Strip under 0.1875″ thickness: Duplex anneal: 899°C, 30 minutes, air cool, followed by 787°C 15 minutes, air cool.
Triplex anneal: 899°C 30 minutes, air cool, followed by 787°C 15 minutes air cool, 593°C 2 hours air cool.
Plate 0.1875 inch thickness and over: Duplex anneal: 343°C 60 minutes, air cool, followed by 593°C 8 hours air cool. Triplex anneal: 899°C 30 minutes, air cool, followed by 787°C, 15 minutes air cool, 593°C 2 hours air cool.
Bar and Forgings: Duplex anneal: Solution anneal 25 – 50°C below. Beta transus 1 hour, air cool or faster, 593°C 8 hours air cool.
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