A near-alpha alloy, primarily used for high strength and toughness, with good creep resistance up to 1000°F. Forging and machining characteristics similar to those of Ti 6Al-4V. Applications include compressor components, hot airframe skin, and engine afterburner structures. 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: 1650 ± 25°F), 30± 3 minutes, air cool, followed by 1450± 25°F 15± 2 minutes, air cool. Triplex anneal: 1650°F ½ hour, air cool, followed by 1450°F ¼ hour, air cool, 1100°F 2 hours air cool.

Plate 0.1875 inch thickness and over: Duplex anneal: 650± 25°F 60± 5 minutes, air cool, followed by 1100±25°F 8 hours ± 15 minutes, air cool. Triplex anneal: 1650°F ½ hour, air cool, followed by 1450°F ¼, air cool, 1100°F 2 hours air cool.

Bar and Forgings: Duplex anneal: Solution anneal 25 - 50°F below. Beta transus 1 hour, air cool or faster, 1100°F 8 hours air cool.