5Al-2.5Sn Titanium per DMS 1568
The DMS 1568 is a Boeing specification that covers 5Al-2.5Sn Titanium Sheet, Strip, & Plate in the Annealed Condition
6-6-2 Alloy (UNS R56620) is a highly beta-stabilized, two-phase, alpha-beta titanium alloy which is a modification of the Ti6Al-4V system. Because of the higher Beta stabilizing elements (additional Vanadium + Fe and Cu), this alloy has a higher strength potential than Ti-6Al-4V, but at a sacrifice of weldability and toughness. In most cases, the welding of 6-6-2 alloy is not recommended. It can be used in the annealed or solution treated and aged conditions.
Why does your project call out DMS 1568?
DMS specifications originate from Boeing’s Long Beach facility under D1-4426 Approved Process Lists. DMS1568 / DMS 1568 originated at the Long Beach facility, therefore it is widely used for Boeing’s aircraft manufacturing at multiple locations.
