WT 685, Aerospace Material Specification 5828 is corrosion and heat resistant nickel alloy in welding wire form.

Ni: BAL% | Cr: 18.0-21.0% | Co: 12.0-15.0% | Mo: 3.5-5.0% | Ti: 2.75-3.5% | Al: 1.2-1.6% | B: 0.003-0.010%