Executive 439TiCu is a copper coated stainless steel wire primarily used for the welding of automotive stainless steel exhaust systems and components. The coating technology creates a smooth and uniform copper layer on the wire surface that remarkably improves the weldability of the wire. This alloy, when properly welded, will retain the corrosion resistance and mechanical properties of the base metal in the weld deposit and heat-affected zone. The weld will be free of the martensite normally associated with conventional ferritic stainless steel welds. It has excellent high temperature strength, good thermal fatigue, and is well suited for thin gauge material. Superior corrosion characteristics and resistance to cracking are major advantages of this alloy. This is an 18% Chrome alloy that is stabilized with titanium. ER439 provides improved oxidation and corrosion resistance over ER409 in similar applications.