Form This specification covers preforms fabricated up through 5.5 inches (140 mm) inclusive in deposition width thickness (see 8.2.5) using a Plasma Arc Directed Energy Deposition (PA-DED) additive manufacturing process on a Ti-6Al-4V substrate that are subjected to post-deposition stress relief heat treatment. This is a wire fed additive manufacturing process. If required by the CEO@ preforms may require subsequent machining to meet requirements for their intended final part application. Application These products have been used typically for parts requiring strength up to 750 ??(399 ??@ but usage is not limited to such applications.