Hastelloy C-4 is a nickel-chromium-molybdenum alloy with excellent thermal stability and outstanding resistance to intergranular corrosion. It demonstrates strong performance against pitting, crevice corrosion, and stress corrosion cracking in aggressive industrial environments. With low carbon and silicon content, it maintains high corrosion resistance after welding and heat treatment. It features good formability, weldability, and mechanical properties, making it ideal for use in severely corrosive conditions.