AISI 347

AISI 347 stainless steel is an austenitic stainless steel alloy stabilized with niobium, offering excellent resistance to intergranular corrosion, especially after exposure to high temperatures. Its composition includes 17-19% chromium, 9-13% nickel, and small amounts of niobium (0.2-1%), which prevents carbide precipitation during welding and high-temperature service. This makes AISI 347 ideal for applications involving prolonged exposure to elevated temperatures, such as in chemical processing, power generation, and aerospace industries. It also exhibits good mechanical properties, weldability, and oxidation resistance, similar to AISI 321, but with enhanced stability in challenging thermal environments.

Equivalent/Similar Standards