Stainless Steel 347H Coils is a high-carbon version of type 347 stainless steel, which is stabilized with niobium (columbium) to prevent carbide precipitation during welding and high-temperature exposure. The addition of carbon in 347H enhances its high-temperature strength, making it particularly useful for applications where temperatures range between 800 to 1500°F (427 to 816°C). ... https://www.metcoresteel.com/stainless-steel-347h-coil-manufacturer-exporter-suppliers-stockists.html