Stainless steel 310S is an austenitic heat resistant alloy with excellent resistance to oxidation under mildly cyclic
conditionsthrough 2000°F. Grade 310S is a lower carbon version, less prone to embrittlement and sensitisation in service. The highchromium and medium nickel content make these steels capable for applications in reducing sulphur atmospheres containing H2S.They are widely used in moderately carburising atmospheres, as encountered in petrochemical environments. For more severe carburising atmospheres other heat resisting alloys should be selected. Grade 310 is not recommended for frequent liquid quenching as it suffers from thermal shock. The grade is often used in cryogenic applications, due to its toughness and low magnetic permeability.The extended branch seat, also called the short pipe branch seat Nipolet, is commonly used for valve installation and exhaust. The thickness is available in two grades, XS and XXS, with nominal sizes ranging from 1/2 inch to 5 inches, and the ends are sockets or external threads.The branch seat body is made of high-quality forgings, and the materials used are the same as the pipe materials, including carbon steel, alloy steel, stainless steel and other materials.