The two materials,
309S stainless steel and
310S stainless steel, have relatively high contents of nickel (Ni) and chromium (Cr), and also increase the content of selenium (Si), making them resistant to high temperatures, corrosion, and oxidation.
309S stainless steel is an austenitic chromium-nickel stainless steel, corresponding to the Chinese brand 06Cr23Ni13, with a heat resistance temperature of 1050°C, and can be repeatedly heated at 980°C. It can be used with a large load for a long time at 650 to 700°C, and has excellent high temperature acid resistance. and high temperature intensity. Generally used in exhaust machines, heat treatment furnaces, incinerators, heat exchangers, etc.
310S stainless steel corresponds to the Chinese brand 06Cr25Ni20, with a high temperature resistance of 1200°C and can be used continuously at a temperature of 1150°C. It is a mainstream steel type in the heat-resistant steel series. It is suitable for making various furnace components and is widely used in oil and natural gas fluid transportation pipelines and machinery. Parts etc.
