300 Series Stainless Steel Pipe Related Knowledge

300 series stainless steel pipe related knowledge

316H stainless steel. The internal branch of 316 stainless steel has a carbon mass fraction of 0.04%-0.10%, and its high temperature performance is better than that of 316 stainless steel. 7. 317 stainless steel. Its resistance to pitting corrosion and creep resistance is better than that of 316L stainless steel, and it is used to manufacture petrochemical and organic acid corrosion-resistant equipment. 8. 321 stainless steel. Titanium-stabilized austenitic stainless steel, which adds titanium to improve intergranular corrosion resistance and has good high-temperature mechanical properties, can be replaced by ultra-low carbon austenitic stainless steel. Except for special occasions such as high temperature or hydrogen corrosion resistance, it is not recommended for general use. 9. 347 stainless steel. Niobium-stabilized austenitic stainless steel, adding niobium to improve intergranular corrosion resistance, the corrosion resistance in acid, alkali, salt and other corrosive media is the same as 321 stainless steel, the welding performance is good, it can be used as corrosion-resistant material and resistant material. Hot steel is mainly used in thermal power and petrochemical fields, such as making containers, pipes, heat exchangers, shafts, furnace tubes in industrial furnaces, and furnace tube thermometers.

ss pipe

seamless pipe

309, 310, 314 and 330 stainless steel have relatively high nickel and chromium content in order to improve the oxidation resistance and creep strength of the steel at high temperatures. 30S5 and 310S are variants of 309 and 310 stainless steel. The only difference is that the carbon content is lower to minimize the precipitation of carbides near the weld. 330 stainless steel has particularly high resistance to carburization and thermal shock resistance.