The most high-temperature resistant stainless steel
The most heat resistant stainless steel is made of 310S material.
310S has good creep strength, can continue to work at high temperatures, and has good high temperature resistance. If it is purely heat resistant, it can not exceed 1300.
Good oxidation resistance and high creep strength at high temperatures, with a maximum temperature of 1200 ℃ and a continuous use temperature of 1150 ℃. Mainly used in industrial heating furnaces.
310S is also known as 0Cr25Ni20. Due to the high percentage of chromium and chromium nickel stainless steel having good oxidation resistance and corrosion resistance, 310S has much better creep strength, can continue to operate at high temperatures, and has good high temperature resistance. His maximum temperature is 1200 ℃, and he rarely scales.
904L stainless steel, like other commonly used Cr-Ni austenitic steels, has excellent cold and hot working properties. During hot forging, the maximum heating temperature can reach 1180 degrees Celsius, and the minimum stop forging temperature is not less than 900 degrees Celsius. The hot forming of this steel can be carried out at 1000-1150 degrees Celsius. The heat treatment process for this steel is 1100 to 1150 degrees Celsius, and it is quickly cooled after heating. Although 904L stainless steel can be welded using common welding processes, the most appropriate welding methods are manual arc welding and tungsten argon arc welding.
When manual arc welding is used to weld plates not larger than 6mm, the electrode diameter shall not be larger than 2.5mm; When the plate thickness is greater than 6 mm, the electrode diameter is less than 3.2 mm. When post welding heat treatment is required, it can be heated at 1075 to 1125 degrees Celsius and quickly cooled for treatment.
When using tungsten argon arc welding, the filler metal can be used with the same welding rod. After welding, the weld must undergo acid pickling and passivation treatment.
Alloy steel that is more resistant to high temperatures than 310s
Currently, there is no stainless steel that is more resistant to high temperatures than 310s. 310s stainless steel has excellent oxidation resistance and corrosion resistance, can withstand high temperatures, up to 1200 degrees Celsius, continuous use temperature of 1150 degrees Celsius, and is mostly used in industrial heating furnaces.
309 stainless steel also has excellent temperature resistance, with a maximum temperature resistance of 980 ℃. 309s also has excellent heat resistance and oxidation resistance.
Stainless steel is the abbreviation of stainless steel and acid resistant steel. According to the definition in GB/T20878-2007, stainless steel refers to steel with rust resistance and corrosion resistance as its main characteristics, with a chromium content of at least 10.5% and a carbon content of no more than 1.2%.
Stainless steel has good corrosion resistance, can withstand weak corrosive media such as air, steam, and water, and also has a high hardness.