254SMO stainless steel plate is a kind of austenitic stainless steel.
Due to its high content of molybdenum, it has a high resistance to corrosion and crevice corrosion resistance. This type of stainless steel is developed and developed for use in environments such as sea water and halide. 254SMO stainless steel plate also has good corrosion resistance. Especially in the acid containing halide, the steel is better than ordinary stainless steel. Its C composition is <0.03%, so called pure austenitic stainless steel(if C composition <0.01% also called super austenitic stainless steel). Super stainless steel is a kind of special stainless steel, first the chemical composition is different from ordinary stainless steel , it refers to the high nickel, high chromium, high molybdenum, a kind of high alloy stainless steel.
One of the most famous is 6%Mo containing 254SMo, this kind of steel has good resistance to localized corrosion in sea water, air, gap, low erosion conditions, has good pitting corrosion resistance (PI = 40) and good resistance to stress corrosion, Ni based alloy and titanium alloy substitute material gold.
Second, in the high temperature or corrosion resistance performance, has a more excellent high temperature resistance or corrosion resistance which can’t be replaced by 304 stainless steel. In addition, from the classification of stainless steel, special stainless steel microstructure is a kind of stable austenitic microstructure.
Because this special stainless steel is a kind of high alloy material, so its’ manufacturing process is very complex, people can only rely on the traditional techniques such as perfusion, forging, rolling etc. to make this special stainless steel.
Main ingredients of 254SMO stainless steel plate: C<= 0.02, Mn <= 1, Ni:17.5 ~ 18.5, silicon:<= 0.8 P <= 0.03, sulfur <= 0.01, chromium: 19.5 to 20.5, copper: 0.5 to 1, Mo :6 to 6.5