( 1 ) more than twice as high yield strength than ordinary austenitic stainless steel, and has a plastic molding requires sufficient toughness . Wall thickness using magnetic stainless steel tank or pressure vessel than usual 30-50% reduction in austenite , help reduce costs.
( 2 ) has excellent resistance to stress corrosion cracking capacity , even with the lowest amount of duplex stainless steel alloy also has a higher capacity than the austenitic stainless steel resistant to stress corrosion cracking , especially chlorine ions in the environment . Stress corrosion is a prominent problem difficult to solve common austenitic stainless steel .
( 3 ) In many applications the most common medium of 2205 duplex stainless steel corrosion resistance than ordinary 316L austenitic stainless steel, and super duplex stainless steel with high corrosion resistance , and then some of the medium, such as acetic acid , formic acid can even replace high-alloy austenitic stainless steel, as well as corrosion resistant alloys .
( 4 ) has good resistance to localized corrosion , compared with austenitic stainless steel alloy content corresponding to its resistance to corrosion and wear and fatigue resistance superior to austenitic stainless steel.
( 5 ) the linear expansion coefficient lower than the austenitic stainless steel , and carbon steel close connections for steel has important engineering significance , such as the production of composite panels and linings .
( 6 ) whether under qiyi magnetism stainless steel or static load conditions than the austenitic stainless steel has a higher energy absorption capacity , which structures to cope with unexpected incidents such as collisions , explosions , etc., duplex stainless obvious advantages, there are practical applications .
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