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Advantages of duplex stainless steel used in stainless steel storage tanks


Release time:

2019-08-05

   (1) The yield strength is higher than that of ordinary austenitic stainless steel, and it has the plastic toughness required for molding. The wall thickness of the storage tank or pressure vessel made of duplex stainless steel is 30% to 50% less than that of the commonly used austenite.
  (2) It has the ability to resist stress corrosion cracking, even if the duplex stainless steel with low alloy content has the ability to resist stress corrosion cracking higher than austenitic stainless steel, in the environment containing chloride ions.
  (3) widely used in many media 2205 duplex stainless steel corrosion resistance is better than ordinary 316L austenitic stainless steel, and duplex stainless steel has high corrosion resistance, and then some media, such as formic acid can replace high alloy austenitic stainless steel, and even corrosion resistant alloy.
  (4) It has good local corrosion resistance. Compared with austenitic stainless steel with equivalent alloy content, its corrosion resistance and fatigue corrosion performance are better than austenitic stainless steel.
  (5) lower than the linear expansion coefficient of austenitic stainless steel, and carbon steel close, suitable for connection with carbon steel, has important engineering significance, such as the production of composite plates or linings.
  (6) No matter under dynamic or static load conditions, it has higher absorption capacity than austenitic stainless steel, which has a high absorption capacity for structural parts to cope with sudden accidents such as collisions.