How About the Corrosion Resistance of 2205 Stainless Steel?

The advantages of 2205 stainless steel:

(1) The yield strength is more than austenitic stainless steel, with sufficient plasticity and toughness, and can be formed. The wall thickness of the storage tank or pressure vessel made of duplex stainless steel is 30-50% lower than the wall thickness of the commonly used austenite, which is conducive to reducing costs.

(2) It has excellent resistance to stress corrosion cracking. Even the duplex stainless steel with the lowest alloy content has higher stress corrosion cracking resistance than austenitic stainless steel, especially in the environment containing chloride ions. Stress corrosion is a prominent problem that ordinary austenitic stainless steel is difficult to solve.

(3) The corrosion resistance of 2205 duplex stainless steel, which is the most common application in many media, is better than that of ordinary 316L austenitic stainless steel, while ultra-duplex stainless steel has high corrosion resistance. In acetic acid, formic acid and other media, it can even replace high-alloy austenitic stainless steel or even corrosion-resistant alloys.

(4) It has good local corrosion resistance. Compared with austenitic stainless steel with the same alloy content, its wear resistance and fatigue corrosion resistance are superior to austenitic stainless steel.

(5) The coefficient of linear expansion is lower than that of austenitic stainless steel, close to carbon steel, suitable for connection with carbon steel, and has important engineering significance, such as the production of composite panels or lining.

(6) No matter under dynamic or static load conditions, it has higher energy absorption capacity than austenitic stainless steel. It has obvious advantages in handling collisions, explosions and other accidents, and has practical application value.