Stainless steel react with corrosive deterioration phenomenon is known as corrosion. Common metal corrosion of intergranular corrosion, pitting corrosion, stress corrosion, fatigue, corrosion and crevice corrosion.
Intergranular corrosion
Intergranular corrosion of stainless steel corrosion in a particular medium of steel along the grain boundary of a local selective corrosion occurred. If this corrosion is the metal surface, will form micro-cracks and deep inside, until the cause breakage. In certain corrosive media (such as nitric acid, phosphoric acid, sulfuric acid, lactic acid, formic acid, hydrofluoric acid and copper sulfate, etc.), will occur along the grain boundary corrosion of stainless steel. There exist in the case of stress, intergranular corrosion may develop as intergranular stress corrosion cracking. To avoid corrosion, generally use ultra-low carbon (ω (C) ≤ 0.03%) austenitic stainless steel, duplex stainless steel and containing Titanium, Nb stabilized austenitic stainless steel.
Intergranular corrosion of stainless steel corrosion in a particular medium of steel along the grain boundary of a local selective corrosion occurred. If this corrosion is the metal surface, will form micro-cracks and deep inside, until the cause breakage. In certain corrosive media (such as nitric acid, phosphoric acid, sulfuric acid, lactic acid, formic acid, hydrofluoric acid and copper sulfate, etc.), will occur along the grain boundary corrosion of stainless steel. There exist in the case of stress, intergranular corrosion may develop as intergranular stress corrosion cracking. To avoid corrosion, generally use ultra-low carbon (ω (C) ≤ 0.03%) austenitic stainless steel, duplex stainless steel and containing Titanium, Nb stabilized austenitic stainless steel.
