ASTM A240 347 stainless steel plate surface smooth, high plasticity, toughness and mechanical strength, acid, alkaline gas, solution and other media corrosion. It is an alloy steel that is resistant to rust, but not absolutely resistant to rust. ASTM A240 347 stainless steel plate refers to atmospheric, steam and water and other weak medium corrosion of steel plate, and acid resistant steel plate refers to acid, alkali, salt and other chemical corrosion medium corrosion of steel plate.
ASTM A240 347 stainless steel plate surface deposited with dust or different metal particles containing other metal elements of the attachment, in the humid air, the condensation between the attachment and stainless steel, the two connected into a micro battery, triggered an electrochemical reaction, the protective film is damaged, known as electrochemical corrosion.
ASTM A240 347 stainless steel plate surface adhesion organic juice, in the case of water and oxygen, organic acids, organic acid corrosion of the metal surface for a long time.
ASTM A240 347 stainless steel plate surface adhesion contains acid, alkali, salt substances, causing local corrosion.
In the polluted air, in case of condensation water, sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion above can cause the damage of ASTM A240 347 stainless steel plate surface protective film caused by rust.
