Weather resistance is an important quality index of steel, which refers to the ability of steel to resist corrosion under atmospheric conditions, especially whe
Weather resistance is an important quality index of steel, which refers to the ability of steel to resist corrosion under atmospheric conditions, especially when there is sunlight.
ASTM A588 Grade A weathering steel is a low alloy steel, the mass fraction of carbon in the chemical composition is 0.35%~0.45%, and the mass fraction of nitrogen is 0.03%~0.05%.
The higher the carbon mass fraction, the better the weather resistance of the steel!
Within a certain temperature range, the atmospheric corrosion resistance of ASTM A588 GradeA weathering steel is: ordinary carbon structural steel (GB1 grade)>16 Mn>20 CrMoG>13C>20 MnSiV; high-strength structural steel (GB2 grade) greater than 19 Mn >20 CrMoG>15C; low-strength structural steel is larger than Q235<235#, the higher the carbon content, the stronger the steel's ability to resist atmospheric corrosion!
ASTM A588 GradeA weathering steel is in air or water, due to the difference in oxygen content in air and water, different degrees of oxidation reactions occur, resulting in corrosion.
It produces a small corrosion current in normal temperature and water, that is, it has good oxidation resistance.
Severe corrosion (called rust) in the atmosphere or in water.
Corrosion reduces the strength of the structure.
Previous:A588 Grade B high strength weathering st Next:Carbon content of ASTM A588 Grade A weat
