Features of ASTM A588 Grade B weather resistant steel plate

ASTM A588 Grade B weather resistant steel plate refers to low-alloy structural steel that has a protective rust layer to resist atmospheric corrosion and can be used to manufacture vehicles, bridges, towers, containers and other structures. Compared with ordinary carbon steel, ASTM A588 Grade B weather resistant steel plate has better corrosion resistance in the atmosphere.

The principle of ASTM A588 Grade B weather resistant steel plate: after adding phosphorus, copper, chromium, nickel and other trace elements to the steel, a dense and highly adherent protective film is formed on the surface of the steel, which prevents the spread and development of rust, and protects the substrate under the rust layer to slow down Its corrosion rate.

Chemical composition of ASTM A588 Grade B weather resistant steel plate: The alloy composition and weight percentage of ASTM A588 Grade B weather resistant steel plate are: C: 0.12～0.21, Si: 0.2～2.0, Mn: 0.7～2.0, S ≤0.036, P≤0.034, Cu: 0.10～0.40, Al< 0.2.