Difference between Q235A and Q235B

1. The carbon content of Q235A steel is between 0.14-0.22%, and the carbon content of Q235B steel is between 0.12-0.20%; Secondly, in tensile and impact experiments;

2. material Q235A steel does not do impact test, material Q235B steel to do room temperature impact test, V-notch.

3. The mechanical properties of steel made of Q235B are stronger, and the mechanical properties of steel made of Q235A are weaker.

4. Q235B is stronger in welding performance, while Q235A is weaker.

5. Q235A ingredients: Mn - 0.30-0.65, the Si - 0.3, S -- 0.05, p - 0.045;Q235B ingredients: Mn - 0.30-0.70, the Si - 0.3, S P - 0.045-0.045.

Steels of Q235A and Q235B are carbon structural steels. In the national standard GB700-88, the material distinction of Q235A and Q235B is mainly in the carbon content of steel.

Scope of Application

Steel wire is widely used in the manufacture of many wire products.