Q235B low carbon steel

Q235B steel plate is a kind of low carbon steel, the national standard GB/T 700-2006, Q235B is one of the most common steels in China.

Q235B low carbon steel has certain elongation, strength, good toughness and castability, and is easy to punch and weld.

The difference between Q235A and Q235B:
The material difference between Q235A and Q235B is mainly in terms of carbon content of steel.
The plate of Q235A is not subjected to impact test, while Q235B is subjected to impact test at room temperature with V-notch. Relatively speaking, the mechanical properties of steel made of Q235B are much better than those of steel made of Q235A.

Chemical composition of Q235B:
C:≤0.20%
Si: ≤0.35%
P:≤0.045%
Cr: Allowable residual content ≤ 0.030%
Ni: allowable residual content ≤ 0.030%

Q235B mechanical properties;
Yield strength≥235MPa, 24Kg/mm;
Tensile strength 375-460MPa, 38-47Kg/mm;
Elongation 26min.

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