A lot of customers are feeling confused of the difference of Q235A, Q235B, Q235C, Q235D and Q235E, Please check the introduce details from JAWAYSTEEL as below:

Q235A，Q235B，Q235C，Q235D，Q235E stand for different grades. The main difference is about the shock of temperature.

A  means the degrees should be over 40 degree centigrade.

B  means the degrees should be over 20 degree centigrade.

C  means the degrees should be over 0 degree centigrade.

D  means the degrees should be over -20 degree centigrade.

E  means the degrees should be over -40 degree centigrade.

From Q235A to Q235E, for respectively:

Q235A grade: do not shock;

Q235B grade: 20 degree centigrade ambient temperature shock;

Q235C grade: The shock with 0 degree centigrade;

Q235D grade: -20 degree centigrade shock;

Q235E grade: -40 degree centigrade shock.

The impact value is also different according to the impact of different temperature.

 Element content:

The content of Sulfur from A, B, C, D is decreased by degress decrease successively. The contents of Sulfur are same in A and B. Then C followed, D with the lest content.

Chemical composition:

Low-alloy plate

Q235 could be divided into A, B, C, D four grades (GB/T 700-2006)

Q235A grade, including C ≤0.22% Mn ≤1.4% Si ≤0.35% S ≤0.050 P ≤0.045;

Q235B grade, including C ≤0.20% Mn ≤1.4% Si ≤0.35% S ≤0.045 P ≤0.045;

Q235C grade, including C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.040 P ≤0.040;

Q235D grade, including C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.035 P ≤0.035.

If you have any further question or inquiry. please feel free to contact JAWAYSTEEL.

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