Q235 is a material in steel and a brand in ordinary carbon structural steel. No alloying elements are specially added to Q235. The yield strength of Q235 is 235mpa. The Q in front is the abbreviation of yield strength. Mainly used in construction, mostly rolled steel bars, steel sections, steel plates, etc., not seamless pipes. Mainly used in bridges, factories, ships and other construction and engineering projects. Use without heat treatment.
Q235A, Q235B, Q235C, Q235D. This is a distinction between levels, and what it represents is mainly that the temperature of the impact is different! The difference between A, B, C, and D refers to the difference in impact temperature in their performance. They are: Q235A level, no impact; Q235B level, 20 degree normal temperature impact; Q235C level, 0 degree impact; Q235D level, -20 degree impact. At different impact temperatures, the impact values are also different. Element content: The sulfur content of A, B, C, and D decreases in order; A and B have the same phosphorus content, C has the second highest phosphorus content, and D has the least phosphorus content
Q235C grade contains C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.040 P ≤0.040
