Q235 Q235A Q235B Structural Steel Beams
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Q235 H-beam is an ordinary carbon structural steel used throughout China. It is also known as Q235A, Q235B, Q235C and Q235D. Since it is a low carbon steel, it does not require heat treatment in production. q denotes the yield point and 235 denotes the yield strength. It has good plasticity and weldability.
Q235 Grade structural steel beams Chemical Composition
| Chemical Composition (heat analysis), %, ≤ | |||||||
| Steel Grade | Quality Grade | C | Si | Mn | P | S | Deoxidation Method |
| Q235 | Q235A | 0.22 | 0.35 | 1.40 | 0.045 | 0.050 | Rimmed / Killed |
| Q235B | 0.20 | 0.35 | 1.40 | 0.045 | 0.045 | Rimmed / Killed | |
| Q235C | 0.17 | 0.35 | 1.40 | 0.040 | 0.040 | Killed | |
| Q235D | 0.17 | 0.35 | 1.40 | 0.035 | 0.035 | Exceptionally Killed | |
Q235 Grade H Beam Iron Yield Strength
| Yield Strength (MPa, ≥); Thickness or Dia. (d) mm | Tensile Strength (MPa) | ||||||
| Steel Grade | Quality | d≤16 | 16< d ≤40 | 40< d ≤100 | 100< d ≤150 | 150< d ≤200 | d≤100 |
| Q235 | Q235A | 235 | 225 | 215 | 195 | 185 | 370-500 |
| Q235B | |||||||
| Q235C | |||||||
| Q235D | |||||||
Q235 Grade H Section Steel Minimum Charpy Impact
| Charpy impact (V notch) | |||
| Steel Grade | Quality | Temp. ℃ | Impact energy (longitudinal, ≥ J) |
| Q235 | Q235A | – | – |
| Q235B | +20 | 27 | |
| Q235C | 0 | ||
| Q235D | -20 | ||
Q235 Grade Structural Steel H Beam Product Details
In GB/T 700-2006 standard, carbon structural steel Q235 H shaped steel are classified into four grades: A, B, C and D according to metallurgical quality.The chemical composition of Q235A, B, C and D H section beam is different.The sulfur content of A, B, C and D decreases in the order of A, B, C and D. The phosphorus content of A and B is the same, followed by C, and the phosphorus content of D is the least. The different grades of Q235A, Q235B, Q235C and Q235D represent different impact temperatures; A means no impact, B means above 20 degrees, C means above 0 degrees and D means above -20 degrees.
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