Q235 Q355 HM CARBON STEEL H PROFILE
Q235 HM carbon steel H-shaped steel is a new type of economical construction steel. The steel H beam has an economical and reasonable cross-section shape, good mechanical properties, the extension of each point on the rolled section is relatively uniform, and the internal stress is small. Compared with ordinary I-beam steel, it has a larger section modulus, has the advantages of being light in weight and saving metal. , the structure is reduced by 30-40%; and because the inner and outer legs are parallel and the legs are at right angles, when assembled into components, 25% of the welding and riveting workload can be saved.
Q355 HM carbon steel H beam is a newer Chinese steel grade that was designed to replace Q345. Its material density is 7.85 g/cm3 and possesses three quality levels, including Q355B, Q355C, and Q355D. It has great mechanical and hot and cold process properties. In contrast, it has better and more improved mechanical properties when compared to A36 ASTM steel.
Q235 H section steel elongation
| Dia. (d) mm; Elongation (%) | ||||||
| Sample direction | d≤40 | 40 < d ≤ 63 | 63 < d ≤ 100 | 100 < d ≤ 150 | 150 < d≤ 200 | 250 < d ≤ 400 |
| Horizontal | 20 | 19 | 18 | 18 | 17 | 17 |
| Vertical | 22 | 21 | 20 | 18 | 17 | 17 |
Q355 H beam wide flange charpy impact
Charpy (V-notch) impact test temperature and impact absorption energy (KV2/J).
| Quality | Temperature | Longitudinal Impact Energy (J), ≥ | Transverse Impact Energy (J), ≥ |
| Q355B | 20 ℃ | 34 | 27 |
| Q355C | 0 ℃ | 34 | 27 |
| Q355D | -20 ℃ | 34 (for thickness ≥250mm) | 27 (for thickness ≥250mm) |
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