Q345B H beam is most common used as beam and column members in steel structures for industrial and civil buildings.Q345B H beam has a better bearing capacity in advantage of its higher tensile strength. Min. Yield strength 355Mpa Specification:GB/T 11236,GB/T 1591 Stock Length:2 meter to 12 meter.
| Programmer | Code | Related chemical composition | Hardness（HB） | Extensio（%） | Tensile Strength（MP） | Yield Strength（MP） | ||||
| Material | C | Si | Mn | P | S | |||||
| Mn board | Q345B | 0.18 | 0.55 | 1.4 | 0.03 | 0.03 | 163-187 | 21 | 470-660 | 345 |
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