Q345E low Alloy steel plate is usually produced in hot rolled state. It owned minimum yield strength at 345Mpa and tensile strength above 470Mpa. When rolling Q345E low alloy steel plate, the impacting test shall be done under low temperature at minus 40 centigrade. Yield point of Q345E low alloy steel plate decreases as plate thickness increases.
Q345E low alloy steel plate chemical composition:
| C | Si | Mn | P | S | Nb | V | Ti |
| 0.18 | 0.50 | 1.70 | 0.025 | 0.02 | 0.07 | 0.15 | 0.20 |
| Cr | Ni | Cu | N | Mo | B | Als min | |
| 0.30 | 0.50 | 0.30 | 0.012 | 0.10 | - | 0.015 |
Q345E low alloy steel plate yield strength:
| Nominal thickness (mm) | To 16 | 16-40 | 40-63 | 63-80 | 80- | 100- | 150- | 200- | 250- |
| 100 | 150 | 200 | 250 | 400 | |||||
| ReH - Minimum yield strength (MPa) | 345 | 335 | 325 | 315 | 305 | 285 | 275 | 265 | 265 |
Q345E low alloy steel plate tensile strength:
| Nominal thickness (mm) | To 40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-250 | 250-400 |
| ReH - Minimum yield strength (MPa) | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | 450-600 |
Q345E impact test temperature and energy:
| Q345E | Min Energy Nominal thickness | ||
| Temperature ℃ | -40 | ||
| Thickness (mm) | 12-150 | 150-250 | 250-400 |
| Notch impact test. Min. absorbed energy | 34 | 27 | 27 |
Q345E low alloy steel plate equivalent grades:
For referrence only!
| EU | USA | Germany | France | England | European old | Italy | Spain | China | Sweden |
| EN | - | DIN, WNr | AFNOR | BS | EN | UNI | UNE | GB | SS |
| S355NL (1.0546) | A633Gr.C | TStE355 | E355FP | 50EE | FeE355KTN | FeE355KTN | AE355KT | Q345E | Jan-35 |
| A633Gr.D | E355FR |
Q345E low alloy steel plate is low alloy structural steel with good mechanical properties, low temperature performance, plasticity and good weldability, it is mostly used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel, oil tank, cranes, mining machinery, power stations, mechanical parts, building structure, general metal parts.
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