GB Standard Q345D HSLA Steel
Q345D steel plate is a kind of low alloy high-strength structural steel, its chemical composition contains a small amount of alloying elements, such as Mn, Si, S, P, etc., which can effectively improve the strength and toughness of the steel plate. Meanwhile, Q345D steel plate also has good plasticity and welding performance, which can be processed by bending, stamping, cutting, etc., and the welding quality is stable and reliable.
q345D high strength low alloy steel plate chemical composition
EN S355J2 equivalent grade Q345D steel chemical composition:
| Grade | C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | Als |
| Q345D | 0.18 | 0.50 | 1.70 | 0.030 | 0.025 | 0.07 | 0.15 | 0.20 | 0.30 | 0.5 | 0.30 | 0.012 | 0.1 | Min. 0.015 |
q345D high strength low alloy steel sheet yield strength
| Grade | Yield strength ReH/(N/mm2) (t≤16mm) min | ||||||||
| ≤ 16 | > 16 ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 ≤ 100 | > 100 ≤ 150 | > 150 ≤ 200 | > 200 ≤ 250 | > 250≤ 400 | |
| S355J2 | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 | 265 |
| Q345D | 345 | 335 | 325 | 315 | 305 | 285 | 275 | 265 | 265 |
q345D hSLA structural steel plate tensile strength
| Grade | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | ||||||
| ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 ≤ 100 | > 100 ≤ 150 | > 150 ≤ 250 | > 250≤ 400 | |
| Q345D | 470-680 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | 450-600 |
q345D low alloy steel plates elogation
| Grade | Elongation A/%(t≤40mm) min | |||||
| > 3 ≤ 40 | > 40 ≤ 63 | > 63 ≤100 | > 100 ≤ 150 | > 150 ≤ 250 | > 250≤ 400 | |
| Q345D | 21 | 20 | 20 | 19 | 18 | 17 |
Q345D high strength steel plate Products Details
Because Q345D low alloy structural steel plate has good strength and toughness, it is widely used in construction, vehicles, ships, bridges and other fields. In the field of construction, Q345D low alloy steel sheet can be used to make the load-bearing structure and beams and columns of high-rise buildings, etc.; in the field of vehicles, it can be used to make frames, carriages, wheels and other parts; in the field of ships, it can be used to make hulls, decks and other structures; in the field of bridges, it can be used to make girders, arches and ribs and other structures of bridges.
Q345D high tensile steel plate Products image
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