Q390D Low-alloy High-strength Steel Plate
Q390D steel plate is a low alloy high strength structural steel plate, Q390D is not only a high strength steel, it is also a low carbon steel.Q390D low alloy steel material has high yield strength, high toughness and low brittle transition temperature; better cold forming properties and welding properties; good corrosion resistance and some wear resistance.
Q390D high strength low alloy structural steel plate chemical composition
| Grade | C % | Si % | Mn | P % | S % |
| Q390D | ≤ 0.20 | ≤ 0.55 | 1.00-1.60 | ≤ 0.030 | ≤ 0.030 |
Q390D high strength low alloy steel plate mechanical property
| Grade | Thickness | Yield Strength (Mpa) | Tensile Strength | Elongation(%) | ImpactEnergy | |
| (mm) | (MPa) | Min | ||||
| Q390D | ≤ 16 | 390 | 490-650 | 20 | -20 | 34 |
| >16-35 | 370 | 490-650 | 20 | -20 | 34 | |
| >35 | 350 | 490-650 | 20 | -20 | 34 | |
| The min impact energy is longitudinal energy | ||||||
Q390D high strength low alloy steel sheet Products Details
Q390D hsla structural steel plate implementation standard: GB/T1591-2018.
Q390D low alloy steel plates delivery status: steel plate is delivered in hot rolled, controlled rolled, normalized, normalized rolled, normalized plus tempered, thermomechanically rolled (TMCP) or thermomechanically rolled plus tempered status
Q390D low alloy structural steel plate thickness direction performance: when the steel plate is required to have thickness direction performance, the above provisions of the grade were added to represent the thickness direction performance level of the symbol Z15, Z25, Z35.
Q390D low alloy steel sheet smelting: steel smelting by converter or electric furnace, if necessary, can be refined outside the furnace.
Q390D high strength steel plate size, shape, weight and allowable deviation: Q390D steel plate size, shape, weight and allowable deviation should be in line with the provisions of the corresponding standards GB/T 709.
Q390D high tensile steel plate application scope: Q390D is adapted to electric power tower, all kinds of lifting cranes, heavy vehicles, oil derricks, high temperature fans, large electric shovels, dump trucks and drilling rigs, hydraulic supports in coal mines, steel structures and so on.
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