Q390D steel application areas: Q390D low-alloy high-strength steel is mainly used to manufacture low-temperature-resistant, high-strength key components, construction machinery, and mining machinery structures.
Q390D low alloy featuresLow-alloy structural steel is also called ordinary low-alloy, HSLA steel. The specific analysis is as follows: Performance requirements of alloy structural steel:
(1) High strength: Generally, its yield strength is above 300MPa.
(2) High toughness: The elongation is required to be 15%-20%, and the room temperature impact toughness is greater than 600kJ/m～800kJ/m. For large welded components, higher fracture toughness is also required.
(3) Good welding performance and cold forming performance.
(4) Low cold brittle transition temperature.
(5) Good corrosion resistance.
Q390D low alloy specification① Available Q390D steel plate specification range: thickness 6-700mm, width 500-4800mm, length 3000mm-27000mm, single weight maximum 30.00 tons. Larger specifications and single-weight steel plates can also be provided according to needs;
② Types of steel plates available: carbon structural steel plates, low-alloy high-strength steel plates, steel plates for bridges, steel plates for building structures, steel plates for shipbuilding and offshore platforms, steel plates for boilers and pressure vessels, steel plates for molds, steel plates for alloy structures, More than 300 domestic and foreign brands such as steel plates for oil and gas pipelines, high-strength and high-toughness steel plates, corrosion-resistant steel plates, composite steel plates, and wear-resistant steel plates;
③It can be used for testing requirements, Q390D Z15-Z35 thickness direction performance requirements, high strength and high toughness steel plates;
④ Delivery status of available Q390D low alloy plates: hot rolling, controlled rolling, normalizing rolling, normalizing, tempering, quenching, annealing, normalizing and tempering, quenching and tempering, etc.;
⑤ The ship plate has been certified by the classification societies of nine countries including CCS, ABS, LR, BV, VL, RINA, NK, KR.
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