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Q390D high strength steel plate

Q390D is a low alloy high strength structural steel. The Q390D steel plate is implemented in the following standards: GB/T1591-2018 standard, GB = national standard, 1591-2018 = steel plate standard production number Q390D is not only a high strength steel, but also a low carbon steel. Q390D has high yield strength, good fatigue resistance, high toughness and low brittle transition temperature, good cold forming performance and welding performance, good corrosion resistance and certain wear resistance.

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High-strength steel plate

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Chemical composition: usually contains carbon (C) ≤ 0.20%, silicon (Si) ≤ 0.55%, manganese (Mn) 1.00 - 1.60%, phosphorus (P) ≤ 0.030%, sulfur (S) ≤ 0.025%, niobium (Nb) 0.015 - 0.060%, vanadium (V) 0.02 - 0.20%, titanium (Ti) 0.02 - 0.20%, etc.
Implementation standard: GB/T1591-2018
Mechanical properties: yield strength ≥ 390MPa, tensile strength 490 - 650MPa, elongation ≥ 20%.
Delivery status: generally delivered in hot rolling, normalizing or normalizing rolling state.
Features: High strength: has high yield strength and tensile strength, can withstand large loads.
Good low temperature toughness: can still maintain good mechanical properties in low temperature environment, suitable for engineering structures in cold areas.
Application areas: Building structures: such as large bridges, high-rise buildings, towers, etc.
Machinery manufacturing: such as key components of heavy machinery and equipment such as cranes and excavators.
Energy field: towers and brackets of wind power generation equipment, etc.

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High-strength steel plate