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Q420B high strength steel plate

Q420B is a low alloy high strength structural steel. Q420B is not only a high strength steel, but also a low carbon steel. It's just that its tensile strength is a little higher. The yield strength of Q235 is 235N/mm^2 while the yield strength of Q420 is 420N/mm^2. Due to its low carbon content, it cannot be tempered and processed, and it is still impossible to process shafts, gears, etc. But it is very good to make steel plates, and its strength is much higher than Q235. Q420 has high 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 - 1.70%, phosphorus (P) ≤ 0.035%, sulfur (S) ≤ 0.035%, niobium (Nb) 0.015 - 0.060%, vanadium (V) 0.02 - 0.20%, titanium (Ti) 0.02 - 0.20%, etc.

Implementation standard: GB/T 1591-2008
Mechanical properties: yield strength ≥ 420MPa, tensile strength 520 - 680MPa, elongation ≥ 18%.
Delivery status: generally delivered in hot rolling, controlled rolling, normalizing and other states.
Features: High strength: has high yield strength and tensile strength, can withstand large loads.
Good welding performance: convenient for various welding processes.
Application areas: Construction industry: such as large steel structure buildings, bridges, etc.
Machinery manufacturing: structural parts of various types of engineering machinery and heavy machinery.
Mining equipment: such as key components of mining vehicles and mining equipment.

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High-strength steel plate