Boiler quality GB 713 Q420R pressure vessel steel plates

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Boiler quality GB 713 Q420R pressure vessel steel plates

Boiler quality GB 713 Q420R pressure vessel steel plates

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Description:Boiler quality GB 713 Q420R pressure vessel steel plates are high strength steel with good fatigue resistance, high toughness and low brittleness transition tem...

Production Capacity:6000ton//Month

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Products Description

Boiler quality GB 713 Q420R pressure vessel steel plates">pressure vessel steel plates are high strength steel with good fatigue resistance, high toughness and low brittleness transition temperature. Besides, Q420R steel plates have good cold forming performance and welding performance, good corrosion resistance and certain wear resistance.

Boiler quality GB 713 Q420R pressure vessel steel plates chemical composition ( max, %):

GB713 C Si Mn Cu Ni Cr Mo Nb V Ti Alt P S
Q420R ≤0.20 ≤0.55 1.30-1.70 ≤0.30 0.20-0.50 ≤0.30 ≤0.08 0.015-0.050 ≤0.100 ≤0.030   ≤0.020 ≤0.010

Boiler quality GB 713 Q420R pressure vessel steel plates mechanical property:

GB713 Thickness, in mm Tensile Strength Yield Strength, min Elongation, %, min Temperature Impact energy (J)
Q420R 10<T≤20 590-720 420 18 -20 60
20<T≤30 570-700 400

Boiler quality GB 713 Q420R pressure vessel steel plates have high comprehensive mechanical properties especially in normalizing or normalizing and tempering state. Q420R steel plates are widely used in large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, overweight machinery, mining machinery, and other large welded structural parts.

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