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GB713 Q420R pressure vessel quality plate steel plate

GB713 Q420R grade is a kind of pressure vessel quality plate. This steel has high strength, high toughness and weldability, and is mainly used in the manufacture of mobile pressure vessels, such as automobile tank cars and railway tank cars.

Chemical composition ( %, by mass):


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

Mechanical properties:


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

According to user requirements, Q420R pressure vessel quality plate can be delivered in different states such as normalizing, tempering, normalizing and tempering, and quenching and tempering.

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