Q345R steel plate specifications

Q345R steel plate is also named as Q345R pressure vessel steel plate or Q345R boiler plate. Q345R steel plate is mainly for high or intermediate and low temperature services of boiler steel products and engineering, oil and gas companies, chemical industry, power plants, etc.

Q345R steel plate chemical composition:

Grade	C %	Si %	Mn %	Cu %	Ni %	Cr%	Mo %	V %	Ti %	Alt %	P %	S %	Nb
Q345R	0.2	0.55	1.2-1.7	0.3	0.3	0.3	0.08	0.05	0.03	0.02	0.025	0.01	0.05

Q345R steel plate mechanical properties:

Thickness (mm)	> 3 ≤ 16	> 16 ≤ 36	> 36 ≤ 60	>60 ≤ 100	>100 ≤ 150	>150
Yield strength (≥Mpa)	345	325	315	305	285	265
Tensile strength (Mpa)	510-640	500-630	490-620		480-610	470-600

Q345R steel plate size, Q345R steel plate specifications:
Q345R steel plate thickness: 6mm-450mm
Q345R steel plate width: 1500mm-4200mm, Typical width: 1500mm, 1800mm, 2000mm, 2200mm, 2500mm
Q345R steel plate length: 3000mm-18000mm, Typical length: 6000mm, 9000mm, 12000mm

Q345R steel plate contains certain alloy elements, which make Q345R steel plate yield strength tend to be high. Therefore, we should review the real destrength ratio / real yield strength of Q345R steel plate from the quality guarantee certificate or the production unit, the ratio of the degree to the actual Q345R steel plate tensile strength.