GB/T1591 Q345B carbon and low alloy steel plate

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10-May-2024

GB/T1591 Q345B steel plate is steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur, chromium and nickel). GB/T1591 Q345B steel plate is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and GB/T1591 Q345B steel plate is used for a number of manufacturing purposes

The Chemical Composition（%）and Mechanical Properties of GB/T1591 Q345B steel plate:

GB/T1591 Q345B steel plate Chemical Composition（%）								GB/T1591 Q345B steel plate Mechanical Properties
NO	C	Si	Mn	P	S	Cr	Ni	Cu	Tensile Strength（MPa)	Yield Strength（MPa)
1	0.17	0.26	1.27	0.023	0.004	0.029	0.011	0.005	490	345

The rolling size of GB/T1591 Q345B steel plate:

Thickness	1.2-600mm
Width	1220-4200mm
Length	5000-18000mm

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