Q345B Steel Plate

Q345B steel plate is a kind of steel material. It is a low-alloy steel (c<0.2%) with good overall performance, good low temperature performance, cold stamping performance, welding performance and machinability. It is widely used in bridges, vehicles, ships, buildings, pressure vessels, etc. q represents the yield of this material, and 345 in the back refers to the yield value of this material, around 345mpa. And as the thickness of the material increases, its yield value decreases. EMHK is specialized in Manufacturing Q345B Steel Plates, we export 1000-5000 tons Q345B Plates to overseas. Pls contact us if necessary.

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Definition:
Q345B steel plate
Q345B steel plate
Grade expression method: The steel grade consists of three parts: the Chinese phonetic alphabet representing the yield strength, the yield strength value, and the quality grade symbol. For example: Q345B, where:
Q—The first letter of the Chinese Pinyin of “qu” for the yield strength of steel;
345—Yield strength value, unit MPa;
B—Quality grade is B grade.
When the buyer requires the steel plate to have thickness direction performance, the symbol representing the thickness direction (Z direction) performance level is added after the above-mentioned grades, for example: Q345BZ15.
Executive standard: implement GB/T1591-2008.

Chemical Compositions:

C:≤0.20%,
Si≤0.50%,
Mn:≤1.70%,
P≤0.035%,
S:≤0.035%,
Nb≤0.07%,
V:≤0.15%,
Ti≤0.20%,
Cr≤0.30%,
Ni:≤0.50%,
Cu:≤0.30%,
N:≤0.012%,
Mo:≤0.10%

Mechanical properties
Yield Strength:
≤16mm: ≥345,
16-40mm: ≥335,
40-63mm: ≥325,
63—80mm: ≥315,
80—100mm: ≥305,
100—150mm: ≥285,
150-200mm: ≥275.
Tensile strength: 450-630.
Elongation: greater than 17.
Impact test: Test temperature: 20°C: greater than 34.

Q345B Steel Plate Specification Sizes:

GradeThk mmWide mmLength mm
Q345B8260012000
Q345B10220010000
Q345B2022009000
Q345B30249011000
Q345B4022008800
Q345B50230012000
Q345B60265012400
Q345B7023509400
Q345B80254012200
Q345B90230012300
Q345B100251010200
Q345B11026509450
Q345B12025608500
Q345B130238012110
Q345B140239012150
Q345B150237010150
Q345B16023609250
Q345B17023608710
Q345B18023609350
Q345B20023808330
Q345B22023807060
Q345B24023807250
Q345B26023706500
Q345B28022606480
Q345B30021607300

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