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