GB/T 1591 Q345B HSLA Steel Sheet
GB-T1591 Q345B is Low alloy high strength steel plate, Q345 is a steel material. It is carbon alloy steel (c<0.2%), with good comprehensive performance, good low temperature performance, good cold stamping performance, good welding performance and cuttable performance. Widely used in bridges, vehicles, ships, buildings, pressure vessels, etc. Q stands for the yield of this material, followed by 345, which means the yield value of this material, at about 345MPa. And it will make the yield value decrease with the increase of the thickness of the material.
q345B low alloy structural steel plate chemical composition
|
Grade |
C |
Si |
Mn |
P |
S |
V |
Nb |
Al |
Ti |
|
Q345B |
≤0.20 |
≤0.55 |
≤1.70 |
≤0.040 |
0.040 |
0.02-0.15 |
0.015-0.060 |
– |
0.02-0.20 |
q345B low alloy steel sheet yield strength
| Grade | Yield strength MPa in different thickness mm | ||||||||
| ≤16 | 16-40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-200 | 200-250 | 250-400 | |
| Q345B | ≥345 | ≥335 | ≥325 | ≥315 | ≥305 | ≥285 | ≥275 | ≥265 | - |
Q345B high strength steel plate tensile strength
| Grade | Tensile strength MPa in different thickness mm | ||||||
| ≤40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-250 | 250-400 | |
| Q345B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
Q345B high strength sheet metal Products Details
The external implementation standard of Q345B is GB709, and the internal implementation standard is GB/T1591-94, due to the implementation standard, this kind of steel plate allows negative tolerance delivery. The latest implementation standard is GB/T1591-2018.
Q345B grade, is 20 degrees room temperature impact .
Q345B high strength plate Products sizes
| Material | thicknesses | height | lengths |
|
Q345B |
8 |
2600 |
12000 |
|
Q345B |
10 |
2200 |
10000 |
|
Q345B |
20 |
2200 |
9000 |
|
Q345B |
30 |
2490 |
11000 |
|
Q345B |
40 |
2200 |
8800 |
|
Q345B |
50 |
2300 |
12000 |
|
Q345B |
60 |
2650 |
12400 |
|
Q345B |
70 |
2350 |
9400 |
|
Q345B |
80 |
2540 |
12200 |
|
Q345B |
90 |
2300 |
12300 |
|
Q345B |
100 |
2510 |
10200 |
|
Q345B |
110 |
2650 |
9450 |
|
Q345B |
120 |
2560 |
8500 |
|
Q345B |
130 |
2380 |
12110 |
|
Q345B |
140 |
2390 |
12150 |
|
Q345B |
150 |
2370 |
10150 |
|
Q345B |
160 |
2360 |
9250 |
|
Q345B |
170 |
2360 |
8710 |
|
Q345B |
180 |
2360 |
9350 |
|
Q345B |
200 |
2380 |
8330 |
|
Q345B |
220 |
2380 |
7060 |
|
Q345B |
240 |
2380 |
7250 |
|
Q345B |
260 |
2370 |
6500 |
|
Q345B |
280 |
2260 |
6480 |
|
Q345B |
300 |
2160 |
7300 |
Q345B high strength structural steel plate Products Image
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