Q345D is a commonly used low-alloy sheet in China. The European standard S355J2 and the American ASTM A529MGr50 are equal to Q345D material. Chemical compositions slightly different, the same mechanical properties. "Q" means yield strength, Q345 said that the yield strength of this steel is 345MPa.
GB/T1591 Q345D steel is widely used in bridges, vehicles, ships, construction, pressure vessels, etc.
C:≤0.18; Si:≤0.50; Mn:≤1.70; P:≤0.030; S:≤0.025; Nb:≤0.07; V:≤0.15; Ti:0.20; Cr:≤0.30; Ni:≤0.50; Cu:≤0.30; N:≤0.012; Mo:≤0.10; Al:≥0.015
Mechanical Property:
|
Thickness (mm) |
||||
|
Q345D |
≤ 16 |
> 16 ≤ 35 |
> 35 ≤ 50 |
>50 |
|
Yield strength (≥Mpa) |
345 |
325 |
295 |
275 |
|
Tensile strength (Mpa) |
470-630 |
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Anyway, if you want to find High quality GB/T1591 Q345D Low-alloy steel pipe supplier, manufacturer, exporter, please contact Katalor steel’s sales team. We can assure you we will offer you the best price steel pipes with best quality.
