P355QH steel grade is quenched and tempered steel grade for weldable fine grain pressure purposes. P355QH Grade has a good weldable and used in high temperature equipment and pressure vessel.
Sizes:
Thickness: 1.5 mm -300mm
Width: 1000mm-4000mm
Length: 1000mm-18000mm
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Main chemical elements composition of P355QH |
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|
C |
Si |
Mn |
P |
S |
B |
N |
Cr |
|
0.16 |
0.40 |
1.50 |
0.025 |
0.015 |
0.005 |
0.015 |
0.30 |
|
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
|
0.30 |
0.25 |
0.05 |
0.50 |
0.03 |
0.06 |
0.05 |
|
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Thickness (mm) |
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|
P355QH |
≤ 50 |
> 50 ≤ 100 |
> 100 |
|
Yield strength (≥Mpa) |
355 |
335 |
315 |
|
|
≤ 100 |
> 100 |
|
|
Tensile strength (Mpa) |
490-630 |
450-590 |
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Application:
P355QH pressure vessel steel is widely used in petroleum, chemical industry, power station, boiler, etc, used to make the reactor, heat exchanger, separator, liquefied gas, nuclear reactor pressure vessel, boiler steam drum steam, liquefied petroleum, hydropower station, hiQH pressure pipe, spiral case and other equipment and components.