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ASTM A202 Grade B is a chromium-manganese-silicon low-alloy steel tailored for high-pressure, medium-temperature pressure vessel applications.2026-04-30
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ASTM A202 Grade A is a critical chromium-manganese-silicon low-alloy steel plate specifically designed for welded pressure vessels and boilers operating at medium temperatures.2026-04-30
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ASTM A202 Pressure Vessel Steel Material and Grades:
Alloy System: **Chromium-Manganese-Silicon (Cr-Mn-Si)** Low-Alloy Heat-Resistant Steel2026-04-17 -
ASTM A204/A204M Grade B molybdenum alloy steel plates for pressure vessels feature superior chemical composition and mechanical properties compared to Grade A2026-04-10
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As a molybdenum-alloy steel plate for pressure vessels under the ASTM A204/A204M standard, A204 Gr.A is a low-alloy, high-strength material specifically designed for service conditions involving moderate temperatures (≤400°C) and moderate-to-high pressure2026-03-31
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P355QL1 steel plate, P355QL1 boiler steel plate
P355QL1 steel plate under EN10028-6 standard, it has a good weldable, so it is mainly used in high temperature equipment and pressure vessel.
P355QL1 introduce:
P…Q means the -20 degree and the impact energy is 27J
P…QH means the -20 temperature quality and the impact energy is 27J
P…QL1 means the -40 temperature quality and the impact energy is 27J
P355QL1 steel plate size:
Thickness: 6MM to 300MM, Width: 1500mm to 4050mm, Length: 3000mm to 15000mm
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P355QL1 steel chemical composition |
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Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
P355QL1 |
0.16 |
0.4 |
1.5 |
0.020 |
0.010 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Zr |
|
|
0.25 |
0.3 |
0.05 |
0.5 |
0.03 |
0.06 |
0.05 |
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Grade |
Type |
Thickness |
Yield Strength |
Tensile Strength |
Elongation |
Impact Energy |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
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|
|
|
|
|
-40 degree |
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P355QL1 |
+ QT |
t ≤ 50 |
355 |
490-630 |
22 |
27 |
|
50＜t ≤ 100 |
355 |
490-630 |
22 |
27 |
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100＜t ≤ 150 |
315 |
450-590 |
22 |
27 |
P355QL1 steel application:
P355QL1 steel plates are widely used in pressure vessel, boiler, storage tanks and heat exchanger in oil, gas project.
P355QL1 steel surface treatment: Shot blasting and painting or coated.
Additional Condition :
UT (Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered), Z Direction Test(Z15, Z25, Z35) , Charpy V-Notch Impact Test, HIC test, NDT, PWHT( Simulated Post Weld Heat Treatment), NACE0175, The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.
If you want to know more information about P355QL1 steel, please contact us and let us know your required specification, the best price will be quoted in shortest time.