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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
P275NL1 steel plate, P275NL1 steel mechanical properties
P275NL1 steel is a pressure vessel steel designed for low temperature use. This is done through the reduction of phosphorus and sulphur in the steel. We have one of Europe’s largest stocks of P275NL1 available for immediate dispatch . It is also one of the best as it relies extensively on material supplied by Dillinger Hutte whose steel is world famous for its ultra low phosphorous and sulphur content.

|
Grades |
C max |
Si max |
Mn. max |
P max |
S max |
N max |
AL min |
Cr max |
Cu max |
Mo max |
Ni max |
Nb max |
Ti max |
V max |
|
P275NL1 |
0.16 |
0.4 |
0.80-1.50 |
0.03 |
0.015 |
0.012 |
0.02 |
0.3 |
0.3 |
0.08 |
0.5 |
0.05 |
0.03 |
0.05 |
|
Grade |
|||||||
|
Thickness |
Yield |
Tensile |
Elongation |
Impact Energy(KV J) min |
|||
|
P275NL1 |
mm |
Min Mpa |
Mpa |
Min % |
-20° |
0° |
+20° |
|
≤ 16 |
275 |
390-510 |
24 |
47 |
55 |
63 |
|
|
16> to ≤35 |
275 |
390-510 |
24 |
47 |
55 |
63 |
|
|
35> to ≤50 |
265 |
390-510 |
24 |
47 |
55 |
63 |
|
|
50> to ≤70 |
255 |
390-510 |
24 |
47 |
55 |
63 |
|
|
70> to ≤100 |
235 |
370-490 |
23 |
47 |
55 |
63 |
|
|
100> to ≤150 |
235 |
350-470 |
23 |
47 |
55 |
63 |
|

