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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
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 |
|

