-
ASTM A202 Grade B is a chromium-manganese-silicon low-alloy steel tailored for high-pressure, medium-temperature pressure vessel applications.2026-04-30
-
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
-
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
-
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
P275NH steel plate specification
P275NH steel plate is according to EN 10028:3 standard, the specification EN 10028:3 covers a range of weldable fine grain steels supplied in the normalised condition and intended for pressure purposes. P275NH is steel for pressure purposes (P) with minimum yield strength of 275 MPa (275) which has specified elevated temperature properties (NH).

|
Element |
Max % |
Element |
max % |
|
C |
0.18 |
Cu |
0.30 |
|
Si |
0.40 |
Mo |
0.08 |
|
Mn |
0.50-1.40 |
N |
0.02 |
|
P |
0.03 |
Nb |
0.05 |
|
S |
0.03 |
Ni |
0.50 |
|
AL |
0.020 |
Ti |
0.03 |
|
Cr |
0.30 |
V |
0.05 |
|
Nb+Ti+V |
0.05 |
|
|
|
Grade |
Type |
Thickness |
Yield Strength |
Tensile Strength |
Elongation |
Impact Energy |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
||
|
|
|
|
|
-20 degree |
||
|
P275NH |
Normalized |
t≤ 16 |
275 |
390-510 |
24 |
30 |
|
16< t ≤40 |
265 |
390-510 |
24 |
30 |
||
|
40<t ≤60 |
255 |
390-510 |
24 |
30 |
||
|
60< t ≤100 |
235 |
370-490 |
23 |
30 |
||
|
100<t≤150 |
225 |
360-480 |
23 |
30 |
||
|
150<t≤250 |
215 |
350-470 |
23 |
30 |

