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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
HII Boiler Steel Plate Chemical Composition, HII Steel Mechnical Properties
DIN HII steel is ideally suited for elevated temperature service, is commonly found in the oil & gas, petrochemical and chemical industry. This European standard grade steel has replaced the BS1501 and DIN17155 specification.
HII Boiler Steel Plate Size:
Thickness: 8mm~700mm
Width: 1500mm~4020mm
Length: 6000mm~27000mm

HII Steel Chemical Composition:
|
Grade |
C. % |
Mn. % |
S. max |
N |
Cu |
Nb |
Ti. max |
Si. |
P. max |
AL. |
Cr. |
Mo. |
Ni. |
Vi |
|
HII |
≤0.20 |
0.80-1.40 |
0.015 |
≤0.012 |
≤0.30 |
≤0.020 |
0.03 |
≤0.40 |
0.025 |
≤ 0.020 |
≤0.30 |
≤0.08 |
≤0.30 |
≤0.02 |
HII Steel Mechnical Properties:
|
Grade |
Type |
Thickness mm |
Yield strength Mpa(min) |
Tensile Strength MPa |
Elongation % (min) |
Impact Energy (KVJ) (min) |
||
|
-20° |
0° |
+20 |
||||||
|
|
Normalized |
≤16 16>to≤40 40>to≤60 60>to≤100 100>to≤150 150>to≤250 |
265 |
410-530 |
22 |
27 |
34 |
40 |
|
255 |
410-530 |
22 |
27 |
34 |
40 |
|||
|
245 |
410-530 |
22 |
27 |
34 |
40 |
|||
|
215 |
410-530 |
22 |
27 |
34 |
40 |
|||
|
200 |
400-530 |
22 |
27 |
34 |
40 |
|||
|
185 |
390-530 |
22 |
27 |
34 |
40 |
|||
Supply capacity: 2000MT/Month
Payment term: 30%TT Deposit , 70%TT OR LC
Package: Standard seaworthy package
HII Boiler Steel Plate Finished: Cutting, Painting, Ball blast, Pretreatment, Q+N.
HII Boiler Steel Plate Main Application:
Used for petrol, chemical, power station, boiler industry, etc. Making reactor, heat exchanger, separator, spherical tank, oil or gas tank, pressure vessel for nuclear reaction, high pressure water pipe, spiral case, and so on.
HII Boiler Steel Plate Tests:
HIC, SSC, SPWHT, Macrostructure, detection of defects, Hardness and DWTT test for pipelines steel plates are also available.
Delivery States:
Heat treatment facilities for hot-rolled, controlled rolling, normalizing, annealing, tempering, quenching, normalizing plus tempering, quenching and tempering, and other delivery states are available as customers’ requirement.
Thanks a lot for your interesting on our HII Boiler Steel Plate. Any need in HII Boiler Steel Plate Chemical Composition and Mechanical Properties, please feel free to contact us by email or calling to us. We will reply you in the first time.

