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For engineers specifying materials for cryogenic pressure vessels, finding the balance between strength and ductility at sub-zero temperatures is challenging.2026-06-12
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In industries where equipment must operate reliably under freezing or cryogenic conditions, material selection becomes a matter of safety and structural integrity.2026-06-01
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While both ASTM A203 Grade B and ASTM A106 Grade B serve critical roles in industrial applications, they are fundamentally different in composition, purpose, and performance.2026-06-01
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.

