ASTM A131 DH36 is a high-tensile hull structural steel for shipbuilding and offshore engineering. It features high strength, excellent -20°C low-temperature toughness, good marine corrosion resistance, stable processability and reliable weldability for harsh marine working conditions.
Production Size Range
We supply standard and customized ASTM A131 DH36 steel plates with full size coverage to meet various marine project requirements:
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Thickness: 4mm – 200mm
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Width: 1000mm – 4000mm
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Length: 4000mm – 12000mm
All sizes are supplied in as-rolled condition. One-stop processing is available, including cutting, flattening, edge beveling and ultrasonic testing (UT).
Certification & Quality Assurance
All DH36 steel plates comply with ASTM A131 standards and are approved by major international classification societies. Full MTC documents and third-party inspection are available.
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Certifications: ABS, DNV, LR, BV, CCS
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Inspection: Full chemical & mechanical testing, optional 100% UT inspection
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Quality Control: Strict internal standards to meet global marine project acceptance requirements
ASTM A131 DH36 Chemical Composition Max % for production analysis:
|
A131 DH36 high Strength Chemical Composition |
|
Grade |
The Element Max (%) |
|
C |
Si |
Mn |
P |
S |
Al |
N |
|
A131 DH36 |
0.18 |
0.1-0.50 |
0.90-1.6 |
0.035 |
0.035 |
>0.015 |
|
|
Nb |
V |
Ti |
Cu |
Cr |
Ni |
Mo |
|
0.02-0.05 |
0.05-0.10 |
0.02 |
0.35 |
0.2 |
0.4 |
0.08 |
Crack Sensitivity: Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
ASTM A131 DH36 high strength property:
|
Grade |
|
Mechanical Property |
Charpy V Impact Test |
|
Thickness |
Yield |
Tensile |
Elongation |
Degree |
Energy 1 |
Energy 2 |
|
A131 DH36 |
mm |
Min Mpa |
Mpa |
Min % |
-20 |
J |
J |
|
t≤50 |
355 |
490-620 |
22% |
34 |
24 |
|
50＜t≤70 |
355 |
490-620 |
22% |
|
|
|
70＜t≤100 |
355 |
490-620 |
22% |
|
|
|
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal |
DH36 shipbuilding steel is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.
