ASTM A131 DH40 Shipbuilding Steel Plates

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ASTM A131 DH40 SHIPBUILDING STEEL PLATES
ASTM A131 DH40 SHIPBUILDING STEEL PLATES 3

ASTM A131 DH40 shipbuilding steel plates are high strength structural steel plates designed for use in ship construction. These plates are specifically designed to withstand the harsh marine environment and provide excellent corrosion resistance. The DH40 grade steel plates offer good weldability and machinability, making them ideal for use in the construction of various types of ships. With a high tensile strength and excellent toughness, these plates are able to withstand heavy loads and harsh weather conditions at sea. Overall, ASTM A131 DH40 shipbuilding steel plates are a reliable and durable option for shipbuilding applications.

A131 DH40 High Strength Chemical Composition

GradeThe Element Max (%)
CSiMnPSAlN
ASTM A131 DH400.180.1-0.500.90-1.60.0350.0350.015 
NbVTiCuCrNiMo
0.02-0.050.05-0.100.020.350.20.40.08

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】%

A131 DH40 High Strength Property

Grade Mechanical PropertyCharpy V Impact Test
ThicknessYieldTensileElongationDegreeEnergy 1Energy 2
ASTM A131 DH40mmMin MpaMpaMin  %-20JJ
t≤50390510-65022%2030
50<t≤70390510-65022%
70<t≤100390510-65022%
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

Advantages of ASTM A131 DH40 Shipbuilding Steel Plates

ASTM A131 DH40 shipbuilding steel plates offer several advantages that make them a popular choice for shipbuilding applications. Some of the key advantages include:

  • High Strength: ASTM A131 DH40 steel plates have high tensile strength, making them ideal for use in shipbuilding where strength and durability are essential.
  • Corrosion Resistance: These plates are designed to resist corrosion, ensuring the longevity and durability of the ships and marine structures they are used in.
  • Weldability: ASTM A131 DH40 steel plates are easily weldable, allowing for easy fabrication and construction of ships and marine structures.

Characteristics of ASTM A131 DH40 Shipbuilding Steel Plates

In addition to their advantages, ASTM A131 DH40 shipbuilding steel plates also possess certain characteristics that set them apart from other types of steel plates. Some of the key characteristics include:

  • High Impact Toughness: ASTM A131 DH40 steel plates have high impact toughness, making them suitable for use in harsh marine environments where impact resistance is crucial.
  • Good Formability: These plates have good formability, allowing for easy shaping and bending during the construction process.
  • Excellent Surface Finish: ASTM A131 DH40 steel plates have an excellent surface finish, enhancing the aesthetic appeal of the ships and marine structures they are used in.

Applications and Uses of ASTM A131 DH40 Shipbuilding Steel Plates

ASTM A131 DH40 shipbuilding steel plates are widely used in various shipbuilding applications due to their high strength, corrosion resistance, and weldability. Some of the common applications and uses of these plates include:

  • Shipbuilding: ASTM A131 DH40 steel plates are commonly used in the construction of ships, including cargo ships, oil tankers, and naval vessels.
  • Offshore Structures: These plates are also used in the construction of offshore structures such as oil platforms, drilling rigs, and wind turbines.
  • Marine Equipment: ASTM A131 DH40 steel plates are used in the manufacturing of marine equipment such as buoys, navigation aids, and ship components.

Frequently Asked Questions

1. What is the tensile strength of ASTM A131 DH40 shipbuilding steel plates?

The tensile strength of ASTM A131 DH40 steel plates is typically in the range of 510-650 MPa.

2. Are ASTM A131 DH40 steel plates suitable for welding?

Yes, ASTM A131 DH40 steel plates are easily weldable, making them ideal for fabrication and construction purposes.

3. What are the common applications of ASTM A131 DH40 shipbuilding steel plates?

ASTM A131 DH40 steel plates are commonly used in shipbuilding, offshore structures, and marine equipment manufacturing.

In conclusion, ASTM A131 DH40 shipbuilding steel plates offer a range of advantages, characteristics, and applications that make them a popular choice for the construction of ships and marine structures. Their high strength, corrosion resistance, and weldability make them ideal for use in demanding marine environments. Whether used in shipbuilding, offshore structures, or marine equipment manufacturing, ASTM A131 DH40 steel plates are a reliable and durable choice for various marine applications.

Why Choose Gnee Steel

If you want to find a trustable steel products manufacturer, Gnee will be your best choice. 15 years of experience steel products manufacturer, certified by the classification society, CE, ISO, and SGS. And we guarantee the highest safety and quality standards. We fulfill all requirements of reputed classification societies.
certificate

In addition, our steel has been successfully exported to more than 60 countries such as Germany, South Korea, the United States, Mexico, and Argentina. Many regular customers come to visit our company and factory and make multiple orders.

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What Services Does Gnee Provide?
Measurement-and-quality-testing3
  • Dimensional Inspection: Length, width, diameter; Thickness, straightness; Flatness, profile;
  • Surface Inspection: Visual inspection; Roughness testing; Coating thickness measurement;
  • Composition Testing: Interstitial elemental analysis - C,S,P, Si; Alloy grading verification; Inclusion rating;
  • Mechanical Testing: Tensile strength, yield strength; Toughness, ductility; Hardness testing;
  • Flaw Detection: Ultrasonic, radiographic testing; Magnetic particle, dye penetrant testing;
  • Documentation: Inspection reports; Test certificates; Material traceability
Machining-and-finishing1
Machining-and-finishing3
Machining-and-finishing2
  • CNC machining - turning, milling, drilling
  • Surface treatments like polishing
  • Heat treatments - quenching, annealing
  • Wet/powder coating
cutting-service3
cutting-service1
cutting-service2
  • Waterjet cutting
  • Laser cutting
  • Plasma cutting
  • Shearing/punching
Molding-and-Manufacturing3
Molding and Manufacturing1
Molding-and-Manufacturing2
  • Rolling
  • Press braking
  • Plate bending - concave & convex
  • Profile bending -custom fabrication as per drawings
Testing-and-Inspection3
Testing-and-Inspection1
Testing-and-Inspection2
  • Chemical analysis
  • Mechanical testing
  • Non-destructive examination
  • Ultrasonic, radiography testing

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