API 2H GRADE 42 MARINE STEEL
API 2H GRADE 42 MARINE STEEL 3

API 2H Grade 42 marine steel is a high-strength structural steel used in the construction of offshore platforms and structures. This type of steel is specifically designed for use in harsh marine environments where strength and durability are essential.

Material Properties

The following material properties are ASTM specifications and will be confirmed on the Mill Test Report.

GRADEYIELD POINT (KSI)TENSILE STRENGTH (KSI)MIN. 8” ELONGATION %
GRADE 424262-8218

CHEMICAL COMPOSITION

The following composition properties are API specifications for the 2H grade.

GRADE 42 
CARBON0.18%
MANGANESE0.90-1.35%
PHOSPHORUS MAX0.030%
SULFUR MAX0.010%
SILICON0.05-0.40%
COLOMBIUM0.04% MAX
TITANIUM0.020% MAX
ALUMINUM TOTAL0.02-0.06%
NITROGEN MAX0.012%

Advantages of API 2H Grade 42 Marine Steel

API 2H Grade 42 marine steel offers several advantages that make it a popular choice for offshore applications. Some of the key advantages include:

  • High Strength: API 2H Grade 42 steel has a minimum yield strength of 42,000 psi, making it ideal for use in high-stress applications.
  • Corrosion Resistance: This type of steel is designed to withstand the corrosive effects of seawater, making it suitable for use in marine environments.
  • Weldability: API 2H Grade 42 steel is easily weldable, allowing for efficient construction and repair of offshore structures.

Characteristics of API 2H Grade 42 Marine Steel

API 2H Grade 42 marine steel is known for its unique characteristics that set it apart from other types of structural steel. Some of the key characteristics include:

  • Impact Resistance: API 2H Grade 42 steel has excellent impact resistance, making it suitable for use in applications where dynamic loading is a concern.
  • Toughness: This type of steel exhibits high toughness, ensuring that structures built with API 2H Grade 42 can withstand harsh environmental conditions.
  • Formability: API 2H Grade 42 steel can be easily formed and shaped, allowing for the creation of complex structures with ease.

Applications and Uses of API 2H Grade 42 Marine Steel

API 2H Grade 42 marine steel is commonly used in a variety of offshore applications due to its superior strength and durability. Some of the key applications and uses include:

  • Offshore Platforms: API 2H Grade 42 steel is used in the construction of offshore platforms, including drilling rigs, production platforms, and accommodation modules.
  • Shipbuilding: This type of steel is also used in the construction of ships and marine vessels, where strength and corrosion resistance are essential.
  • Offshore Wind Farms: API 2H Grade 42 steel is utilized in the construction of offshore wind farms, providing support for wind turbines and other structures.

Frequently Asked Questions

  • What are the key advantages of API 2H Grade 42 marine steel?

API 2H Grade 42 marine steel offers high strength, corrosion resistance, and weldability, making it an ideal choice for offshore applications.

  • What are the main characteristics of API 2H Grade 42 marine steel?

API 2H Grade 42 steel is known for its impact resistance, toughness, and formability, making it suitable for use in harsh marine environments.

  • Where is API 2H Grade 42 marine steel commonly used?

API 2H Grade 42 steel is used in offshore platforms, shipbuilding, and offshore wind farms, among other applications that require high-strength structural steel.

In conclusion, API 2H Grade 42 marine steel is a versatile and reliable material that is well-suited for use in offshore applications. Its high strength, corrosion resistance, and unique characteristics make it a popular choice for construction projects in harsh marine environments. By understanding the advantages, characteristics, applications, and uses of API 2H Grade 42 steel, engineers and designers can make informed decisions when selecting materials for their projects.

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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