API 2H Grade 50

API 2H Grade 50 is a structural steel plate that is used in offshore structures. Kloeckner Metals routinely supplies it across our 40+ branches nationwide.

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General Info About API 2H Grade 50

This grade offers intermediate strength. It has high impact toughness and high resistant to fatigue loading. It is also tough classed as a marine & offshore steel plate grade and can be used in different of applications because of its stringent specifications.

More Details About API 2H Grade 50

  • Advantages/Disadvantages

    This intermediate strength steel is specifically approved for marine applications.

  • Industries

    It is often used in the construction industry as well as the marine and shipbuilding industry.

  • Applications

    It is typically used in applications where good impact and fatigue strength is required. Examples are tubular joints, stiffened plate construction, and bridge construction.

  • Welding

    For the industries and applications it serves, weldability is critical, since it is typically used in welded construction for offshore structures.

  • Heat Treatment

    It is heat treatable.

Chemical Properties

0.18%1.15 - 1.60% 0.030%0.010%0.05 - 0.40%0.01 - 0.04%0.020% MAX0.02 - 0.06%0.012%

Mechanical Properties

Mechanical Properties
Tensile Strength, Ultimate483 - 620 MPa70,053 - 89,923 PSI
Tensile Strength, Yield345 MPa50,038 PSI
Elongation at Break (in 50 mm)23.0%23.0%

Frequently Asked Questions

  • What does ABS stand for?


    ABS stands for American Bureau of Shipping and indicates that the grade was certified by the Bureau.

  • What does API stand for?


    API stands for the American Petroleum Institute. It is certified by API and can in some instances be dual certified by ABS.

  • What are equivalent grades to API 2H Grade 50?


    Equivalent grades to this grade are EN10225:S355, EN10225:S420, EN10225:S460, API 2H, and API 2W.

  • What supplements are available for API 2H Grade 50?


    There are multiple supplements following available for this grade including, S1 (Ultrasonic Examination per A578 Level C), S3  (Individual Plate Testing for Mechanical Properties), S4 (Though-Thickness Testing), S5 (Low Sulfur for improved Through-Thickness Properties), and S8 (Strain-Aged Charpy V-Notch Impact Testing).

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