Structural Steel Plate

Structural steel plate is a Kloeckner Metals specialty and we routinely supply it in a range of grades and thicknesses to meet your product specifications.

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Routinely Stocked In Standard Lengths:

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Learn More About Each Structural Steel Plate Grade

More Details About Each Structural Steel Plate Grade

  • A36

    A36 is a common steel that Kloeckner is proud to supply in a wide variety of forms, most commonly steel plate. A36 is readily welded by all welding processes and is usually welded by shielded metal arc welding, gas metal arc welding, and oxyacetylene welding. You will usually find A36 bolted and riveted in various structural applications. Kloeckner supplies A36 across North America.

    Already a customer? Shop A36 on Kloeckner Direct.

  • A572 Grade 42 | 50 | 60 | 65

    Kloeckner routinely supplies A572 in the grades 42, 50, 60, and 65. A572 is used widely in structural applications across many different market segments due to its high strength. You will typically see A572 in construction in addition to other structural applications.

    Already a customer? Shop A572 on Kloeckner Direct.

  • A588

    A588 is a high-strength, low-alloy steel plate that is highly corrosion-resistant. It is typically available in three grades, A, B, and K, and frequently referred to as weathering steel. You will usually see A588 steel plate in construction, especially bridges and buildings.

    Already a customer? Shop A588 on Kloeckner Direct.

  • A871 Grade 65

    A871-65 steel plate is most commonly used in lighting poles, transmission poles and other components, and signposts. It is a low-alloy, high-strength steel plate with better corrosion resistance. When properly designed, it can be used unpainted in many applications

    Already a customer? Shop A871-65 on Kloeckner Direct.

  • A709 Grade 36 | 50 | 50W

    Kloeckner Metals stocks A709 steel plate in both standard Aand high-performance grades of 36, 50, and 50W. A709 is a common steel plate grade that’s frequently used in bridge manufacturing. We also supply it as heavy steel plate in thicknesses over 3 inches.

  • A656 Grade 50 | 60 | 70 | 80

    A656 steel plate is a high-strength, low-alloy (HSLA) steel plate with improved formability, weldability, and notch toughness when already in rolled condition. We supply it in four grades, 50, 60, 70, and 80 (the most popular). A656 is appropriate for low and ambient temperatures and is typically used in construction equipment, truck frames, crane booms, as well as general fabrication.

    Already a customer? Shop A656 on Kloeckner Direct.

  • 1045

    1045 steel plate is a high-carbon steel plate. We stock it throughout our North American facilities. It is known for its high strength properties, as well as its hardness. It is commonly used in the manufacturing of axles, gears, shafts, and other machine parts. It can be heat-treated as needed.

    Already a customer? Shop A830-1045 on Kloeckner Direct.

  • 33 MAX

    33 max is a steel plate product that is made up of up to .33 maximum carbon. It is typically used in applications where there’s no specified physical or mechanical properties.

    Already a customer? Shop 33 Max on Kloeckner Direct.


General Info About Structural Steel Plate

Structural steel is a type of carbon steel with a carbon content of up to 2.1% by weight. Structural plate is typically used for making construction materials and structures where weight savings and durability are both important factors. Kloeckner Metals stocks structural steel plate in addition to angles, beams, tubes, channels, and more, across its 40+ facilities in North America.

Frequently Asked Questions

  • What are the types of structural steel?


    There are many types of structural steel in addition to plates, including tee beams (T-beams), channels (C-beams), bearing piles (H-shapes), angles (L-shapes), I-beams (H-beams), pipes, and hollow steel sections.

  • What grade is structural steel?


    Structural steel grades designate not only the specific chemical composition of the steel plate, but also its mechanical properties. Both are a fundamental part of their intended application.

    Steels fabricated in the US must be specified according to the American Society for Testing and Materials (ASTM). For structural steels, the grade is referenced with an “A”, indicating iron and steel materials, followed by the grade, for example, “36” or “656”.

    The number designating the material, for example, “36”, is a standard specification for “Carbon Structural Steel” according to ASTM.

    When it comes to steel grades, there are several that cross multiple market segments, and therefore there is no clear logic to the grades when looking at structural steel in isolation. While A36 refers to its minimum yield strength of 36,000, the same logic is not true of the other steel grades.

  • What is the difference between steel and structural steel?


    Structural steel is a category of steels that is used in construction and other structural applications, especially where stiffness in cross-sectional areas is essential to supporting high loads without sagging.

    Other steels may fall into a category of “mild steel,” which is more suitable for other applications because it is more malleable, ductile, and can be formed into various shapes. Almost 90% of steel products fall into the category of mild steel.

  • Is structural steel hot rolled?


    Hot rolling is a mill process in which steel is rolled above its crystallization temperature, typically above 1000° F. This allows it to be formed and shaped, and produces larger amounts of steel. It is then cooled, or normalized, at room temperature, eliminating the risk of stress in the metal.

    Hot-rolling is generally required for larger, structural components, where there is less need for precise shapes and tolerances, while cold rolling is recommended for smaller parts that require more durability and precision.

  • Do you have a structural steel weight calculator?


    Yes! Please use our free structural steel weight calculator to calculate the weight of your steel plate.

  • What are the properties of structural steel?


    Several properties are important when it comes to structural steel, including strength, toughness, ductility, weldability, and durability.

    • Strength – Structural steel is specifically selected for its high strength properties.
    • Toughness – A high level of toughness makes structural steel appropriate for commercial and industrial building construction.
    • Ductility – Ductility is very important to structural steel, which must be able to maintain its structural integrity without failing during environmental incidents like earthquakes.
    • Weldability – All structural steels can be welded, however, they are susceptible to hardening of the heat-affected zone and subsequent reduced toughness.
    • Durability – Durability is one of the main reasons structural steel shows up in 47% of construction material according to the American Institute of Steel Construction.
  • What is the weight of structural steel?


    The weight of structural steel plate, like the weight of all carbon steel plates, depends on three factors: the thickness, the width, and the length. Please use our metal weight calculator to determine the weight per plate and total weight of structural steel.

  • What are the applications of structural steel?


    Structural steel shows up in:

    • Building frames
    • Bridges
    • Construction Equipment
    • Machinery
    • Truck parts
    • Crane booms
    • Transmission Towers
    • Freight Cars

Services provided to Structural Steel Plate products


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Weld Prep

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Plate Distribution

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Oxy-Fuel Cutting | Flame Cutting

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Kloeckner Metals is proud to provide tapping...


Heat Straightening

Kloeckner Metals offers heat straightening as part...


Plate Flattening

Kloeckner is proud to offer its customers...


Assembly and Kitting

Kloeckner offers advanced assembly and kitting services,...


Shipping and Logistics

Between our global footprint, international transportation network,...


Stretcher Leveling

With vast investments in the latest stretcher...



Providing the latest stamping capabilities is one...



Kloeckner provides a wide variety of end...


Roll Forming

Kloeckner’s roll forming service is capable of...


Shot Blasting

Kloeckner offers industry-leading shot blasting and paint...


Plate Processing

Let Kloeckner’s experienced thermal and plasma cutting...


Laser Cutting

For a better cut, choose Kloeckner, the...


Plate Rolling

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Branches featuring Structural Steel Plate products

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Industries served by Structural Steel Plate


Between our long experience in manufacturing for...



Kloeckner Metals is proud to supply the...


Trailer and Truck Industry

Kloeckner Metals is proud to supply metals...


Resale Industry

The metals resale industry refers to the...



Kloeckner Metals is proud to supply the...



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Kloeckner Metals is proud the supply the...


Military and Government

With growing infrastructure needs and strong investments...


Heavy Equipment & Construction

Between our long experience in heavy equipment...


Metal Building

Kloeckner meets and exceeds the needs of...


Fabricators & Machine Shops

Kloeckner leads the fabricators & machine shops...


Refuse and Recycling Industry

Kloeckner Metals is proud to supply metals...



Spearheading processes and products that match the...


Plate Fabrication

Thanks to innovative processes, superior customer service,...


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Other Steel Plate Formats

Additional Product Types

From mill to customer, we provide a streamlined ordering, manufacturing, and distribution process of over 200,000 products, eliminating the costs that come from working with multiple vendors. You’ll find that we stock the largest variety of products available and can customize any product to meet your specific requirements. A small selection is below.
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Steel Pipe and Steel Tube
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Carbon Flat Roll
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Structural Tubes
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