Product Types

Steel Plate

Kloeckner is proud to offer customers one of the largest inventories of steel plate in North America.

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Kloeckner is one of the only steel distributors in North America to stock higher-grade plate products, including armor, PVQ, and tempered plates. With a diverse product line that spans the complete steel plate group, we pride ourselves on the unparalleled breadth of our inventory.

Learn More About Each Steel Plate Format

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General Info About Steel Plate

A steel plate is a flat sheet of steel that is typically rectangular in shape. It is one of the most common forms of steel used in various industries due to its versatility, strength, and durability. Steel plates are manufactured through a process called hot rolling or cold rolling, depending on the desired properties of the final product.

Hot rolling involves heating the steel billets or slabs to high temperatures and then passing them through a series of rollers to shape them into thin sheets. Cold rolling, on the other hand, involves rolling the steel at room temperature, resulting in a smoother and more precise surface finish.

Steel plates come in various thicknesses, ranging from a few millimeters to several inches, and they can be used for a wide range of applications. Some common uses of steel plates include construction, manufacturing, automotive, shipbuilding, energy, oil & gas, defense, and more.

The specific type and grade of steel used for a plate depend on the intended application and the required mechanical properties, such as tensile strength, toughness, and corrosion resistance. Steel plates can be made from carbon steel, alloy steel, stainless steel, or other specialized grades to meet specific industry requirements.

More Details About Each Steel Plate Grade

  • A36

    A36 is strong, easily machined, welded, and formed. This versatility makes it an all-purpose steel popularly used in most building components, bridges, agricultural equipment, machinery, and many other industries and applications. One signature characteristic of A36 is its combination of strength and ductility. This gives it excellent impact resistance. One drawback for this steel grade is that it does not demonstrate corrosion resistant properties.

  • 33 Max

    33 Max is a hot rolled carbon plate of commercial quality. It is a carbon steel that is useful for counterweighting and load testing. It’s most common for applications that do not require specific mechanical capabilities including elevator counterweights, agricultural equipment and other heavy machinery.

  • A283

    A283 is a low carbon structural steel. It shows good strength and formability, as well as excellent weldability and machining capability. It is ideal for use in industrial and commercial structures including riveted, bolted, and welded construction, including bridges, warehouses, tanks, and other industrial and commercial structures.

  • A285

    A285 is a formable and strong carbon steel intended for fusion-welding in applications like pressure vessel boilers, tanks, and heat exchangers. It is easy to form, machine, and weld but is not recommended for structural applications.

  • A514

    A514 is a high value low carbon alloy steel offering high performance in high-wear and structural applications. It has high strength and is impact and corrosion resistant. It’s commonly used for mining equipment, bridges, bucket components, and hauling and lifting devices.

  • A572

    A572 plate is low-alloy structural steel that shows an optimal combination of high strength, high notch toughness, good weldability, and excellent value. As a result, it is often referred to as a “workhorse” grade in that it shows up in such a wide range of industries and applications. For instance, it is often purposed in construction equipment, bridges, buildings, machinery, freight cars, and transmission towers. Two important considerations with this steel grade is that it can be difficult to form, and when welding, both pre and post testing is recommended to ensure against cracking.

  • A588

    A588 is a durable, low alloy steel known for its atmospheric corrosion resistance, making it better for outdoor exposure applications, like welded bridges, buildings, and other structures.

  • A633

    A633 is a high strength, low alloy structural steel best suited for applications requiring notch toughness in subzero temperatures. It is commonly used for heat exchangers, spherical tanks, oil and gas tanks, boiler drums, and separators in the marine, chemical, power, and boiler industries.

  • A656

    A656 is a high-strength, low alloy steel offered in four different grades and three chemical requirements. It shows good formability, weldability, and notch toughness when in the as-rolled condition, and does well in low and ambient temperatures. Due to its higher strength levels, it is commonly used in the construction industry in construction equipment, crane booms, truck frames, and for other general fabrication applications.

  • A709

    A709 is a high performance steel stocked in the flat-rolled, as-in condition. It is most common in manufacturing and construction for things like pedestrian bridges, railroad bridges and overpasses and highway bridge girders and components.

  • A710

    A710 is available in two specifications—A and B—each containing three classes. It is an age-hardened low carbon alloy steel with high strength that is often used for applications requiring weight reduction and where manufacturers are looking to reduce welding costs or improve the ease of fabrication.

  • A871

    A871 is a high strength low alloy weathering steel. It has great structural integrity, durability, and performs well against corrosion. It is available in grades 60 and 65 and can be provided in the as-rolled, normalized, or quenched and tempered conditions.

  • 1020

    1020 is a low carbon steel used in the turned and polished or cold drawn condition. It has improved formability, good weldability, high strength, and high ductility. However, its low carbon content makes it resistant to induction and flame hardening. It is mainly used in the automotive, heavy truck, and agricultural equipment industries.

  • 1045

    1045 shows high wear resistance and strength. Additionally, it has good weldability, good machinability, and impact resistant properties in the normalized and hot-rolled condition. It is widely used for all industrial applications including gears, pins, rams, light gears, bolts, crankshafts, connecting rods, and hydraulic clamps.

  • AR200

    AR200 is a high value abrasion resistant steel with good hardness moderate machinability, and fair ductility.

  • AR400

    AR400 is a high-carbon alloy steel with high wear resistance, good formability, excellent weldability, good corrosion resistance, and protection against sliding and impact abrasion. It is ideal in the mining and aggregate industries in applications like dump truck liners, storage bins liners, hopper bucket liners and construction equipment.

  • AR450

    AR450 is a high-carbon alloy steel most suitable for rugged applications requiring high endurance. It is a high wear resistant steel with good hardness, formability, weldability, ductility, and impact resistance. It retains a quality surface finish. However, this grade steel is not recommended for machining.

  • AR500

    AR500 is a high-carbon alloy steel that performs in severe weather conditions and shows excellent wear and impact resistance. It withstands wear and tear, and has good corrosion resistance. It is not recommended for heavy wear applications including mining equipment, armor, truck plows, dump trucks, and buckets but it is not recommended for applications requiring good formability or malleability.

  • AR600

    Due to its impressive surface hardness which makes it most ideal for high wear applications, AR600 is the most durable abrasion resistant steel offered. It is best for severe wear applications and is most frequently seen in the mining and aggregate removal industries in bulldozers, cutting edges and grates, hoppers, and truck beds.

  • SA516

    SA516 is the most popular high value pressure vessel quality product. It is available in four different grades, 55, 60, 65 and 70 and offered in the normalized condition. It provides an optimum combination of strength, notch toughness, and weldability and withstands moderate to low temperatures and corrosion. SA516 meets high performance standards required by oil, gas, and petrochemical industries for use in boilers and pressure vessels and it is also common in the construction, automotive, and railroad industries for use in power stations, reactors, heat exchangers, separators, various kinds of tanks, pressure shells, and boiler drums.

  • SA537

    SA537 is a heat treated pressure vessel quality plate with tolerance in harsh weather conditions. It shows good corrosion resistance, and sustains strength levels at high pressures with excellent stress distribution. Its designated classes are determined by their specific heat treatment process wherein class I is normalized and class II is quenched and tempered.

  • SA612

    SA612 is a fine grain fully deoxidized plate intended for use in welded pressure vessels. It is impact resistant with good notch toughness and can tolerate moderate to lower temperatures.

  • 4140

    4140 is a low alloy known for its fatigue strength, excellent toughness, and good corrosion resistance. It is often used in the aerospace, oil and gas industries for use in shafts, crankshafts, gears, collars, and machinery parts.

  • ABS A & ABS B

    Certified by the American Bureau of Shipping, these ordinary strength steels are used exclusively in the shipbuilding industry. They are purposed for various shipbuilding applications in ship construction.

  • ABS A131 AH36 / DH36 / EH36 / FH36

    ABS A131 AH36, DH36, EH36, and FH36 are marine and offshore steels that are American Bureau of Shipping (ABS) approved for exclusive use in shipbuilding. Compared to the ordinary strength ABS A and B steels, these are all characterized by higher strength capability and are offered in various conditions. For example, AH36 is offered in the control-rolled condition, DH36 in both the control-rolled and normalized condition, and EH36 in the normalized condition.

  • MIL-A-46100

    MIL-A-46100 is a high-hardness armor (HHA) plate approved by the Department of the Army, for use in the the combat and ballistic industry. It is lightweight while demonstrating superior ballistic resistance, and very good formability, weldability, and toughness.

  • MIL-A-12560

    MIL-A-12560 is a high strength rolled homogenous armor (RHA) specialty plate approved by the Material Technology Laboratory, Department of the Army. It provides maximum ballistic protection and shock absorption. It is often used to protect against explosives, including land mines.

  • UL NIJ Ballistic Tested Plate

    UL NIJ Ballistic Tested Plate is used in the military and law enforcement industry and demonstrates excellent wear resistance to meet body armor standards established by the Underwriters Laboratory and National Institute of Justice.

Frequently Asked Questions

  • What is the standard size of steel plate?


    Steel plate is typically stocked in 36″, 48″, and 60″ widths and 96″, 120″, and 144″ lengths. Kloeckner Metals can also provide cut-to-size steel plate to exact customer specification. If you’re already a Kloeckner customer, we invite you to shop steel plate on Kloeckner Direct.

  • How do I calculate the weight of steel plate?


    The weight of steel plate depends on its thickness, width, and length. To calculate the weight of steel plate, please use our carbon steel plate weight calculator.

  • What thickness does steel plate come in?


    Steel plate generally starts at a thickness of 3/16″. Under 3/16″, it is considered sheet, not plate. It is precisely because of plate’s thickness that it is found in structural applications like heavy equipment, construction, bridges, and more. Above 3″, steel plate is known as heavy steel plate. Kloeckner Metals routinely stocks A36 up to a thickness of 16″, but we will supply plate to customer specification, in thickness and other physical properties.

  • What is steel plate used for?


    Steel plate is just one of many types of steel that are commonly offered by steel plate suppliers. Other types include bars, sheets, structurals, pipes, tubes, and more. Steel plate can be further divided into different types—including structural steel plate, HSLA steel plate, abrasion-resistant steel plate, and more—and are selected based on the physical and mechanical properties that result from their unique chemical compositions. You will find steel plate in structural and construction applications, marine and offshore equipment, military applications, and pressure vessels.

  • How is steel plate made?


    Steel plate is made by rolling steel through different sets of rollers until it achieves a desired thickness and specific material properties. Each stage of the rolling process results in a steel plate with a distinct properties and finish.

Services provided to Steel Plate products


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Weld Prep

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Oxy-Fuel Cutting | Flame Cutting

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Heat Straightening

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Plate Flattening

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Stretcher Leveling

With vast investments in the latest stretcher...



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Shot Blasting

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Plate Processing

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Laser Cutting

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Branches featuring Steel Plate products

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Industries served by Steel Plate


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Material Handling

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Trailer and Truck Industry

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Refuse and Recycling Industry

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Resale Industry

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Military and Government

With growing infrastructure needs and strong investments...



Kloeckner is here to supply the North...


Heavy Trucks

With locations across the United States offering...


Heavy Equipment & Construction

Between our long experience in heavy equipment...


Ship Building

Between our state-of-the-art manufacturing facilities and our...


Metal Building

Kloeckner meets and exceeds the needs of...


Oil & Gas

With reliable, advanced, and cost-effective solutions at...


Fabricators & Machine Shops

Kloeckner leads the fabricators & machine shops...



Spearheading processes and products that match the...


Plate Fabrication

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


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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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