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AR400 Wear Resistant Steel Plate

Wearalloy AR400 Steel Plate

If your application requires superior resistance against impact and wear, then the AR400 steel plate is an excellent solution. As an astm ar steel plate and abrasion resistant 400 steel supplier, Ford Steel provides quality steel in a variety of grades and thicknesses at a competitive price. We stock and supply large quantities of Wearalloy AR400 steel ready to be used in a wide variety of applications, and our team of representatives is here to find you the best steel plate option that best fits your needs. 

388-430 BHN

Wearalloy 400 is a heat treated, quenched and tempered, thru hardened alloy steel for use in impact and abrasion applications.


Wearalloy 400 Bars are hot rolled, heat treated alloy steel and designed for applications where shock and abrasion are a factor. All bars are in 20 foot stock lengths with a 360-420 Brinell hardness.

AR400 steel plate

What is Wearalloy AR400 Steel?

AR400, also known at Ford Steel as Wearalloy 400, is a high-carbon steel with a nominal hardness of 400 and a minimum hardness on the Brinell scale of 360 to 440. Abrasion resistant steel is created by quenching and tempering forged steel plates. Quenching occurs by bringing the steel to a high temperate, between 1,500 and 1,650F, then is quickly cooled with water. During the tempering process, the steel is re-heated again below-critical temperature from 300 to 700F then is cooled to room temperatures. The quenching process creates a crystal structure within the steel that increases the hardness, while the tempering increases the steel's overall durability. The quenching and tempering process change the grain structure to increase the toughness and formability that result in a through-hardened material.

Sizes Offered

At Ford Steel, we house a variety of AR400 steel plates and bars in different sizes. The thicker the size, the more impact resistant the steel has.

  • Thickness: 1/8” thru 4”
  • Widths: 48” thru 96”
  • Lengths: 96” thru 288”

Benefits of Wearalloy AR400 Steel

The AR400 steel plate is excellent for applications that weldability and formability are a must. The steel plate is versatile, and it can be cut to fit tighter spaces. Abrasion resistant 400 steel is proven to have the best-prolonged service life where abrasion is the cause of failure. Additional benefits AR400 steel offers that include:

  • Three times the strength as mild steel
  • Low cost
  • Reduces maintenance costs
  • Wear-resistant for temperatures under 250°C
  • Through-hardness


Mang. (max)1.55
Phos. (max).025
Sulphur (max).005
Chrome (max).55
Nickel (max).35
Moly (max).55
Hardness (BHN)388-430
Yield (psi.)156,000
Tensile (psi.)194,000
Elongation in 2”19% - 23%
Color CodeYellow/Red

Requirements for AR400 Steel

Our AR400 steel plates meet all flatness and thickness requirements the 50% standards that are specified in ASTM A-6. All of the mechanical properties for the abrasion resistance steel matches the ASTM A370.

Available Services:

Wearalloy AR400 can be machined or drilled with high speed carbide tools at low speeds. As the hardness level of the plate increases, it is necessary to decrease the cutting speed and feed depth.

For welding Wearalloy plate, we recommend that low hydrogen electrodes be used: such as E-70XX, E-80XX , E-90XX , E-10XX , E-11XX. As conditions warrant, pre-heating is recommended on all thicknesses.

Wearalloy AR400 can be sheared or punched in thicknesses up to 1/4". Flame cutting is recommended on thicker plate and on our Wearalloy 450 and 500.

Wearalloy AR400 can be cold formed in a press brake or rolls. At sharper bends, forming should be performed with the axis of bend at right angles to the rolling direction or cross grain of the plate. Remove rough edges on plate by grinding prior to forming. It is necessary to allow for a bending radius of 3 to 5 times that of ordinary steel. 

Please contact our engineering department for quotes on any fabrications requiring our wear resistant steels.

ar steel for mining

Common Industries and Applications

Due to AR400 steel’s unique strength, it is used in common industries that deal with impact or sliding abrasion. The abrasion resistant steel is found in several industries such as mining, aggregate, construction, pulp & paper, and cement. 

Aggregate, Construction and Mining Applications

  • Drag Slat Conveyor Liners
  • Asphalt Plant Ductwork
  • Chute Liners
  • Scraper Liners
  • Hopper Liners
  • Cutting Edges
  • Loader Bucket Liners
  • Truck Bed Liners
  • Mold Board Liners
  • Crusher Liners
  • Hammers
  • Feeders
  • Transfer Points
  • Rock Box Liners
  • Shovel Bucket Loners
  • Drag Line Bucket Liners
  • Underground Miners
  • Cone Crusher Main Frame Liners
  • Screen Decks
  • Jaw Crusher Cheek Plates
  • Skid Plates
  • Screed Plates

Pulp and Paper Industry Applications

  • Chain Flights
  • Hammermill & Hog Parts
  • Chipper Hoods
  • Flatbacks
  • Chip Feeders
  • Jack Ladders
  • Chain Rub Bars
  • Chain Ways
  • Fan Blades
  • Cyclone Liners
  • Transition Sections
  • Screw Conveyors
  • Bark Chutes
  • Debarker Arms
  • Flumes

Why Ford Steel?

Founded in St. Louis in 1945 as a wear resistant steel company, Ford Steel specializes in providing a proven solution to your specific wear problems. Now, as a leading AR400 steel supplier, we will help you find the solution you need on everything from crusher to truck bed liners and more. We will work with you to improve your business by providing high-quality AR400 steel products, excellent service, competitive pricing, and prompt delivery.

Contact Us Today
Ready to get started? 1-800-325-4012