AR400 / AR450 / AR500 Plate


High carbon abrasive resistant alloy steel plates generally offer good resistance to sliding and impact abrasion. The high carbon content in the alloy increases the hardness and toughness of the steel, making it an ideal material for applications that require high impact or high abrasion resistance.  It is possible to get high hardness with a high carbon steel, and the steel will have good resistance to penetration.  However, the wear rate will be rapid compared to heat treated alloy plate because high carbon steel is brittle, so particles can be more easily torn from the surface. As a result, high carbon steels are not used for high wear applications.

High carbon steel alloys are especially suited for use in the mining, wood products, and material handling industries.  Applications include dump truck bottoms and sides, liners for chutes and dryers, gravel crushers, tree cutter blades, wear plates, and vibrating conveyors.

Because these plates are ordered to Brinell hardness, no mechanical properties, such as tensile strength or yield strength are guaranteed.

AR400, AR450 and AR500 plate are abrasion resistant (AR) quenched and tempered alloy steels. This grade of alloy steel exhibits high abrasion resistance and hardness. The addition of carbon and manganese coupled with quenching and tempering increase the hardness of the steel and create a durable, impact-resistant surface. However, as hardness increases, formability and the ability to easily machine and weld the alloy decrease. Special machining processes are needed to prevent work hardening and chipping during manufacturing.


AR400, AR450 and AR500 plate are used in applications where abrasive materials such as grains, coal, ore, cement, gravel, light aggregate, and earth are being handled. It is a common material for conveyors, chutes, linings, hoppers and handling equipment in the materials handling and mining industries.

Abrasion resistant steels are not intended for structural applications. These steels should not be used for structural or main load-bearing members because of the possibility that brittle fracture may occur in these high hardness steels at the high stress levels encountered in such applications.