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Introduction to Abrasion-resistant Steel Plate (AR Plate)

What’s AR Plate?

Abrasion Resistant Steel Plate (AR plate) is a special plate product of a high-carbon alloy steel plate, which is mainly used in work that will cause large-area wear. Abrasion Resistant Steel Plates are using surface welding to form one or more layers of alloys with higher hardness, weather resistance, and higher wear resistance on the surface of low carbon steel or low alloy steel with better plasticity and toughness. The thickness of this alloy wear-resistant layer is generally 1/3 to 1/2. It is to add alloys such as carbon, manganese, nickel, chromium, and boron to the steel plate so that the hardness and toughness of the steel plate are relatively improved. Adding carbon can increase the hardness of the steel plate, but if we add too much carbon to the steel plate, it will become brittle and reduce the tensile strength. After processing, wear-resistant steel plates are mainly divided into three types: general-purpose, impact-resistant, and high-temperature resistant steel plates.

Commonly used in:

As the abrasion-resistant steel plate mainly has high wear resistance and good impact performance, it is suitable for welding, cutting, and bending. According to its materials, it is very cost-effective, so it has been welcomed by the public in recent years. It is widely used in industrial fields with more extreme environments, such as heavy industrial equipment, mining industry, electric power, agriculture, construction industry, and cement industry. This kind of abrasion-resistant steel plate is very convenient and time-saving in the maintenance process. We can use welding or bolt connection to connect with other structures.

Quenching and tempering process

In AR steel plates, the hardness is mainly changed by quenching and tempering. We use quenching to change the grain structure of the steel plate. First, after heating the steel plate at a high temperature for a while, cold water is used to quickly cool it to change the composition of the steel plate and form a crystal structure inside, which increases the hardness and toughness of the steel plate. The other process is tempering. Tempering means reheating the quenched steel plate and then cooling the steel plate at room temperature. Such a process will destroy the crystals produced in the quenching process of the steel plate, but after a long cooling process, the crystal structure will be restored, and its ductility will be increased and a part of the previous hardness will be maintained.

According to their hardness, abrasion-resistant steel plates can be divided into AR400 and AR500.

The difference between AR400 and AR500

Abrasion-resistant steel plates are often used in working environments that are subject to a lot of wear. The biggest difference between AR400 and AR500 is their hardness. AR stands for abrasion resistance. The following numbers (400 and 500) represent their hardness (Brinell BRN is the unit of steel hardness). AR400 is high-carbon alloy steel. Although its hardness is lower than AR500, its formability is relatively high. AR400 is suitable for heavy machinery and equipment such as excavator buckets. The AR500 has a medium carbon content and has good wear resistance and toughness. The difference from AR400 is that AR500 is most commonly used to resist resistance and toughness, so AR500 is often suitable for use in manufacturing, mining, etc.

Characteristic of AR Plate

The advantages of abrasion-resistant steel plates are as follows:

1) Good wear resistance

Since the abrasion-resistant steel plate has a layer of alloy wear-resistant layer on the outside, and the composition of this layer of alloy wear-resistant layer contains chemical elements such as carbon and chromium, it makes its hardness and wear resistance twice as high as that of ordinary steel plates. about.

2) Strong impact resistance

According to what we mentioned above, there are mainly two layers of abrasion-resistant steel plates, and the substrate is low-carbon steel or low-alloy steel plate and an alloy wear-resistant layer. The outer alloy wear-resistant layer can be used to resist the wear of the wear medium, and the inner substrate can withstand the load of the medium, so it can achieve good impact resistance. At the same time, it can withstand the impact and wear of the high drop hopper in the material conveying system.

3) Good heat resistance

Adding vanadium, molybdenum and other alloys to the alloy wear-resistant layer can increase the heating degree of the steel plate. Approximately can withstand high temperature wear ≤800℃.

4) Superior corrosion resistance

Because the alloy layer of the abrasion -resistant composite steel plate contains a lot of metallic chromium, it has better rust and corrosion resistance.

5) Convenient processing performance

Abrasion-resistant steel plates can be processed into various industrial parts by cutting, bending, welding, etc. according to the needs of the project.

Abrasion-resistant steel plates have higher hardness than ordinary steel plates and have stronger wear resistance and corrosion resistance. Suitable for use on surfaces that are often subject to wear and erosion. I hope that the above content can help everyone to better understand the characteristics and structure of abrasion resistant steel plates. If you have any questions about abrasion-resistant steel plates or want to purchase it, you can contact us at 011-7000 7687 or email to Any enquiry for building materials, metal products, mechanical components and engineering services, etc., can consult MecHero. MecHero has a wide range of engineering services, which can help you solve your needs all at once.

(Photo credit: Pixabay)

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