AR400 Steel AR400 is designed for wear and abrasion applications.Typical hardness of AR400 ranges from 360-444 BHN, which is slightly lower than AR450.Like other wear-resistant steels, it does not have a defined chemical composition, but rather a grade based on hardness. Benefits of AR400 Steel When determining which wear-resistant steel is best for your application, it is important to note that each grade responds differently to many manufacturing processes.AR400 steel plate is ideal for applications that require wear resistance but must be formable and weldable. Because of these properties, it can be used in a variety of different applications. It is particularly suitable for applications where impact or sliding wear may be present. Properties of AR400 Steel In addition to its general properties of formability, AR400 steel has the following mechanical properties while maintaining good wear resistance: Machining = fair Bending = good Corrosion resistance = good Welding = excellent Wear resistance = very good Provides excellent resistance to impact and sliding wear at a moderate cost. Recommended for: Lining of mining and material handling equipment such as dump trucks, material transfer chutes, storage bins, buckets and hoppers