Comparison of hardox grades is based on hardness, ductility, bendability and the possibility of welding.

1. Introduction

Hardox steel offer a high level of wear resistance, keeping abrasive material from damaging the product. Its hardness also reinforces the plates’ overall strength and ensures maintaining its original shape.

The properties of Hardox steel remain consistent from plate-to-plate. Hardox steel are available in grades from 400 HBW to over 600 HBW and thicknesses from 0.8 mm to 130 mm. All Hardox grades has hardness guarantee across the thickness.

2. Hardox Steel Grades

• Hardox 400

Hardox 400 is a general purpose wear resistant steel with a hardness of 400 HBW. It’s ideal for moderate wear applications that require high toughness, good bendability and outstanding weld ability.

• Hardox 450

Hardox 450 is an abrasion-resistant steel with a nominal hardness of 450 HBW. Hardox450 combines good bendability and weld ability with an option for guaranteed impact toughness.

The products can be used in many different components and structures that are subject to wear. Hardox 450, with an extra 50 Brinell hardness over Hardox 400 grade, provides better dent and abrasion resistance as well as longer wear life, which eventually make greater savings.

• Hardox 500 Tuf

Hardox 500 Tuf is the world’s hardest wear plate with structural properties. It delivers high strength, high hardness and guaranteed toughness in a single wear plate for the most demanding applications. It is well suited for truck and tipper bodies, containers, mining dumpers, buckets and other attachments, agricultural equipment, liners and wear parts. It can perform as a structural material in recycling containers, dump bodies, buckets and other heavy-duty products, even in freezing conditions.

• Hardox 600

Hardox 600 has a nominal hardness of 600 HBW and a high toughness for such a hard steel. Although it is designed for severe wear conditions, Hardox 600 can still be cut and welded, making it an excellent choice for high-performance applications. Hardox 600 is being used in cement plants for concrete, tables and compactors; as liner plates and screed plates in material handling and mineral processing; as liners for stationary concrete mixers; and as hammers and knives in recycling and waste fragmentation.

• Hardox Extreme

Hardox Extreme is the world’s hardest wear plate with a nominal hardness of 60 HRC (Rockwell) and a typical hardness of 650-700 HBW. It is intended for applications with extremely high demands on abrasion resistance, such as liner plates. In glass recycling equipment, Hardox Extreme both reduces lifecycle cost and extends service life without degrading the finished product.

3. Comparison of the Hardox Steel Grades

4. Conclusion

The variety of dimensions and grades make Hardox steel suitable for a wide range of designs and products. Hardox steel keeps getting more versatile over the years with new grades and dimensions are introduced regularly. Understanding the nature of the hardox grade will facilitate the metal fabrication processes. The traditional Hardox wear plate has been complemented with tubes and round bars in the last years.