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Materials
Hardox®
Abrasion-resistant quenched and tempered steel manufactured by SSAB, used for high-wear applications.
Hardox® is an abrasion-resistant steel manufactured by Swedish steelmaker SSAB. The main wear plate grades run from Hardox® 400 to Hardox® 600 (about 400 to 600 HBW, Brinell hardness). SSAB also makes Hardox® HiTuf, a tougher grade at a lower hardness, and Hardox® Extreme above 600 HBW. Hardox® combines hardness with toughness and weldability.
In excavator attachments, Hardox® is used for wear plates, cutting edges, and high-impact areas. The most common grades are:
- Hardox® 400: General-purpose wear resistance (400 HBW)
- Hardox® 450: Higher wear resistance than 400 (450 HBW)
- Hardox® 500: Wear resistance for quarry and mining (500 HBW)
- Hardox® HiTuf: Grade for impact loading, with wear resistance
Sieruta Attachments uses Hardox® steel with full material traceability and SSAB certificates.