FAQs & Technical Guides

Hardox is a family of wear-resistant steels for applications involving abrasive material. Specify the product grade, thickness and operating conditions, not just the brand. Hardox 400 properties cannot be generalised to all Hardox grades.

SSAB’s data sheet lists a hardness range of 370–430 HBW for Hardox 400. Check the test method and thickness-dependent conditions in the data sheet; special provisions apply below 2.5 mm. This range does not apply to other grades.

Strenx focuses on high-strength structural applications, whereas Hardox prioritises wear resistance. Selecting a higher-strength product does not replace project calculations. Final grade and thickness selection must consider loads, connections and fabrication conditions.

No. SSAB specifies minimum yield strength of 650–700 MPa for the Strenx 700 family, depending on product and thickness. Use the current data sheet for the exact product being purchased; one value cannot be applied to the whole family.

Yield strength can vary with thickness. For example, the SSAB Multisteel SNL data sheet specifies a minimum of 355 MPa at 5–16 mm and lower minimum values at greater thicknesses. The grade name alone therefore does not describe every mechanical condition.

Grade suffixes and delivery condition identify different technical requirements. For example, S355J0+N and S355J2+N have different impact-test temperatures; +N denotes a normalised delivery condition. Use the complete grade code without omitting suffixes.