Composition & metallurgy

Low- to medium-carbon alloy steels using Mn, Cr, Ni, Mo and B to achieve through-thickness hardenability while retaining usable toughness.

Common grades and standards

Commercial hardness classes commonly include AR400, AR450, AR500 and higher. Well-known proprietary families include Hardox and comparable mill grades; proprietary names are not universal interchangeable standards.

Applications

Dump bodies, mining equipment, buckets, liners, crushers, hoppers, chutes, recycling machinery and earthmoving equipment.

Engineering characteristics

Hardness is only one selection parameter; impact toughness, bendability, weldability, thickness, service temperature and abrasion mechanism also matter.

Known manufacturers and producer regions

Sweden — SSAB; Europe — Dillinger and other quenched-and-tempered plate producers; Japan — Nippon Steel, JFE; China — major heavy-plate mills; India — JSW and other specialty plate suppliers; global distributors stock multiple proprietary AR brands.

Before specifying or purchasing

Confirm governing standard and edition, product form and dimensions, delivery/heat-treatment condition, mechanical properties, toughness, welding requirements, corrosion or wear environment, inspection/NDT, traceability and mill test certification. Manufacturer capability varies by plant and product line.

Element Folio engineering reference. Product names may be trademarks of their respective owners; manufacturer examples are indicative and should be verified against current mill catalogues.