Hardox® 550

Hardox^® 550 is specially designed for heavy wear applications and makes a great alternative to 12% manganese steel castings, 500 Brinell wear plate or bimetals. The additional 50 Brinell you gain in hardness, when upgrading from conventional 500 HBW steels, will increase wear life, though not at the expense of crack integrity. Hardox^® 550 is typically used for wear parts in industries like mining, quarrying, mineral processing, earthmoving and recycling.

• Makes a great alternative to grades with a lower hardness, conventional 500 Brinell steel plate, manganese steel castings or bimetals
• Risks of cracking minimized thanks to its high toughness and excellent surface finish
• Get up to 60% longer service life than with conventional 500 HBW plate, while maintaining crack integrity
• Longer service intervals lead to lower maintenance costs and higher productivity
• Shorter delivery time compared to manganese steel castings
• Get thinner yet higher-performing wear liner packages in truck bodies for lower overall vehicle weight and higher payload
• Workshop benefits: Comes already through-hardened, is machineable and weldable, exceptionally clean steel with guaranteed properties

• Wear liners, tailgate liners, liners for apron feeders, crushers, squirt plates, transfer chutes, skip bars, grizzly bars and excavation bucket pads, cutting edges, wear bars, lip shrouds in mining, quarrying and earthmoving.
• Industrial process equipment such as crusher knives, hammers, discs, wedges, shredder rotors, chute liners and hopper liners, ball and SAG mill liners, bolt-on cutting edges, shrouds, vertical and horizontal shaft impactors and gravel washer wear parts.
• Liner plates and other wear parts and components in cement, concrete, steel and energy plants.
• Harvester guide bars in forestry.

The Hardox^® WearCalc app is an easy tool to see how much longer service life Hardox^® 550 can provide. The chart shows relative wear life with Hardox^® WearCalc and magnetite-based iron ore.

Hardox^® 550 can give equipment an extra 60% longer service life compared to a 500 HBW AR plate, depending on the application. Not only will the equipment last longer, but the narrow hardness interval of 525-575 HBW gives a consistent wear life, enabling more precise maintenance planning.

Hardox^® 550 is a genuine alternative to wear parts made of manganese steel. Manganese steel rarely reaches 550 HBW. And if it does, it happens only when exposed to extreme impact wear. For sliding wear, it usually stays at a moderate hardness of 400-450 HBW.

Hardox^® 550 always performs at typically 550 HBW — no matter the type of wear — so your wear parts will last longer. Unlike cast manganese wear parts, you can machine and weld Hardox^® 550, making it easy to produce custom wear parts in standard machines and workshop setups.

Users of standard 500 HBW AR plate or Hardox^® 500 don’t want to give up toughness or workability for an extra 50 HBW. We developed Hardox^® 550 with precisely this in mind. Upgrading to Hardox^® 550 is a simple and straightforward process. You get the additional hardness, and the steel is still easy to process in the workshop thanks to its high toughness.

You can do the upgrade with practically no changes to your designs or workshop routines. You can weld and machine this steel using the same machinery as for a 500 HBW steel.

You can purchase Hardox^® 550 wear steel when and where you need it, thanks to local availability on a worldwide scale. The most common Hardox^® grades and dimensions can be delivered to you directly from an SSAB mill or from nearby SSAB stocks in less than 48 hours. A worldwide source for wear parts in Hardox^® 550 and other Hardox^® grades is Hardox^® Wearparts, our network of more than 550 wear service centers.