Global ꞏ July 2019

Shredder grating with extended service life

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Description of the case

The grates are used for aluminium cans recycling.

Originally the grates were cut / fabricated from astralloy V plate. At that time the grates were not hardfaced and overlayed with tungsten carbide. The grates have been redesigned to be cut from

Hardox® 450 steel plate and hardfaced with complex carbide overlay.

Grates Original Design ‐Astralloy V Plate / No Overlay = 3,000,000 Lbs/ 1.360.777 kg  recycled aluminum before failure

Grate redesign ‐Hardox® 450 plate / complex carbide overlay = 70,000,000 Lbs/ 31.751.465 kg  recycled aluminum before failure



Case details

Key success factors

Improved service life: 20 times

New solution
Hardox® 450
Old solution


Industry and wearpart
Recycling , Shredders , Screens