HarderPlate® 400bhn, 450bhn & 500bhn hardness (AR) Abrasion Resistant Steel, by Raptor. Mining, quarry, buckets, liners, truck bodies for all makes and models of equipment. Laser Scanned by Raptor for a perfect fit. In stock in Edmonton, Barrie, Salt Lake City, Arequipa and Belo Horizonte. raptor@raptormining.com