Abrex 400 Plate is a premium abrasion-resistant alloy steel product—part of Nippon Steel’s ABREX™ series—engineered for heavy-duty wear environments such as mining, material handling, and construction. With a Brinell hardness typically around 400 HBW (often 360–440 HBW, and sometimes specified at 415 BHN), it delivers roughly three times the abrasion resistance of ordinary mild steel.... https://www.wearplates.co.in/abrex-400-plates-abrex-400-equivalent.html