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NM400 is high strength wear-resisting steel plates. NM400 has quite high mechanical strength; Its mechanical properties are common low alloy steel plate 3 times to 5 times; Can significantly improve the relevant parts of the mechanical wear patience; Therefore improve the service life of the machine, reduce the production cost. This product surface hardness usually reached 360 ~ 450 HB. Used for mining and all kinds of mechanical engineering in anti-abrasion wearing parts processing and manufacturing for steel structure, etc. NM400 is wear-resisting of a steel plate. NM-said the "resistance" wear-resisting purposes and "ground" word Chinese phonetic alphabet is the first 400 brinell hardness value HB value. (400 hardness value is generalized, domestic NM400 hardness value range 360-420. NM400 wear-resistant steel plate is widely used in engineering machinery, mining machinery, coal mine machinery, environmental protection equipment, metallurgical machinery spare parts, etc. Excavator, bulldozer bucket loader, board, blade plate, side blade plate, the blade. Crusher lining board, leaf. Wear-resistant steel plate delivery status is divided into: coating quenching and tempering-