What's the NM400 hardness?

NM400 is a wear-resistant steel plate with a very high mechanical strength. The mechanical performance of NM400 steel plate is 3 to 5 times that of ordinary low alloy steel plate; it can significantly improve the wear resistance of mechanical related parts. Therefore, the service life of the machine is increased and the production cost is reduced. The surface hardness of NM400 steel products usually reaches 360-450 HB. NM400 wear-resistant steel is used for processing and manufacturing of wear-resistant wearing parts for mining and various construction machinery.