What is meaning of NM400 hot rolled steel plate

NM400 hot rolled steel plate is a kind of wear-resistant steel. What is meaning of NM400 hot rolled steel plate? NM - the "resistance" and "grinding", 400 - the Brinell hardness value of HB. The hardness value 400 is generalized, the hardness range of domestic NM400 hot rolled steel plate is 360-420.

NM400 hot rolled steel plate has high mechanical strength. The mechanical properties of NM400 hot rolled steel plate are 3 times to 5 times that of ordinary low alloy steel plates, and NM400 steel can significantly improve the wear resistance of mechanical parts.

NM400 hot rolled steel plate is suitable for use in manufacture of construction machinery, mining machinery, coal mining machinery, environmental protection machinery, metallurgical machinery, etc.