NM450, NM indicates wear resistance, and 450 indicates that the average Brinell hardness is about 450. NM450 steel is widely used in metallurgical industry, road construction industry, sand mill barrel, blade, U-shaped dump truck, various cargo yards, wharf mechanical parts, bearing structural parts, railway wheel structural parts, rolls, etc.
The defects such as bubbles, cracks and looseness formed in the pouring process of NM450 wear-resistant plate can also be eliminated under high temperature or high pressure to restore its good quality. At present, wear-resistant plates have the advantages of leading technology, mature production process and large market share in the world. Throughout the classification of wear-resistant steel plates, the types of products under wear-resistant steel plates can be divided into NM400, NM450, NM500, NM550 and NM600 according to their hardness.
Heat treatment of NM450 steel plate: high temperature tempering, quenching and tempering.
Performance: yield above 950, tensile strength above 1180
Delivery status of NM450 steel plate: steel plate shall be delivered in quenching, quenching+tempering, TMCP+tempering, tempering or hot rolling status.
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