The wear-resistant steel grades can be divided into NM400, NM450, NM500, NM550 and NM600 according to hardness.
Heat treatment of NM450 wear-resistant steel plate: high temperature tempering and quenching+tempering.
Chemical composition of NM450 steel plate:
C≤0.26, Si≤0.70, Mn≤1.60, P≤ 0.025, S≤0.010, Mo≤0.50, Cr≤1.50, Ni≤0.50, B≤0.004
Mechanical properties of NM450 wear-resistant steel plate:
Tensile strength 1020
Yield strength 1140
Impact energy 24J
Elongation 18
Brinell hardness 430-475HBW
Bubbles, cracks, looseness and other defects formed during casting of NM450 wear plate can be eliminated under high temperature or high pressure.
NM450 wear-resistant steel plate is widely used in engineering machinery, mining machinery, coal mining machinery, environmental protection machinery, metallurgical machinery, abrasives, bearings and other product parts.
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