NM500 AR500 Wear Resistant Steel Plate
NM500 AR500 Wear Resistant Steel Plate
NM500 AR500 Wear Resistant Steel Plate
NM500 AR500 Wear Resistant Steel Plate

NM500 AR500 Wear Resistant Steel Plate

Naming :N is the first pinyin letter of "resistant" in "wear-resistant".
M is the first pinyin letter for "wear" in "wear".
500 is the Brinell Hardness number HB value. (500 hardness value is a broad sense, the domestic NM500 hardness value is about 500.)
NM500 wear-resistant steel plate is widely used in engineering machinery, environmental protection machinery, metallurgical machinery, abrasive tools, bearings and other product parts.

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Product Introduction

NM500 AR500 Wear Resistant Steel Plate

Heat treatment of M500 steel plate

Heat treatment includes several steps such as annealing, normalizing, quenching, tempering and tempering. Each step has different temperature, time and cooling rate requirements to achieve different results. And NM500 steel plate heat treatment tempering (quenching + tempering) state.

a, tempering: steel before leaving the factory by high temperature tempering heat treatment, this delivery state is called high temperature tempering state. The tempering temperature of high temperature tempering is high, which is conducive to completely eliminating internal stress, improving plasticity and toughness, and carbon structure, alloy steel, and structural steel to ensure hardenability can be delivered in high temperature tempering state. Some martensitic high-strength stainless steel, high-speed tool steel and high-strength alloy steel, due to high hardenability and the strengthening effect of alloying elements, often in quenching (or tempering) after a high temperature tempering, so that the carbide in the steel is properly gathered, the carbide particles are coarse tempered sortenite structure (similar to the nodulating annealing structure), so that the carbide particles are relatively large tempered sortenite structure. The steel in this delivery condition has good machinability

b, quenching: heating to the temperature above the phase change point, rapid cooling process. Increase the hardness of the material, but reduce the toughness.

Chemical composition

ingredient	C	Si	Mn	P	S	Cr	Mo	Ni	Bt	CEV
nm500	≤0.38	≤0.70	≤1.70	≤0.020	≤0.010	≤1.20	≤0.65	≤1.00	0.005-0.006	0.65
nm500	130	2	7	7	6	1	7	5	1

Mechanical property

mark	thickness	strength of extension	ductility	—20℃Impact work (longitudinal）AKV/J	Brinell HardnessHBW	cold bend
NM500	6～60	—	—	≥24	480～525	Sample width B=30MM bending Angle 180° Bending center diameter dw4n