The primary differences between NM400, NM450, and NM500 wear-resistant plates lie in their hardness, processing techniques, welding performance, costs, and market prices.
NM400 has a hardness range of 350–450 HB, whereas NM500 is harder, with a range of 480–560 HB. This means NM500 offers superior wear resistance, making it suitable for more demanding operating environments.
The two types of plates involve different processing techniques, which affect their costs and market prices. Due to the greater difficulty involved in processing NM500, production costs are relatively higher; consequently, its market price is generally higher than that of NM400.

Time：04/08/2026 17:43:21

NM400 (360–440 HBW), offers the best toughness and workability; suitable for operating conditions involving moderate wear and some impact; a cost-effective choice for routine wear applications.
NM450 (420–480 HBW), features 15%–30% higher wear resistance than NM400 and strikes a superior balance between hardness and toughness; the best value-for-money choice for most applications.
NM500 (470–530 HBW), boasts the highest hardness and superior wear resistance, with a service life 1.8–2.5 times that of NM400 under extreme wear conditions. However, it has the lowest toughness and presents challenges—as well as higher costs—regarding processing and welding; it is suitable only for extreme wear environments with low or no impact.
The choice of wear-resistant plate should be based on a comprehensive assessment of wear intensity, impact loads, processing requirements, and budget.

Time：03/08/2026 16:32:55

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