什么是耐磨钢？

耐磨钢

耐磨钢几乎无处不在，用于道路建设、建筑、农业、采石、采矿、回收利用、水泥和混凝土生产等设备中。也称为耐磨钢是淬火钢，用于获得坚硬的马氏体微观结构。由于硬度高，它们具有很高的机械性能，这使它们能够延长易损件的使用寿命并显著减轻设备的重量。尽管硬度很高，但耐磨钢可以用所有常用方法弯曲、焊接、切割和加工。

AR400、AR450 和 AR500 是具有结构特性的耐磨钢

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AR400 作为一种可靠的多用途耐磨钢脱颖而出，其标称硬度为 400 HBW。它特别适合预计会出现适度磨损但必须具有高韧性、灵活性和可焊性的应用。

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AR450 以其卓越的多功能性和耐磨性以及结构能力而闻名。与 AR400 型号相比，这种钢具有 50 HBW 的硬度优势，增强了其承受磨损和延长使用寿命的能力。硬度的增加不仅增强了材料的强度，而且还提高了其抗凹痕性。值得注意的是，即使在寒冷的环境中也能保持高韧性，使设备能够承受冲击而不会影响结构。

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AR500 标称硬度为 500 HBW，专为需要一定结构性能水平的极端磨损条件而设计。这确保了更长的使用寿命并保持了良好的可加工性和韧性。在磨损是重要因素的行业中，AR500 的常见应用包括生产衬板、灰棒、耐磨棒和各种其他组件。

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Grade	Yield Strength MPa	Brinell hardness HBW	Elongation A	Impact Strength Charpy V 20 J
NM400	1200	≥370	9	17
NM450	1250	≥420	7	17
NM500	1450	≥470	5	-

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AR600 具有卓越的耐磨性

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AR 600 以其 600 HBW 的硬度以及其硬度水平的异常高韧性而著称。这使其适用于最苛刻的磨损条件，但仍能进行切割和焊接。它的应用多种多样，包括在水泥厂中用作模具、桌子和压实机；在物料处理和矿物加工中用作衬板和熨平板；用作固定式混凝土搅拌机的衬板；以及在回收和废物破碎过程中用作锤子和刀具。

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适用于极端条件的 NM400E、NM450E 和 NM500E

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在气候寒冷的地区，建筑机械、自卸车和其他车辆必须在极端的低温条件下运行。因此，耐磨板必须在这些环境中保持超高的硬度和使用寿命。宝钢专门开发了 耐磨 E 系列 以满足寒冷地区耐磨板的使用，确保它们能够在-40摄氏度的条件下满足40焦耳的冲击能量需求。

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常见问题

Is Hardox 500 the same as NM500 wear resistant steel?

They are equivalent grades by nominal hardness. Hardox 500 is SSAB's brand with about 500 HBW surface hardness; NM500 is the Chinese GB standard grade at the same hardness level. Baohui Steel supplies NM400, NM450 and NM500 plates that match Hardox 400/450/500 performance for most wear applications.

What is the difference between Hardox 400 and Hardox 500?

The number refers to nominal Brinell hardness: about 400 HBW versus 500 HBW. Hardox 500 wears roughly 2-3 times longer than Hardox 400 in severe abrasion, but it is less formable. Choose 400 for structures that need bending or welding, and 500 for liners, buckets and dump bodies in mining and quarrying.

Can Hardox 500 / NM500 plates be welded and cut?

Yes. Wear resistant plates can be cut and welded with common methods. Use low-hydrogen consumables, keep heat input low, and preheat according to plate thickness and carbon equivalent. For critical welds, follow the mill's welding recommendations to keep the hardness of the heat-affected zone.

What is Hardox 500 used for?

Typical uses include dump truck bodies, loader and excavator buckets, crusher liners, chutes, hoppers and wear strips for mining, quarrying, cement and recycling equipment - anywhere material flow causes severe abrasion and impact.

How much does NM500 wear resistant steel cost per ton?

Price depends on thickness, width, quantity and the mill. Baohui Steel quotes FOB Shanghai with weekly updated prices. Send us your specification and you will get a firm offer within one working day.