High-Hardness Abrasion Resistant Steel Plates (NM/AR)
Maximize the service life of your heavy machinery with Runfei Steel Group’s premium abrasion resistant steel. Designed to withstand severe sliding wear and high-impact environments, our wear plates (including NM400, NM450, NM500, and AR equivalents) offer exceptional Brinell hardness and structural toughness. Ideal for manufacturing excavator buckets, dump truck bodies, and mining crushers, browse our certified high-hardness steel inventory below to significantly reduce your equipment maintenance costs.
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Extend Equipment Lifespan with Premium Wear Plates
In the mining, cement, and earthmoving industries, equipment wear and tear leads to costly downtime. Since 1998, Runfei Steel Group has been supplying ultra-durable abrasion resistant (AR) steel plates to global heavy machinery manufacturers. Formulated with precise alloying elements and subjected to advanced quenching and tempering (Q&T) processes, our wear plates offer uniform hardness from the surface deep into the core. By upgrading to our high-strength wear plates, manufacturers can use thinner steel to reduce the structural weight of dump trucks and loaders, thereby increasing payload capacity while maintaining ultimate durability.
Core Grades of Abrasion Resistant Steel (NM Series)
We inventory and process a comprehensive range of Chinese GB standard “NM” (Nai Mo) series steel, which serves as a highly cost-effective and direct equivalent to international AR grades (like AR400 and AR500):
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NM400 (AR400 Equivalent): With a nominal hardness of 400 HBW, it offers an excellent balance of wear resistance, toughness, and cold-forming properties. Widely used for standard excavator buckets and conveyor chutes.
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NM450 (AR450 Equivalent): Provides 50 Brinell extra hardness over NM400, adding significant wear life for sliding friction applications like dump truck bodies and garbage compactor trucks.
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NM500 (AR500 Equivalent): Extreme hardness (470–540 HBW) designed for the most severe wear environments. Ideal for mining crushers, shredder knives, and heavy-duty screening plates.
Advanced Processing for High-Hardness Steel
Abrasion resistant steel is notoriously difficult to cut, drill, and bend. Improper thermal cutting can ruin the steel’s temper and lower its hardness. Utilizing our 300,000-ton heavy-duty processing facility in Tianjin, Runfei Steel provides professional value-added services. We utilize specialized plasma and laser cutting equipment, as well as high-tonnage press brakes, to supply custom-cut and pre-formed wear parts directly to your assembly line.
Frequently Asked Questions (FAQ)
Q: Are Chinese NM series steel plates equivalent to international AR steel?
A: Yes. The Chinese “NM” (Nai Mo) series is manufactured to strict national standards (GB/T 24186) and provides equivalent chemical composition, mechanical properties, and Brinell Hardness (HBW) to globally recognized AR (Abrasion Resistant) brand name steels, offering incredible value for OEM manufacturers.
Q: Do you provide Mill Test Reports (MTR) showing the Brinell Hardness?
A: Absolutely. Complete traceability is guaranteed. We provide official Mill Test Reports (MTR) with every shipment, verifying the exact chemical composition, yield strength, and the crucial Brinell Hardness (HBW) test results.
Q: Can NM400 and NM500 steel plates be welded?
A: Yes. Despite their high hardness, our NM series wear plates have a carefully controlled carbon equivalent (CEV). They can be welded to standard structural steel using conventional welding methods, provided that proper pre-heating guidelines and low-hydrogen welding consumables are used to prevent cold cracking.
