NM400 Wear Resistant Steel Plate

Overview of NM400 Wear Resistant Steel Plate

NM400 is a high-strength, abrasion-resistant steel plate specified under the Chinese national standard GB/T 24186. The “NM” stands for “Naimo” (Wear Resistant), and “400” represents its nominal Brinell hardness value of 400 HBW. Engineered to withstand severe abrasive wear in the most demanding industrial environments, NM400 provides an exceptional balance of high hardness, superior strength, and reliable toughness. It is designed to extend the service life of equipment exposed to constant friction, impact, and mineral abrasion.

Shandong Tanglu Metal Material Co., Ltd. supplies premium NM400 plates produced through advanced quenching and tempering (Q+T) heat treatment processes. This thermal processing ensures a uniform, fine-grained microstructure that maintains its wear-resistant properties throughout the entire thickness of the plate. For B2B buyers in the mining, construction, and recycling sectors, our NM400 steel offers a high-yield solution that significantly reduces maintenance costs and equipment downtime by providing 3 to 5 times the wear resistance of standard structural steels.

Key Features and Engineering Advantages

The defining advantage of NM400 is its high surface and through-thickness hardness, typically ranging between 370 and 430 HBW. This extreme hardness provides excellent protection against sliding and impact wear caused by rocks, minerals, and industrial debris. Despite its high hardness, NM400 is specifically alloyed to maintain good cold-bending properties and outstanding weldability. By maintaining a low Carbon Equivalent (CEV), NM400 allows for efficient fabrication in industrial workshops using standard welding procedures with proper preheating.

In terms of fabrication, NM400 demonstrates superior machinability for a high-hardness material. It can be precision-cut using CNC plasma, laser, or waterjet systems, and it responds well to high-speed steel or carbide drilling tools. Every plate is delivered with original Mill Test Certificates (MTC) ensuring precise chemical and mechanical compliance. By choosing Tanglu’s NM400, engineers gain a durable, certified material that ensures the long-term structural integrity and performance of heavy-duty abrasive-handling equipment.

Main Applications of NM400 Steel Plate

NM400 is a foundational material for high-wear components across multiple heavy industries. Its primary application is in the fabrication of liners, blades, and structural parts for mining and quarrying machinery, such as crushers, feeders, and conveyors. In the construction industry, it is essential for the cutting edges and wear strips of excavator buckets, bulldozer blades, and dump truck bodies.

Beyond mining and construction, NM400 is widely utilized in the cement and concrete industries for mixing blades, chutes, and hopper liners. It is also an indispensable choice for recycling and waste management facilities, where it is used in shredders, balers, and sorting equipment. Due to its proven reliability and high cost-effectiveness, NM400 remains the global benchmark for 400 Brinell abrasion-resistant steel plates.