Description

Technical Parameters

Products Description

NM500 is a standard high-strength wear-resistant steel plate. "NM" stands for "Nai Mo" (the Chinese word for "wear-resistant"), while the number "500" indicates that its nominal Brinell hardness (HBW) falls within the 500 grade range.

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Product Features

Excellent Wear Resistance

The surface Brinell hardness typically reaches 470-530 HBW. Its wear resistance is 4-6 times that of ordinary structural steel plates, effectively extending the service life of wearing parts in equipment.

Impact and Fracture Resistance

Through a special heat treatment process (quenching + tempering), the material maintains high hardness while exhibiting excellent impact resistance and fracture toughness.

Good Workability

It supports conventional processing such as cutting, bending, and welding. Low-hydrogen welding processes and preheating measures are recommended.

High Flatness

Advanced rolling equipment ensures the flatness of the plate profile, facilitating subsequent blanking and application.

Quality Assurance

Certifications: We provide complete NM500 steel certificates and inspection reports, meeting international quality standards.

Traceability: Each plate is stamped with grade, heat number, and dimensions.

Inspection: Third-party inspections (SGS, BV) are welcome at our loading port.

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Typical Mechanical Properties & Chemical Composition

Parameter	Typical Value
Hardness (HBW)	470 – 530
Yield Strength (MPa)	≥ 1200
Tensile Strength (MPa)	≥ 1450
Elongation (%)	≥ 7
Impact Test (-20°C)	≥ 24 J
Carbon Equivalent (CET)	Suitable for welded structures

why choose us?

why choose us?

Stock Availability: We maintain 5,000+ tons of NM500 Steel in standard sizes (6m, 9m, 12m) ready for immediate dispatch.

Custom Cutting: We offer profile cutting, beveling, and services to save you fabrication time.

Fast Logistics: Efficient shipping via break bulk or container to major ports worldwide (Rotterdam, Houston, Singapore, Dubai).

Competitive Pricing: Direct mill cooperation means no middlemen markups.

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User Evaluation

We used ordinary steel plates for our dump truck bodies, and they wore through in just three months. After switching to NM500, the same truck body has been running for 14 months – the floor and side plates are still in good condition. Service life increased by more than 4 times, and maintenance costs dropped significantly. Very satisfied.

Mr. Zhang

Purchasing Director, Mining Equipment Company

Our mixer blades and liners used to be replaced every two months, each time halting production. With NM500 steel, the first maintenance was needed only after nine months of continuous operation. The hardness is outstanding, and the material is easy to work with – flame cutting and drilling went smoothly.

Mr. Li

Equipment Supervisor, Large Concrete Batching Plant

Wear on grabs and chutes has always been a headache. NM500 strikes a great balance between hardness and toughness – no cracking under the impact of bulk ore. Plus, your cut‑to‑size service allowed direct installation upon arrival. Very efficient.

Mr. Wang

Technical Manager, Port Logistics Company

FAQ

01.Can NM500 be bent?

Yes, but the bending radius should be larger than that of ordinary steel plates. Generally, a minimum bending radius of ≥ 6–8 times the plate thickness is recommended (e.g., R60–R80 for 10 mm plates). Additionally, the bending direction should preferably be perpendicular to the rolling direction. If the bending angle is very small or cold bending is required, preheating is recommended, or please consult our technical staff.

02.How much worse is the wear resistance of NM500 compared to ordinary Q345 steel plates?

Under sliding and impact wear conditions, the wear life of NM500 is 4 to 6 times that of ordinary Q345 (16Mn) steel plates. The exact multiple depends on the type of abrasive, the impact angle, and the pressure.

03.Can NM500 be welded? What precautions should be taken?

Yes, it can be welded. We recommend using a low-hydrogen welding process (such as E7015 or E7016 electrodes, or ER70S-6 solid wire with gas shielding). Depending on the plate thickness, preheating (typically 100–200°C) is required, and interpass temperatures must be controlled. Slow cooling is recommended after welding. We can provide detailed welding procedure specifications.

04.Does NM500 steel rust? Is it stainless steel?

NM500 belongs to carbon alloy wear-resistant steel rather than stainless steel, it will rust when exposed to humid air, rainwater or seawater, clients can choose anti-rust oil coating before delivery, export-grade VCI anti-rust packaging or surface paint spraying after processing to achieve anti-rust protection.

05.How to store NM500 plates to avoid rust & deformation?

Store NM500 plates in dry indoor warehouses and avoid outdoor storage under rain, flatly stack plates on steel support blocks without over-high stacking to prevent bending deformation, keep the original anti-rust oil and VCI packaging intact before use and separate the steel plates from acidic chemical raw materials.

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