NM450 is a high-strength wear-resistant steel plate with a nominal hardness of 450 HBW. It typically provides a minimum yield strength of 1,100 MPa and a tensile strength exceeding 1,350 MPa, while maintaining a Charpy V-notch impact energy of no less than 48 J at -40°C.
This combination of high hardness and excellent toughness enables NM450 to deliver a service life approximately 3 to 5 times longer than conventional structural steel under the same operating conditions. In addition, its carbon equivalent (CEV) of ≤0.59% ensures good weldability, requiring only moderate preheating for most welding applications, thereby balancing long service life with excellent fabricability. NM450 is widely used for high-wear, heavy-duty components such as mining dump truck bodies, excavator buckets, crusher liners, and other abrasion-intensive equipment.
In the traditional supply system for wear-resistant steel, mainstream wear-resistant steel plates such as NM450 are generally supplied at thicknesses of 6mm and above with a standard width of 1500mm. Products featuring ultra-thin gauges combined with the maximum limit width have long been in short supply in the market.
Are you tired of welding multiple narrow plates and compromising durability? GNEE Steel bridges this gap with ready-to-ship 3×2000×6000 NM450. Contact our team now to confirm stock availability and get a competitive quote.
NM450 Ultra-Thin Limit-Width Wear-Resistant Steel: What Advantages Does It Have Over Conventional NM450?
Outstanding Lightweight Performance
Conventional dump truck bodies and mining equipment bodies are typically manufactured from 16–20 mm thick wear plates, resulting in high vehicle weight. Replacing them with 3 mm ultra-thin, maximum-width NM450 wear plate can reduce the overall vehicle weight by approximately 50% compared with conventional thick NM450 plates, increasing payload capacity while lowering fuel consumption during transportation.
Significantly Longer Wear Service Life
Standard NM450 typically provides a wear life 3 to 5 times longer than ordinary low-alloy structural steel. Through optimized Cr, Mo and Ni microalloying together with controlled rolling and quenching & tempering processes, the ultra-thin grade achieves substantially improved strength and toughness. Under severe impact-abrasion conditions in mining applications, its service life can exceed 10 times that of conventional structural steel, significantly reducing maintenance frequency.
Mechanical Properties Exceed National Standard Requirements - No Brittleness in Ultra-Thin Gauges
Taking the 3 mm ultra-thin NM450 as an example, the premium version is manufactured to internal quality control standards that are significantly stricter than the requirements of GB/T 24186. It delivers a surface hardness of ≥450 HBW, a yield strength of ≥1,250 MPa, a tensile strength of ≥1,500 MPa, and a Charpy V-notch impact energy of ≥35 J at -20°C.
Despite its extremely thin 3 mm thickness, the plate fully maintains 450 HBW wear resistance while achieving significantly higher strength and low-temperature toughness. It effectively overcomes the common shortcomings of conventional thin wear plates, including increased brittleness, low-temperature cracking, and surface delamination under impact, providing greater stability and improved resistance to cracking and deformation in cold environments, high-impact applications, and heavy abrasive service.
Excellent Flatness and Fabrication Performance
The ultra-thin plate is produced using high-precision hot rolling combined with an online leveling process, achieving a first-pass flatness qualification rate of over 90% and excellent plate flatness. Its low-carbon, low-impurity chemical composition ensures stable performance during welding, laser cutting, bending, and other fabrication processes, making it well suited for the mass production, maintenance, and refurbishment of construction machinery and specialized vehicle bodies.
NM450 wear resistant steel Chemical Compositiom
|
NM450 Chemical Compositiom |
|||||||||||
|
Plate |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
B |
CEV |
CET |
|
thickness mm |
max % |
max % |
max % |
max % |
max % |
max % |
max % |
max % |
max % |
typv |
typv |
|
3-(8) |
0.19 |
0.7 |
1.6 |
0.025 |
0.01 |
0.25 |
0.25 |
0.25 |
0.004 |
0.41 |
0.30 |
|
8-20 |
0.21 |
0.7 |
1.6 |
0.025 |
0.01 |
0.50 |
0.25 |
0.25 |
0.004 |
0.47 |
0.34 |
|
(20)-40 |
0.23 |
0.7 |
1.6 |
0.025 |
0.01 |
1.00 |
0.25 |
0.25 |
0.004 |
0.57 |
0.37 |
|
(40)-50 |
0.23 |
0.7 |
1.6 |
0.025 |
0.01 |
1.40 |
0.25 |
0.60 |
0.004 |
0.59 |
0.36 |
|
(50)-80 |
0.26 |
0.7 |
1.6 |
0.025 |
0.01 |
1.40 |
1.00 |
0.60 |
0.004 |
0.72 |
0.41 |
Pro Tip- Chemistry Matters for Thin-Gauge Performance：For 3mm ultra-thin NM450, the strict control of C≤0.19% and B addition (0.0014–0.0030%) is critical. This low-carbon, boron-microalloyed design ensures full hardenability during quenching while maintaining sufficient toughness - a delicate balance that many mills fail to achieve in extreme thin gauges.
Properties of NM450 Wear Resistant Steel Plate
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Tensile Strength | ≥1250 MPa |
| Yield Strength | ≥1000 MPa |
| Elongation | ≥8% |
| Temperature Resistance | -20°C |
| Longitudinal Impact Energy Absorption | ≥24J(at -20°C) |
| Surface Brinell Hardness | 420–480 HBW |
| Brinell Hardness at the Center of the Cross-Section | 375–480 HBW |
Pro Tip - Low-Temperature Toughness Is Not Just a Number：The ≥35J at -20°C for 3mm NM450 means this grade can withstand brittle fracture in cold climates down to -20°C. For applications in Siberian or Canadian winters, we recommend pairing this steel with low-hydrogen welding consumables to preserve joint toughness in sub-zero conditions.
Typical Application Scenarios of Ultra-Thin & Ultra-Wide NM450 (3×2000×6000)
-
Construction Machinery and Special Vehicles
Typical Applications: Lightweight dump truck cargo box liners, truck-mounted crane protective plates, sanitation garbage truck inner liners.
The width of truck cargo boxes is generally around 2000mm. The 2000mm-wide steel plate can be laid as a whole without longitudinal splicing, completely eliminating the risk of material leakage caused by wear-through at welding seams. Compared with the traditional 6mm-thick plates, the 3mm specification cuts the component weight by 50%, which directly increases load capacity and reduces fuel consumption. These two advantages precisely meet the core demands of transport vehicles.
-
Material Conveying and Environmental Protection Equipment：Belt conveyor chute guard plates, screw conveyor blades, dust removal air duct inner liners.
-
Mining and Powder Processing Industry： Vibrating screen edge guard plates, crusher liner plates, batching silo chute inner liners.
-
Agricultural Machinery and Attachments: Harvester conveyor trough guard plates, seeder opener protective plates, bucket side wall plates.
Pro Tip - When to Choose 3mm vs. 6mm Liner?
If your dump truck carries high-density ores (e.g., iron ore, copper concentrate) with sharp edges and heavy impact, 6mm remains safer. But for aggregates, coal, sand, or municipal waste - which cause mild to moderate abrasion - 3mm NM450 is the optimal choice, cutting weight while still delivering 3–5 years of reliable service.
why choose GNEE Steel
With more than ten years of in-depth experience in the wear-resistant steel industry, GNEE Steel has established long-term strategic cooperation with leading domestic wear-resistant steel mills. We can steadily supply NM450 ultra-thin maximum-width wear-resistant steel plates in the specification of 3×2000×6000, delivering one-stop wear-resistant material solutions for customers worldwide.
Stable Spot Inventory & Custom Processing Services
We keep spot stock of 3×2000×6000 NM450 for full-plate pickup. We also provide primary processing services including cut-to-length flattening, laser cutting and slitting according to customer requirements to lower customers' on-site processing costs. Custom special dimensions are available. We can tailor ultra-thin wear-resistant steel plates with non-standard widths and lengths based on customer drawings with stable and controllable lead times.
Full-Process Quality Control & Traceability Assurance
Full Inspection Before Warehousing: Every batch undergoes dimensional verification, surface flaw detection and hardness sampling inspection before storage to ensure all products comply with relevant standards.
Complete Traceability: Each steel plate is marked with a unique heat number. Mill Test Certificates (MTC) from original steel mills are delivered together with goods, supporting official verification from steel manufacturers and third-party authoritative inspection upon customers' request.
Technical Support & Global Delivery
Our professional technical team offers working condition material selection consultation and processing technique guidance, as well as customized material solutions for special abrasion scenarios. We support door-to-port delivery globally with complete customs declaration and clearance documents. Both small-batch samples and bulk orders can be delivered efficiently, and regular spot orders can be shipped within 3 to 7 working days.
Conclusion
As equipment manufacturing continues to upgrade toward lightweight, high-efficiency and long-service-life development, the application scope of ultra-thin wide wear-resistant steel will keep expanding. As a typical product balancing excellent performance and cost efficiency, 3×2000×6000 NM450 will become the preferred choice for numerous medium and light abrasion working conditions.
GNEE Steel will keep focusing on the supply and technical service of special-size wear-resistant steel. Relying on stable mill resources and a full-process quality control system, we provide reliable and cost-effective wear-resistant material solutions for global clients. Feel free to contact our technical and sales teams for material selection consultation, quotation or sample application. We will provide you with one-on-one professional services.
Have more specific application challenges? Our wear-resistant steel specialists are here to help-from grade selection to on-site welding advice. Request a free sample or customized solution via email, and we'll respond within 24 hours.
NM450 wear-resistant steel plate packaging
For the export of NM450 wear-resistant steel plates, multiple packaging solutions are available based on transportation distance, client budget and required protection grade, as detailed below:
| Packaging Type | Core Composition |
|---|---|
| Standard Export Sea Freight Packaging | Fully wrapped with anti-rust paper, sealed with PVC plastic film, fitted with steel end caps/cover plates, bound by steel straps, mounted on wooden or steel-wood frame bases |
| Premium Packaging | Based on standard packaging, added with corrugated cardboard buffer layers, upper & lower steel lining protection, and full steel end caps (instead of simple cover plates) |
| Wooden / Steel Case Packaging | Steel plates or processed components packed inside custom fumigated wooden crates or steel frames |
| No Packing | Secured only with steel straps and timber skids at the bottom without outer packaging |
FAQ
Can 3mm-thick NM450 be bent into a right angle of 90 degrees?
Yes. 3mm NM450 can be cold-bent to 90° at ambient temperature with a minimum bending radius of no less than 9mm (3 times the plate thickness). The best forming performance can be achieved when bending perpendicular to the rolling direction. Preheating is unnecessary under normal circumstances.
Is there a big price gap between 2000mm-wide NM450 and conventional 1500mm-wide NM450?
As a special rolled specification with higher production technical barriers, 2000mm maximum-width steel plate is slightly more expensive than the standard 1500mm width. Nevertheless, it saves labor and material costs for splicing and welding while eliminating hidden risks of weld failure, resulting in a lower comprehensive application cost.
How many times longer is the wear resistance of NM450 compared with ordinary Q355 steel plate?
Under the same abrasive wear conditions, the service life of NM450 is approximately 3 to 5 times that of ordinary Q355 steel plate. The specific service life difference varies depending on abrasive medium, impact force and operating speed.
Can anti-corrosion coating be sprayed on the surface of 3mm NM450?
Yes. Authentic NM450 features uniform surface roughness after shot blasting treatment, which allows direct anti-corrosion treatments such as paint spraying and plastic spraying with strong coating adhesion. It is suitable for outdoor, humid and corrosive service environments.
What is the difference between Hardox 450 and NM450?
NM450: NM450 is a wear-resistant steel grade produced by a variety of manufacturers. It does not have a specific brand name associated with it. Hardox 450: Hardox 450 is a brand of abrasion-resistant steel manufactured by GNEE Steel, a Swedish steel company. Hardox is a well-known and widely used brand in the industry.
What is NM450 equivalent to?
Hardox 450.NM450 is equivalent to international grades such as Hardox 450 , AR450 (ASTM ), JFE-EH450 (Japan), and Dillidur 450V (Germany).
