What Is NM450 Wear Resistant Steel Plate?
NM450 is a Chinese standard high-strength abrasion-resistant steel plate with a nominal Brinell hardness of 450 HBW (surface hardness 420–480 HBW), high yield strength (≥950 MPa) and tensile strength (≥1200 MPa), and balanced impact toughness.
Supplied in a quenched and tempered condition, it resists sliding and impact wear, supports standard welding and moderate cold forming with proper parameters.
Typical applications include mining and construction equipment-excavator buckets, bulldozer blades, loader parts, crushers-as well as industrial chutes, hoppers, conveyors, and slurry pipelines subject to continuous friction.
What Does NM450 Mean?
The grade naming rule originates from Chinese industry definition.
NM: Pinyin abbreviation of Nai Mo, directly stands for wear resistance, distinguishing this alloy steel from ordinary carbon structural steel.
450: Represents the rated Brinell Hardness Value (HBW), the core performance benchmark of this wear-resistant plate.
Looking to replace Hardox 450 or AR450 without sacrificing performance? GNEE Steel offers direct mill-tied NM450 supply with full material traceability
- We help you verify hardness and toughness before you commit to bulk orders.
NM50 wear-resistant steel plate Specification
| Product Name | Wear-resistant steel plate |
| Standard | GB/T 24186 |
| Thickness | 4 mm ~ 100 mm or as required |
| Width | 1500 mm ~ 3000 mm or as required |
| Surface | black /Red/coated (or as required) |
| Length | 6mm-1200mm or as required |
| Material | NM450 |
| Shape | Flat sheet |
| Technique | Hot Rolled |
| Packing | Standard sea-worthy packing |
| Price Term | Ex-work, FOB, CFR, CIF, or as Requirement |
| Exports | Russia,Uzbekistan,Kazakhstan,Ukraine Singapore,Indonesia, Canada, African countries Brazil, Brunei ,Thailand,Malaysia, Viet ,Philippines, India etc. |
| Payment terms | T/T, L/C, Western Union |
Key Advantages and Benefits of NM450 Abrasion Steel Plate
Excellent Wear Resistance
Stable hardness range of 420–480 HBW (approximately 3 times that of Q345 structural steel) delivers strong friction resistance against ores, gravel, cement clinker and solid waste. It effectively extends component service life, cutting down spare part replacement frequency and long-term equipment maintenance expenditure greatly.
High Impact Toughness
Different from brittle high-hardness steel, tempered microstructure endows NM450 with reliable anti-impact property (impact toughness ≥24J at -20℃ per GB/T 24186), suitable for harsh working scenarios including mining, material crushing and heavy loading operations without easy fracture under periodic impact force.
Good Weldability
Controlled carbon equivalent (CEV typically 0.41–0.57% for common thicknesses) and optimized micro-alloy design support conventional welding processes after standard preheating treatment, convenient for field equipment assembly and component fabrication for machinery manufacturers.
Cost-Effective Alternative
Compared with Sweden Hardox 450, German XAR450 and American AR450 imported wear steel, NM450 achieves equivalent wear performance with far more competitive raw material and supply costs, greatly lowering overall material procurement budget for industrial projects.
NM450 Steel Specifications: What You Need to Know
Chemical Composition Of NM450 Abrasion Resistant Steel Plate
| 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 |
Mechanical Properties for NM450 High Strength Abrasion Resistant Steel
| Mechanical properties of NM 450 | |||||
| Thickness/mm | ReL /MPa | Rm /MPa | A/% | Hardness/ HBW10/3000 | Impact -20℃ /J |
| 8 | 1250 | 1460 | 16 | 445 | 40 |
| 12 | 1290 | 1470 | 17 | 462 | 43 |
| 20 | 1370 | 1450 | 17 | 473 | 42 |
| 25 | 1230 | 1480 | 16.5 | 465 | 43 |
How Is NM450 Hot Rolled Wear Resistant Steel Plate Manufactured?
Complete standardized production flow: Steel Making → Continuous Casting → Hot Rolling → Quenching → Tempering → Ultrasonic Testing → Finished Product Delivery
Hot rolling stage: Precisely control plate thickness flatness and dimensional tolerance to meet customer size requirements;
Heat treatment core: Quenching realizes high-hardness martensitic structure, tempering eliminates internal stress and improves material toughness;
Strict quality inspection: 100% ultrasonic flaw detection removes internal defects such as pores and inclusions before shipment to guarantee overall plate quality consistency.
Heat Treatment tips：
NM450 steel plate can achieve its best properties only after two key heat treatment processes.
- Quenching: Heat the steel plate to a high temperature (above the critical point), and then quickly cool it in water or oil. This process forms a martensitic structure, which significantly increases the hardness of the steel.
- High-temperature tempering: After quenching, the steel plate is heated to a medium temperature (500-600℃) and kept for a certain period of time before cooling. This step releases internal stress, improves toughness and balances the hardness achieved during quenching.
NM450 Abrasion Resistant Steel Plate Applications in Mining, Construction and Heavy Industry
Mining Equipment：Dump truck cargo liner, jaw crusher liner, excavator bucket liner, ore chute plate, vibrating screen wear plates
Construction Machinery：Excavator bucket, loader bucket lining plate, bulldozer cutting edge, concrete mixer inner lining
Cement Industry：Raw material chute liner, silo lining plate, clinker conveying baffle, grinding machine wear guard plate
Recycling Industry：Shredder wear parts, waste sorting equipment lining, garbage transport container wear plates
Need wear plates cut to size for dump truck bodies or crusher liners? Avoid costly on-site labor and material waste. GNEE offers precision plasma/laser cutting, drilling, and bending services before shipping. We deliver ready-to-install NM450 components directly to your workshop.
[Upload your CAD/DWG drawing for a free processing quote]
- Save 15-20% on fabrication costs.
How to Select the Right NM450 High Hardness Wear Steel Plate?
- Mining general wear parts: Recommended thickness range 12 mm ~ 30 mm
- Crusher liners with strong friction impact: Recommended thickness range 20 mm ~ 50 mm
- Common construction machinery wear components: Recommended thickness range 6 mm ~ 20 mm
- Working conditions with heavy periodic impact: Prioritize NM450E high-toughness grade and appropriately increase plate thickness to improve impact bearing capacity
NM450 Steel Plate vs Hardox 450 vs AR450 vs XAR450 Comparison
|
Steel Grade |
Origin Country |
Standard Hardness |
Core Competitive Advantage |
|---|---|---|---|
|
NM450 |
China |
450 HBW |
Balanced performance with prominent cost advantage, complete industrial supply chain, flexible customized processing and fast delivery cycle |
|
Hardox 450 |
Sweden |
450 HBW |
Global well-known brand, ultra-stable low-temperature toughness, strict international quality standards |
|
AR450 |
United States |
450 HBW |
Mature general abrasion steel, stable quality for conventional mild and medium wear conditions |
|
XAR450 |
Germany |
450 HBW |
Premium comprehensive toughness, excellent structural stability under strong impact abrasion working conditions |
Summary: NM450 serves as the most practical competitive equivalent grade for global buyers who require standard high wear resistance while controlling total procurement costs for mass production projects.
Is NM450 better than AR450?
NM450 reaches equivalent wear performance to AR450 with lower purchase cost for most general industrial working conditions.
Is NM450 cheaper than Hardox 450?
Under the same specification and quality level, NM450 has obvious price advantages over imported Hardox 450.
How Much Is NM450 Wear Resistant Steel Plate?
2026 Current Export Reference Price (FOB China Port)
The mainstream market FOB price of standard NM450 hot rolled wear-resistant steel is USD 630 – 740 per metric ton in the second half of 2026.
- Lower price zone: regular common thickness, large bulk spot orders
- Higher price zone: heavy thick plates, first-class mill raw materials, plus customized cutting and complete test certificates
This figure is only a market reference range. Deep processing, export seaworthy packaging and special inspection demands will cause actual transaction prices to fluctuate accordingly.
Main Factors Affecting NM450 Plate Price
NM450 quotation is affected by multiple key elements: plate thickness and width, total order quantity, original steel mill brand, quenching & tempering processing expense, international raw material price volatility and destination shipping cost. You need to provide specific sizes, drawings and purchase volume to get an accurate official quotation.
For real-time price trends, seasonal fluctuations and bulk order discount rules, please check our dedicated price article: Complete NM450 Steel Plate Price Analysis Guide
Why Choose GNEE Steel?
1. Professional NM450 Processing Capacity
GNEE Steel provides standardized, material-matched processing solutions for high-hardness NM450 wear steel, avoiding cracking and hardening defects during fabrication.
- NM450 Cutting: Support flame cutting for thick plates, plasma cutting for medium plates, and laser cutting for high-precision parts. Strict speed control ensures smooth edges without hardening or cracks.
- NM450 Welding: Follow standard process: 100–200℃ preheating, low-hydrogen electrodes, stable heat input, and slow cooling to eliminate welding cold cracks.
- NM450 Bending: Adopt heating-assisted bending with thickness-matched minimum bending radius to reduce fracture risks for thick plates.
- NM450 Surface Painting: We offer anti-rust primer painting and customized topcoat spraying services for NM450 steel plates. The paint layer effectively isolates air and seawater erosion during long-distance ocean transportation, prevents surface rust and oxidation of steel substrates, and satisfies customers' requirements for surface protection and unified appearance of finished workpieces.
2. Reliable Supplier Strength And Quality Assurance
GNEE Steel is a professional NM450 wear resistant steel plate supplier with complete qualification, strict inspection and mature export capability, fully meeting global industrial procurement standards.
- Complete Certification: Provide official MTC test reports complying with EN10204 3.1, fully traceable for customs and project inspection.
- Batch-by-Batch Inspection: Each batch undergoes hardness test, UT ultrasonic test, and dimensional inspection to guarantee stable quality.
- Full Export Service: Standard seaworthy packaging, complete shipping documents and stable international delivery support.
- Stable Supply & Fast Lead Time: Abundant stock inventory supports fast delivery and urgent project orders.
Ready to secure high-quality NM450 for your next project?
Don't wait for delayed production lines. Send your inquiry now to get:
✅ Direct Factory Price (valid for 3 days)
✅ Wear-resistant processing suggestions (Free engineering support)
✅ Shipping plan within 48 hours
Packaging and Shipping
| Item | Content |
|---|---|
| PACKAGE DETAILS |
Export-compliant packaging; Standard seaworthy package(wooden boxes package,pvc package, or other package) |
| CONTAINER SIZE | 20ft GP: 5898mm(Length)×2352mm(Width)×2393mm(High) |
| 40ft GP: 12032mm(Length)×2352mm(Width)×2393mm(High) | |
| 40ft HC: 12032mm(Length)×2352mm(Width)×2698mm(High) |
FAQ
What is NM450 equivalent to?
NM450 is equivalent to international grades such as Hardox 450 (Sweden, SSAB), AR450 (ASTM standards), JFE-EH450 (Japan), and Dillidur 450V (Germany).
What is the hardness of NM450?
Actual stable hardness range is 410 HBW to 470 HBW with nominal 450 HBW.
Can NM450 be welded?
It supports welding construction with standardized preheating, low-hydrogen electrodes and controlled heat input.
