NM500 Ultra-High Hardness Abrasion-Resistant Steel Plate: Premium Alloy for Extreme Wear Applications.
Engineered for Mining, Quarrying & Heavy Machinery
NM500 wear-resistant steel plate is a quenched-and-tempered (Q&T) alloy with a minimum surface hardness of 470 HBW, designed to outperform standard AR450/500 grades in high-stress abrasive environments. Combining exceptional impact toughness (≥24J at -20°C) with 1,250 MPa tensile strength, NM500 extends equipment lifespan by 3-5x in ore processing, mining buckets, and cement crushers.
Certifications & Key Advantages
- ISO 15601 Compliance: Certified for weldability and crack resistance.
- ASTM A514 Equivalent: Exceeds EN 10025-6 standards for structural integrity.
- Precision Tolerances: Thickness 6–150mm (±0.5mm), width up to 3,800mm.
- Global Compliance: Meets JIS G3106, GB/T 24186, and AS/NZS 3678.
Technical Specifications
Chemical Composition (Max Weight %)
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Ti | B | CEV |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NM500 | 0.38 | 0.70 | 1.70 | 0.020 | 0.010 | 1.20 | 1.00 | 0.65 | 0.050 | 0.0006 | 0.65 |
Alloy Design Philosophy:
- High Carbon (0.38%): Optimizes surface hardness for rock/gravel abrasion.
- Boron (0.0006%): Enhances hardenability during quenching (JIS G4057).
- Low Sulfur (0.010%): Reduces hot cracking in high-heat welds (AWS D1.1).
Mechanical Properties
| Yield Strength (Rp0.2) | Tensile Strength (Rm) | Elongation (A5) | Impact Toughness (-20°C) | Hardness (HBW) |
|---|---|---|---|---|
| ≥1,250 MPa | 1,450–1,700 MPa | ≥7% | ≥24J (ISO 148-1) | 470–550 |
Performance Highlights:
- 1,700 MPa Tensile Strength: 40% stronger than standard NM400 plates.
- 24J Charpy V-Impact: Maintains structural integrity in subzero Arctic operations.
- Custom Sizes: 6–150mm thickness, plasma-cut to ±2mm tolerance.
Applications
- Mining: Dump truck beds, excavator bucket liners, and trommel screens.
- Cement: Clinker crushers, raw mill liners, and conveyor chutes.
- Construction: Bulldozer blades, grader edges, and demolition equipment.
- Agriculture: Plowshares, harvester blades, and tillage tools.
Fabrication & Processing
- Cutting: Laser/plasma/oxy-fuel with pre-heating (150°C for >25mm).
- Welding: Use low-hydrogen electrodes (E7018) with 100–150°C pre-heat.
- Bending: Minimum radius = 5x plate thickness (hot-formed at 850–900°C).
- Machining: Carbide-tipped tools required for drilling/milling.
Quality Assurance
- Ultrasonic Testing: EN 10160 Class E3/S3 for zero internal defects.
- Hardness Mapping: 5-point depth testing (surface to core).
- Certifications: Mill test reports (EN 10204 3.2), CE/PED compliance.
Industry Innovations
- Hybrid Cladding: NM500 bonded to SS400 mild steel for cost efficiency.
- 3D Profiling: CNC-formed curves for crusher jaws and shredder rotors.
- Eco-Quenching: Low-emission heat treatment reduces carbon footprint by 15%.
Competitive Advantages
- Lifespan: 5x longer than AR450 in iron ore processing.
- Lead Time: 20–30 days.
- Global Stock: Available in EU, North America, and Asia-Pacific hubs.
Logistics & Compliance
- Packaging: VCI-coated + edge protectors for Ocean Freight.
- Temperature Warning: Avoid service temperatures >300°C.
- Custom Coatings: Optional epoxy (EP) or polyethylene (PE) finishes.
Product Show
Supplier of various types of carbon steel
Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.
