NM400 High-Strength Wear-Resistant Steel Plate: Durable AR400 Solution for Heavy Machinery.
Engineered for Extreme Abrasion & Impact in Mining and Construction
NM400 is a quenched-and-tempered (Q&T) abrasion-resistant steel plate with a hardness range of 360–440 HBW, delivering 3–5x higher wear resistance than standard low-carbon steel. Designed for excavator buckets, crusher liners, and bulldozer blades, NM400 extends equipment lifespan by reducing downtime and maintenance costs in harsh environments.
Certifications & Key Advantages
- ISO 9001 Certified: Guaranteed consistency in hardness, impact toughness, and dimensional accuracy.
- Global Compliance: Meets ASTM A514, EN 10025-6, and JIS G3106 standards.
- Precision Tolerances: Thickness 5–120mm (±0.5mm), width up to 4,000mm.
- Custom Processing: Laser/plasma-cut profiles, shot-blasted surfaces, or pre-painted finishes.
Technical Specifications
Chemical Composition (Weight %, Max)
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV |
|---|---|---|---|---|---|---|---|---|---|---|
| NM400 | 0.25 | 0.70 | 1.60 | 0.025 | 0.010 | 1.40 | 0.50 | 1.00 | 0.004 | 0.55 |
Alloy Design:
- Carbon Equivalent (CEV): C + Mn/6 + (Cr+Mo)/5 (optimized for weldability).
- Boron (0.004%): Enhances hardenability during rapid quenching.
- Low Sulfur (0.010%): Minimizes weld porosity (AWS D1.1 compliant).
Mechanical Properties
| Yield Strength (Rp0.2) | Tensile Strength (Rm) | Elongation (A5) | Impact Toughness (-20°C) | Hardness (HBW) |
|---|---|---|---|---|
| ≥1,000 MPa | 1,250–1,450 MPa | ≥10% | ≥30J (EN ISO 148-1) | 360–440 |
Performance Highlights:
- 1,450 MPa Tensile Strength: 40% higher than standard AR400 steel.
- 30J Charpy V-Impact: Maintains ductility in subzero conditions.
- Adaptable Thickness: 5mm for lightweight chutes; 120mm for crusher jaws.
Applications
- Mining: Dump truck liners, excavator bucket teeth, and conveyor systems.
- Construction: Bulldozer blades, grader edges, and demolition shears.
- Agriculture: Plowshares, harvester blades, and tillage equipment.
- Recycling: Shredder hammers, waste compactor liners, and sorting machinery.
Fabrication Guidelines
- Cutting:
- Cold Methods: Waterjet, sawing, or abrasive cutting for precision.
- Hot Methods: Oxy-fuel, plasma, or laser with pre-heat (150°C for >25mm).
- Welding: Use low-hydrogen electrodes (E7018) at 100–150°C interpass temperature.
- Bending: Minimum radius = 3x plate thickness (cold-formed).
- Crack Prevention: Post-cut heat treatment at 200–250°C for thickness >30mm.
Quality Assurance
- Ultrasonic Testing: EN 10160 Class E1–E3 for internal defect detection.
- Hardness Testing: Brinell (HBW) measured 1.0–2.5mm below surface (GB/T 231).
- Impact Testing: Longitudinal Charpy V-notch at -20°C (GB/T 229).
- Certifications: EN 10204 3.1 MTRs, CE/PED compliance.
Competitive Advantages
- Lifespan: 4x longer than NM300 in abrasive soil handling.
- Lead Time: 15–25 days (MOQ 1 piece).
- Global Stock: Available in EU, North America, and Asia-Pacific hubs.
Why Choose NM400?
- Cost Efficiency: Reduced replacement frequency lowers TCO by 35%.
- Versatility: Suitable for cold forming, welding, and machining.
- Sustainability: 15% recycled content and low-emission production.
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Certifications: ISO, ASTM, EN. Global delivery available.
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