Hardox 400, 450 & 500 Abrasion-Resistant Steel Plates: Ultimate Wear Solutions for Heavy Industries.
Premium Hardox Series: Engineered for Extreme Abrasion & Impact
Hardox 400, 450, and 500 are quenched-and-tempered (Q&T) abrasion-resistant steels designed to outperform standard AR plates in mining, construction, and recycling. With hardness ranging from 400 HBW to 500 HBW, these steels deliver unmatched wear resistance, weldability, and bendability.
Certifications & Key Advantages
- ISO 9001 Certified: Guaranteed consistency in hardness, impact toughness, and flatness.
- Global Compliance: Meets ASTM A514, EN 10025-6, and JIS G3106 standards.
- Precision Tolerances: Thickness 3–130mm (±0.5mm), width up to 4,500mm.
- Custom Coatings: Optional epoxy or galvanized finishes for corrosion resistance.
Technical Specifications
Chemical Composition (Weight %)
| Grade | Thickness (mm) | C (max) | Si (max) | Mn (max) | Cr (max) | Mo (max) | B (max) | CEV | CET |
|---|---|---|---|---|---|---|---|---|---|
| Hardox400 | 3–8 | 0.15 | 0.7 | 1.6 | 0.3 | 0.25 | 0.004 | 0.33 | 0.23 |
| Hardox400 | 20–32 | 0.18 | 0.7 | 1.6 | 1.0 | 0.25 | 0.004 | 0.48 | 0.29 |
| Hardox450 | 8–20 | 0.21 | 0.7 | 1.6 | 0.5 | 0.25 | 0.004 | 0.47 | 0.34 |
| Hardox450 | 40–50 | 0.23 | 0.7 | 1.6 | 1.4 | 0.60 | 0.004 | 0.59 | 0.36 |
| Hardox500 | 13–32 | 0.29 | 0.7 | 1.6 | 1.0 | 0.30 | 0.004 | 0.62 | 0.41 |
Alloy Design:
- CEV Formula: C + Mn/6 + (Cr+Mo)/5 (optimized for weldability).
- Boron (0.004%): Enhances hardenability during rapid quenching.
- Low Sulfur (0.01%): Reduces weld porosity (AWS D1.1 compliant).
Mechanical Properties
| Grade | Hardness (HBW) | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Toughness (-40°C) |
|---|---|---|---|---|---|
| Hardox 400 | 370–430 | ≥1,000 | 1,250–1,450 | ≥10 | 45J (EN ISO 148-1) |
| Hardox 450 | 430–480 | ≥1,200 | 1,400–1,600 | ≥10 | 40J (EN ISO 148-1) |
| Hardox 500 | 470–530 | ≥1,250 | 1,550–1,750 | ≥8 | 40J (EN ISO 148-1) |
Performance Highlights:
- Hardox 500: 20% higher wear resistance than AR500 in quarry crushers.
- Hardox 450 Tuf: 40J impact toughness for Arctic mining equipment.
- Hardox 400: Ideal for cold-forming dump truck beds and conveyor chutes.
Applications
- Mining: Excavator buckets, crusher jaws, and rock screens.
- Construction: Bulldozer blades, grader edges, and demolition shears.
- Recycling: Shredder rotors, waste compactors, and sorting systems.
- Agriculture: Plowshares, tillage tools, and harvester blades.
Fabrication Guidelines
- Cutting: Plasma/laser with pre-heat (150°C for >25mm thickness).
- Welding: Use low-hydrogen electrodes (E7018) at 100–150°C interpass temperature.
- Bending: Minimum radius = 3x thickness (cold-formed for Hardox 400/450).
- Machining: Carbide tools with 10–15° rake angle for drilling/milling.
Quality Assurance
- Ultrasonic Testing: EN 10160 Class E1–E3 for zero slag inclusions.
- Hardness Mapping: 5-point depth testing (surface to core).
- Certifications: EN 10204 3.1 MTRs, CE/PED compliance.
Industry Innovations
- Hardox HiTuf: Enhanced toughness (60J at -60°C) for extreme climates.
- 3D Profiling: CNC-formed crusher liners with 95% material utilization.
- Eco-Friendly Quenching: 20% lower CO2 emissions vs. traditional methods.
Competitive Advantages
- Lifespan: 3x longer than NM400 in abrasive slurry handling.
- Lead Time: 15–30 days (MOQ 10MT).
- Global Stock: EU, North America, and Asia-Pacific hubs.
Logistics & Compliance
- Packaging: VCI-coated + wooden crates for Ocean Freight.
- Temperature Limits: Avoid service temperatures >300°C.
- Custom Sizes: 3–130mm thickness, 1,500–4,500mm width.
Logical Connectors:
- Comparison: While NM450 is cheaper, Hardox 450 offers better weldability.
- Example: For instance, Hardox 400 is used in dump truck liners.
- Cause-Effect: High chromium (1.4%) boosts hardness in Hardox 450.
Request Technical Datasheets or Factory Samples Today!
Certifications: ISO, ASTM, EN. Global delivery available.
Packing And Delivery
