Description
Product Description AR450 Wear Plate
AR450 Steel Plate is a high-strength, abrasion-resistant steel plate designed to withstand demanding applications where wear and tear are significant. Manufactured with advanced metallurgical techniques, AR450 combines superior hardness, high tensile strength, and excellent toughness. This makes it an ideal choice for industries such as mining, construction, agriculture, and heavy machinery manufacturing. In this article, we delve into the technical details, specifications, and applications of AR450 Steel Plate, highlighting why it is a preferred material for heavy-duty applications.
Key Properties of AR450 Steel Plate
- Hardness: AR450 steel has a nominal hardness of 450 Brinell Hardness (HBW), providing excellent resistance to abrasion and impact.
- High Tensile Strength: It boasts a tensile strength range of 1400 – 1650 MPa, ensuring durability under heavy mechanical stresses.
- Toughness: AR450 exhibits exceptional toughness, making it suitable for applications requiring resistance to impact in harsh environments.
- Weldability: Despite its hardness, AR450 can be welded using appropriate preheating and post-weld cooling techniques.
- Machinability: It supports processes such as cutting, forming, and drilling, albeit with specialized tools to counter its hardness.
AR450 Steel Plate Dimensions
- Thickness : 3-130mm
- Width : 500-3000mm
- Length : 1000-12000mm
AR450 Steel Properties
AR 450 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.26 - 0.30 |
| Manganese (Mn) | 1.30 - 1.70 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Silicon (Si) | 0.50 - 1.00 |
| Chromium (Cr) | 0.40 - 0.60 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.20 |
| Vanadium (V) | ≤ 0.10 |
AR 450 Mechanical Properties
| Property | Value |
|---|---|
| Hardness (BHN) | 450 |
| Yield Strength (MPa) | 1,380 - 1,550 |
| Tensile Strength (MPa) | 1,600 - 1,750 |
| Elongation (in 50 mm) | 12% - 14% |
| Impact Toughness (J) | Variable; typically good |
AR 450 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | ~7.85 |
| Modulus of Elasticity (GPa) | 210 |
| Thermal Conductivity (W/m·K) | 50 |
| Specific Heat (J/kg·K) | 460 |
| Melting Point (°C) | ~1,540 |
Standards and Certifications
AR450 Steel Plate complies with international standards and certifications, ensuring quality and reliability. Common standards include:
- ASTM A514/A514M: Standard specification for high-yield-strength, quenched, and tempered alloy steel plates.
- EN 10051: Specification for hot-rolled plates and wide flats.
- ISO 9001: Quality management certification.
Comparison with Other Grades
| Property | AR400 | AR450 | AR500 |
| Hardness (HBW) | 360 – 440 | 425 – 475 | 470 – 540 |
| Abrasion Resistance | Moderate | High | Very High |
| Toughness | High | High | Moderate |
| Applications | General wear-resistant | Heavy-duty applications | Extreme abrasion |
Processing and Fabrication
1. Cutting
AR450 can be cut using thermal methods such as plasma, laser, or oxy-fuel cutting. For optimal results:
- Use a slower cutting speed.
- Apply preheating for plates thicker than 20 mm.
2. Welding
While weldable, AR450 requires specific precautions:
- Preheat to 150°C – 200°C for thicker sections.
- Use low-hydrogen electrodes.
- Ensure controlled cooling to prevent cracking.
3. Forming
Forming AR450 requires specialized tools and procedures due to its hardness. Recommended practices include:
- Utilize larger bend radii to reduce cracking risks.
- Perform bending at room temperature or with slight preheating.
4. Machining
Machining AR450 is challenging but feasible using:
- Carbide-tipped tools.
- Lower cutting speeds and higher feed rates.
Applications
- Mining and Quarrying: Equipment like crushers, hoppers, and chutes.
- Construction: Bulldozer blades, buckets, and dump truck beds.
- Agriculture: Plowshares, tillage equipment, and silos.
- Heavy Machinery: Wear plates, liners, and cutting edges.
- Recycling: Shredders and conveyors.
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