Placa AR450
AR450 plate offers an optimal combination of hardness and impact toughness, making it a popular choice for heavy equipment operating in harsh abrasive environments. The AR wear steel family includes multiple grades—ranging from AR200 to AR600—allowing engineers to choose the most suitable hardness based on abrasion severity and structural requirements.
Para la minería, cantera, recycling and construction machinery, AR450 stands out as a versatile, high-performance wear-resistant solution.
- Descripción
AR450 plate es de alta resistencia apagado y revenido (q&T) abrasion-resistant steel designed to provide excellent wear resistance and high impact strength in heavy-duty industrial environments. The “AR” designation stands for Acero resistente a la abrasión, and the number (como 400, 450, 500) represents the nominal Brinell hardness level (media pensión).
AR steel plates are widely used in mining equipment, carrocerías de camiones volquete, cargadores, bordes cortantes, trituradoras, cement and aggregate machinery, and industrial wear components.
Common Grades of AR Wear-Resistant Steel
The AR series includes multiple hardness grades to fit different wear conditions:
| Calificación | Nominal Hardness (media pensión) | Uso típico |
|---|---|---|
| AR200 / AR235 | 180–250 HB | Forming parts, light abrasion |
| AR360 / AR400 | 360–440 HB | General abrasion with moderate impact |
| AR450 | 420–480 HB | Alta abrasión & medium/high impact |
| AR500 | 480–550 HB | abrasión extrema, limited impact |
| AR600 | 570–650 HB | Ultra-high abrasion, bajo impacto |
Typical Chemical Composition of AR450 (Reference Range)
| Elemento | Contenido típico (%) |
|---|---|
| Carbón (do) | 0.20–0,28 |
| Manganeso (Minnesota) | 1.0–1,6 |
| Silicio (Y) | 0.20–0,50 |
| Cromo (cr) | 0.40–1,20 |
| Níquel (En) | 0.20–1,0 |
| Molibdeno (Mes) | 0.20–0.60 |
| Boro (B) | ≤0,005 |
Exact composition may vary by manufacturer specification.
Comparación de propiedades mecánicas
| Propiedad | AR400 | AR450 | AR500 |
|---|---|---|---|
| Dureza | 360–440 HB | 420–480 HB | 480–550 HB |
| Resistencia a la tracción | 1250–1500 MPa | 1350–1650 MPa | 1400–1700 MPa |
| Fuerza de producción | 900–1200 MPa | 1100–1350 MPa | 1100–1400 MPa |
| Resistencia al impacto | Alto | muy alto | Medio a alto |
| Formabilidad | Bien | Moderado | Más bajo (prone to cracking) |
| Soldabilidad | Controlled preheat required | Revisado | Controlled carefully |
Performance Characteristics of AR450 Plate
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Dureza y tenacidad equilibradas, ideal for high impact + alta abrasión
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Larga vida útil compared to AR400 under same conditions
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Good structural stability due to Q&T heat treatment
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Compatible with cutting, soldadura, bending and forming processes
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Crack resistance superior to AR500 under impact loading
Typical Applications of AR450 Plate
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Mining dump truck bodies & revestimiento
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Loader, excavator and bulldozer bucket edges
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Crushing, screening and conveying machinery
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Shovel and dragline components
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Concrete mixer blades and cement plant parts
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Cutting edges and wear bars
Advantages of Using AR450 Over Other Grades
| Application Condition | Grado recomendado |
|---|---|
| Alto impacto + abrasión moderada | AR450 |
| Desgaste por deslizamiento + bajo impacto | AR500 / AR600 |
| Formable wear components | AR235 / AR360 / AR400 |
| Ultra-high erosion particles | AR600 or carbide composite plate |
