Pelat 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.
Untuk penambangan, penggalian, recycling and construction machinery, AR450 stands out as a versatile, high-performance wear-resistant solution.
- Keterangan
AR450 plate adalah kekuatan tinggi padam dan marah (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 Baja Tahan Abrasi, and the number (seperti 400, 450, 500) represents the nominal Brinell hardness level (HB).
AR steel plates are widely used in mining equipment, badan truk sampah, loader, ujung tombak, penghancur, 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:
| Nilai | Nominal Hardness (HB) | Penggunaan Khas |
|---|---|---|
| AR200 / AR235 | 180–250HB | Forming parts, light abrasion |
| AR360 / AR400 | 360–440HB | General abrasion with moderate impact |
| AR450 | 420–480HB | Abrasi tinggi & medium/high impact |
| AR500 | 480–550HB | Abrasi ekstrim, dampak terbatas |
| AR600 | 570–650 HB | Ultra-high abrasion, dampak rendah |
Typical Chemical Composition of AR450 (Reference Range)
| Elemen | Konten Khas (%) |
|---|---|
| Karbon (C) | 0.20–0.28 |
| mangan (M N) | 1.0–1.6 |
| Silikon (Dan) | 0.20–0,50 |
| Kromium (Kr) | 0.40–1.20 |
| Nikel (Di dalam) | 0.20–1.0 |
| Molibdenum (Mo) | 0.20–0.60 |
| Boron (B) | ≤0,005 |
Exact composition may vary by manufacturer specification.
Perbandingan Sifat Mekanik
| Milik | AR400 | AR450 | AR500 |
|---|---|---|---|
| Kekerasan | 360–440HB | 420–480HB | 480–550HB |
| Kekuatan Tarik | 1250–1500MPa | 1350–1650 MPa | 1400–1700 MPa |
| Kekuatan Hasil | 900–1200 MPa | 1100–1350 MPa | 1100–1400 MPa |
| Resistensi Dampak | Tinggi | Sangat Tinggi | Sedang hingga Tinggi |
| Sifat mampu bentuk | Bagus | Sedang | Lebih rendah (prone to cracking) |
| Kemampuan las | Controlled preheat required | Terkendali | Controlled carefully |
Performance Characteristics of AR450 Plate
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Kekerasan dan ketangguhan seimbang, ideal for high impact + abrasi tinggi
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Umur panjang 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, pengelasan, 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 & liner
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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
| Kondisi Aplikasi | Kelas yang Direkomendasikan |
|---|---|
| Dampak tinggi + abrasi sedang | AR450 |
| Keausan geser + dampak rendah | AR500 / AR600 |
| Formable wear components | AR235 / AR360 / AR400 |
| Ultra-high erosion particles | AR600 or carbide composite plate |
