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Send EmailAlCu Master Alloy, AlCu50, Copper-Enriched Aluminum Master Alloy, 7440-50-8, 7429-90-5, 7440-21-3, 7439-89-6
🧪 1. Full Product Name
AlCu – Copper-Enriched Aluminum Master Alloy for Hardening Variant:
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AlCu50
🔢 2. CAS Numbers
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Copper (Cu): 7440-50-8
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Aluminum (Al): 7429-90-5
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Silicon (Si): 7440-21-3
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Iron (Fe): 7439-89-6
Note: AlCu master alloys do not have a unique CAS number; component CAS numbers are listed.
⚙️ 3. Technical Specifications
| Property | Value / Range |
|---|---|
| Cu Content | 48% – 52% |
| Si / Fe (max) | Typically < 0.3% |
| Physical Forms | Ingot, Waffle Ingot (Petek Ingot) |
| Density | ~2.8–3.0 g/cm³ |
| Melting Point | ~640–660 °C |
| Packaging | Crate-protected waffle ingots or standard ingot packaging |
🧭 4. Detailed Application Areas
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Used to increase strength and hardness in aluminum alloys.
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Copper forms soluble phases in aluminum, enabling age hardening (precipitation hardening).
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Commonly used in AlCu series alloys (e.g., 2xxx series).
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Application areas include:
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Aircraft structures, automotive chassis components, defense-grade aluminum parts
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High-temperature and high-stress aluminum applications
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Added directly into molten aluminum to achieve target Cu concentration.
🚨 5. Mandatory Use Cases
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Aerospace and defense sectors require Cu addition for high-strength aluminum alloys.
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Compliance with standards such as EN 573, AMS 4027, ASTM B209 may necessitate AlCu master alloy usage.
🧩 6. Sectoral Compatibility Table
| Sector | Compatibility | Notes |
|---|---|---|
| Automotive | ✅ | Used in chassis and engine components |
| Aerospace | ✅ | Essential in structural AlCu alloys |
| Defense Industry | ✅ | Required for high-strength aluminum alloys |
| Construction | ⚠️ | Limited use; not typically required |
| Food Packaging | ❌ | Not suitable for food-contact alloys |
| Electronics | ⚠️ | Applicable in select thermal alloys |
🧾 7. Alternative Names
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AlCu Master Alloy
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AlCu50
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Copper Hardening Additive
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Cu-Enriched Aluminum Modifier
🗣️ 8. Common Trade Names / Informal Terms
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Copper-rich aluminum alloy ingot
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AlCu waffle
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Hardening additive
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Aluminum-copper alloy block
🏭 9. Production Details
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Manufacturing Process: Copper is alloyed into molten aluminum under controlled conditions to form a homogeneous master alloy.
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Producing Countries: China, Germany, India, Türkiye
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True Producers vs. Traders: Direct producers ensure consistent Cu content and phase uniformity. Trader-sourced products may vary in purity and origin.
Note: Phase stability and impurity control are critical for age-hardening performance.
