Aluminum Cobalt Alloy，Aluminum Cobalt Master Alloy (Al-Co Alloy)，E FORU

### **Product Datasheet: Aluminum Cobalt Master Alloy (Al-Co Alloy)** --- #### **1. General Overview** Aluminum Cobalt (Al-Co) Master Alloy is a specialized additive used in aluminum alloy production, primarily serving as an effective grain refiner and property modifier. Cobalt forms various intermetallic compounds with aluminum and other elements, significantly influencing the microstructure and resulting properties of aluminum alloys. This master alloy is particularly valued in specialized applications where controlled intermetallic formation and high-temperature stability are required. --- #### **2. International Standards** Al-Co master alloys are produced according to various international and internal specifications: - **ISO:** Referenced under ISO 209 for aluminum alloy composition standards - **ASTM:** ASTM B928 covers some cobalt-containing aluminum alloys - **EN:** European standard EN 575 for master alloys - **Typical Master Alloy Grades:** Al-5%Co, Al-10%Co, Al-20%Co (weight percentages) - **Custom compositions** available based on specific customer requirements --- #### **3. Chemical Composition (Weight %)** Typical composition ranges for Al-Co master alloy: | Element | Content (%) | Notes | |---------|-------------|---------| | **Cobalt (Co)** | 5.0 - 25.0 | Primary alloying element | | **Silicon (Si)** | ≤ 0.15 | Impurity control | | **Iron (Fe)** | ≤ 0.20 | Impurity control | | **Copper (Cu)** | ≤ 0.05 | Impurity control | | **Other Elements** | ≤ 0.05 each | Impurity control | | **Aluminum (Al)** | Balance | Base metal | *Note: Higher cobalt concentrations (up to 50%) available for specialized applications* --- #### **4. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | ~ 2.8-3.2 g/cm³ (depending on Co content) | | **Melting Point** | ~ 650-750°C (1202-1382°F) | | **Appearance** | Metallic ingot with bluish-silvery surface | | **Hardness** | 80-120 HB (higher cobalt content increases hardness) | | **Electrical Conductivity** | 35-45% IACS (varies with composition) | --- #### **5. Key Characteristics & Advantages** - **Excellent Grain Refinement:** Effective grain refiner for aluminum casting alloys - **Intermetallic Formation:** Forms stable Al₉Co₂ and other intermetallic phases - **High Temperature Stability:** Maintains properties at elevated temperatures - **Corrosion Resistance:** Enhances corrosion resistance in certain applications - **Magnetic Properties:** Can impart specific magnetic characteristics - **Recyclability:** Compatible with aluminum recycling processes --- #### **6. Product Applications** ##### **Primary Applications:** - **Aerospace Alloys:** For high-temperature aluminum applications - **Automotive Industry:** In piston alloys and high-temperature components - **Electrical Applications:** For specific electrical conductor alloys - **Specialized Castings:** In investment and sand casting applications ##### **Specific Use Cases:** - **Piston Alloys:** Modification of Al-Si alloys for improved high-temperature performance - **Bearing Alloys:** For enhanced wear resistance in aluminum bearing materials - **Electrical Components:** In specialized electrical conductor alloys - **Research & Development:** For developing new aluminum alloy systems --- #### **7. Available Forms & Handling** - **Forms:** Ingots, notch bars, granules, powder - **Standard Sizes:** 5-15 kg ingots, custom sizes available - **Packaging:** Sealed containers with desiccant to prevent oxidation - **Storage:** Dry, controlled environment - **Shelf Life:** Indefinite when properly stored --- #### **8. Technical Considerations** - **Addition Rate:** Typically 0.5-3.0% to the melt - **Melt Temperature:** Optimal addition at 720-780°C - **Holding Time:** 15-30 minutes for complete dissolution - **Mixing:** Requires thorough mechanical stirring - **Safety:** Standard foundry safety procedures apply --- #### **9. Quality Assurance** - **Chemical Analysis:** Full spectrochemical analysis for each batch - **Microstructure Control:** Verified through metallographic examination - **Size Consistency:** Maintained through controlled crushing/sizing processes - **Traceability:** Full batch traceability maintained --- ### **Disclaimer** The information provided herein is for technical reference only. Specific applications may require modification of parameters and compositions. Users should conduct comprehensive testing to verify suitability for intended applications. The manufacturer assumes no liability for improper use or application of this product. Always follow appropriate safety guidelines and industrial best practices when handling and using master alloys.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2280 gallon liquid totes Special package is available on request.