Aluminum Calcium Alloy ,Aluminum Calcium Master Alloy (Al-Ca Alloy)，E FORU

### **Product Datasheet: Aluminum Calcium Master Alloy (Al-Ca Alloy)** --- #### **1. General Overview** Aluminum Calcium (Al-Ca) Master Alloy is a specialized additive used in the aluminum industry primarily for grain refinement and oxide control. Calcium reacts with aluminum and its impurities to form intermetallic compounds that influence the final properties of aluminum alloys. The master alloy is typically supplied in pre-determined ratios to facilitate precise addition to molten aluminum. --- #### **2. International Standards** While specific standardized designations for Al-Ca master alloys are less common than for primary aluminum alloys, they are produced and controlled under general industrial and internal specifications: - **ISO:** Refer to ISO 16220 for calcium additions in aluminum alloys - **ASTM:** ASTM B934 for grain refinement testing (indirect reference) - **Typical Master Alloy Specifications:** Al-5%Ca, Al-10%Ca, Al-15%Ca (weight percentages) --- #### **3. Chemical Composition (Weight %)** Typical composition ranges for Al-Ca master alloy: | Element | Content (%) | Notes | |---------|-------------|---------| | **Calcium (Ca)** | 5.0 - 15.0 | Primary alloying element | | **Silicon (Si)** | ≤ 0.20 | Impurity control | | **Iron (Fe)** | ≤ 0.25 | Impurity control | | **Other Elements** | ≤ 0.05 each | Impurity control | | **Aluminum (Al)** | Balance | Base metal | --- #### **4. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | ~ 2.55-2.65 g/cm³ (varies with Ca content) | | **Melting Range** | ~ 600-650°C (1112-1202°F) | | **Appearance** | Metallic ingot or notch bar with silvery-gray surface | | **Solubility in Aluminum** | Limited, forms intermetallic compounds | --- #### **5. Key Characteristics & Advantages** - **Grain Refinement:** Calcium helps in refining the grain structure of aluminum castings - **Oxidation Control:** Acts as an oxygen scavenger in molten aluminum - **Modification of Phases:** Can modify intermetallic phases in aluminum-silicon alloys - **Improved Fluidity:** Enhances casting characteristics in some applications - **Cost-Effective:** Provides an economical alternative to some more expensive alloy additions --- #### **6. Product Applications** ##### **Primary Applications:** - **Aluminum Foundries:** For grain refinement in casting alloys - **Secondary Aluminum Production:** In recycling operations to control oxide content - **Wrought Alloy Production:** Limited use in some specialized wrought products ##### **Specific Use Cases:** - **Cable Sheathing Alloys:** Historical use in some aluminum cable alloys - **Foil Stock:** For specific foil products requiring modified properties - **Deoxidation:** As a deoxidizer in aluminum melt treatment --- #### **7. Available Forms & Handling** - **Forms:** Ingots, notch bars, granules - **Sizes:** Typically 5-10 kg ingots or customer-specific sizes - **Packaging:** Sealed containers to prevent moisture absorption - **Storage:** Dry conditions to prevent surface oxidation --- #### **8. Technical Considerations** - **Addition Rate:** Typically 0.1-2.0% to the melt, depending on application - **Melt Temperature:** Optimal addition at 700-750°C - **Holding Time:** Requires sufficient time for dissolution and distribution - **Safety:** Proper ventilation required during addition to fume extraction --- ### **Disclaimer** The information provided herein is for reference purposes only. The properties and performance of Aluminum Calcium Master Alloy can vary based on specific manufacturing processes, addition methods, and base alloy composition. Users should conduct their own testing and consult with technical experts for specific application requirements. Proper handling procedures and safety precautions must be followed during usage.

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 2279 gallon liquid totes Special package is available on request.