Magnesium Calcium Master Alloy (Mg-Ca Alloy)，Magnesium Calcium Alloy，MgCa Alloy,E FOUR

### **Magnesium Calcium Master Alloy (Mg-Ca Alloy)** **Product Overview** Magnesium Calcium Master Alloy, commonly referred to as Mg-Ca Alloy, is a specialized magnesium-based alloy primarily used as an additive agent to modify and enhance the properties of other magnesium alloys and aluminum alloys. The addition of calcium significantly improves high-temperature properties, corrosion resistance, and mechanical characteristics of base alloys. This master alloy serves as a crucial processing material in foundry operations for producing high-performance magnesium and aluminum components, particularly for automotive and aerospace applications where elevated temperature performance is critical. The alloy is typically supplied in ingot form, waffle plates, or granules for convenient addition to molten metal during alloy production and refinement processes. --- #### **1. Chemical Composition** Mg-Ca Master Alloy features variable calcium content to suit different application requirements. | Element | Composition (% by Weight) | | :---------------- | :-------------------------------- | | **Calcium (Ca)** | 5.0 - 30.0 % | | **Magnesium (Mg)** | 70.0 - 95.0 % | | **Iron (Fe)** | ≤ 0.03 % | | **Nickel (Ni)** | ≤ 0.005 % | | **Copper (Cu)** | ≤ 0.02 % | | **Silicon (Si)** | ≤ 0.05 % | | **Aluminum (Al)** | ≤ 0.05 % | | **Other Impurities** | ≤ 0.10 % (each) | *Note:* The **calcium** content can be customized based on specific application requirements. Higher calcium concentrations (15-30%) are typically used for more significant property modifications, while lower concentrations (5-15%) serve for finer adjustments in alloy characteristics. --- #### **2. Physical & Mechanical Properties** The physical properties vary significantly with calcium content, but general characteristics include: **Physical Properties:** * **Density:** 1.65 - 1.75 g/cm³ (varies with Ca content) * **Melting Range:** 515 - 650 °C (959 - 1202 °F) * **Appearance:** Silvery-white metallic appearance * **Solubility in Magnesium:** Complete at standard casting temperatures **Effect on Final Alloys:** When properly added to magnesium or aluminum alloys, Mg-Ca Master Alloy provides: * **Grain Refinement:** Improves microstructure and mechanical properties * **Oxidation Resistance:** Significantly enhances high-temperature oxidation resistance * **Creep Resistance:** Improves elevated temperature performance * **Strength Enhancement:** Increases yield and tensile strength at high temperatures * **Fluidity Improvement:** Enhances casting characteristics --- #### **3. International Standards & Specifications** Mg-Ca Master Alloy is covered under various international and industry specifications. * **ASTM International:** **ASTM B951** (Standard Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys) * **ISO Standards:** **ISO 16220** (Magnesium and magnesium alloys - Castings) * **SAE International:** **SAE J465** * **DIN Standards:** **DIN 1729-2** * **Custom Specifications:** Often produced according to customer-specific requirements --- #### **4. Product Applications** Mg-Ca Master Alloy serves as a critical additive in multiple industrial sectors. * **Magnesium Alloy Production:** * **High-Temperature Magnesium Alloys** (e.g., for automotive engine blocks) * **Creep-Resistant Magnesium Alloys** * **Flame-Retardant Magnesium Alloys** * **Wrought Magnesium Alloy Production** * **Aluminum Alloy Modification:** * **Aluminum-Silicon Alloy Refinement** * **Aluminum Alloy Grain Refinement** * **High-Strength Aluminum Alloy Production** * **Steel and Iron Industry:** * **Steel Desulfurization** * **Inclusion Morphology Control** * **Ductile Iron Production** * **Specialized Applications:** * **Nuclear Industry Applications** * **Aerospace Component Manufacturing** * **Automotive Powertrain Components** * **Electronic Housing Production** --- #### **5. Usage Guidelines and Processing** **Typical Addition Rates:** * **For Magnesium Alloys:** 0.5 - 3.0% of total melt weight * **For Aluminum Alloys:** 0.2 - 1.5% of total melt weight * **For Steel Processing:** Varies based on specific process requirements **Processing Parameters:** * **Optimal Processing Temperature:** 680 - 750 °C (1256 - 1382 °F) * **Mixing Time:** 10 - 25 minutes after addition * **Atmosphere Control:** Recommended to use protective atmosphere * **Addition Method:** Best added during late stages of melting process --- **Summary** **Magnesium Calcium Master Alloy (Mg-Ca Alloy)** represents a vital enabling technology in advanced metallurgy, serving as a versatile and effective additive for enhancing the properties of both magnesium and aluminum alloys. The strategic addition of **calcium** provides significant improvements in **high-temperature performance**, **oxidation resistance**, and **mechanical properties** of final alloys. While not used as a structural material itself, Mg-Ca Master Alloy plays an indispensable role in manufacturing high-performance components for automotive, aerospace, and industrial applications. Its ability to enhance creep resistance and high-temperature stability makes it particularly valuable for powertrain components and other applications where thermal management is critical. The alloy's flexibility in calcium content and form factors ensures it can be tailored to meet specific manufacturing requirements, making it an essential tool for metallurgists and foundry engineers seeking to optimize alloy performance for demanding applications.

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 3440 gallon liquid totes Special package is available on request.