A-5S Alnico Magnetic Material,E FORU

### **Product Introduction: A-5S Alnico Magnetic Material** **A-5S Alnico** is an enhanced isotropic permanent magnet material that represents an optimized version within the Alnico 5 family, offering improved mechanical stability and more consistent magnetic performance. The "S" designation indicates a specialized formulation with enhanced structural integrity and superior consistency, making it particularly suitable for applications requiring reliable performance in demanding environments while maintaining isotropic characteristics. This advanced material combines the traditional advantages of Alnico magnets - exceptional temperature stability, high Curie temperature, and excellent corrosion resistance - with optimized processing techniques that deliver more predictable magnetic performance and improved mechanical properties across production batches. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of A-5S Alnico is as follows: | Element | Content (%) | |---------|-------------| | **Iron (Fe)** | Balance | | **Aluminum (Al)** | 7.8 - 8.5 | | **Nickel (Ni)** | 13.5 - 15.5 | | **Cobalt (Co)** | 23.5 - 25.0 | | **Copper (Cu)** | 3.0 - 3.8 | | **Titanium (Ti)** | 0.4 - 0.9 | | **Niobium (Nb)** | 0.7 - 1.2 | | **Silicon (Si)** | 0.1 - 0.4 | | **Other Elements** | ≤ 0.25 | --- #### **2. Physical & Magnetic Properties** **Magnetic Properties (Typical at 20°C):** | Property | Value (Typical) | Unit | |----------|-----------------|------| | **Residual Induction (Bᵣ)** | 12.2 - 12.8 | kG | | **Coercivity (Hᶜ)** | 1.45 - 1.65 | kOe | | **Intrinsic Coercivity (Hᶜⱼ)** | 1.55 - 1.75 | kOe | | **Maximum Energy Product ((BH)ₘₐₓ)** | 5.8 - 6.5 | MGOe | **Physical & Mechanical Properties:** | Property | Value | Unit | |----------|-------|------| | **Density** | 7.25 - 7.35 | g/cm³ | | **Coefficient of Thermal Expansion** | 11.4 - 12.1 | μm/m·°C | | **Curie Temperature** | 840 - 860 | °C | | **Maximum Operating Temperature** | 500 - 520 | °C | | **Vickers Hardness** | 480 - 550 | HV | | **Electrical Resistivity** | 75 - 90 | μΩ·cm | | **Compressive Strength** | 950 - 1150 | MPa | | **Flexural Strength** | 180 - 240 | MPa | | **Temperature Coefficient of Bᵣ** | -0.018 to -0.022 | %/°C | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **Isotropic Excellence**: Can be magnetized in any direction while maintaining high magnetic performance - **Enhanced Mechanical Strength**: Superior structural integrity and resistance to chipping - **Excellent Thermal Stability**: Maintains magnetic properties at elevated temperatures up to 520°C - **Superior Batch Consistency**: More uniform magnetic properties across production runs - **Good Corrosion Resistance**: Naturally stable in most environments without protective coatings - **Optimized Magnetic Balance**: Improved balance between residual induction and coercivity **Product Applications:** A-5S Alnico is particularly suitable for applications requiring isotropic characteristics with enhanced reliability: - **Automotive Systems**: - High-temperature sensors and actuators - Ignition system components - Position and speed sensors - Electric vehicle motor applications - **Industrial Equipment**: - Magnetic separators and concentrators - Workholding magnets and magnetic chucks - Process control instruments - Material handling systems - **Consumer Electronics**: - High-fidelity speaker systems - Microwave oven magnetrons - Sensor applications - Audio-visual equipment - **Aerospace and Defense**: - Instrumentation sensors - Control system components - Navigation equipment - Communication devices --- #### **4. International Standards & Specifications** A-5S Alnico complies with major international standards: - **IEC 60404-8-1**: International standard for permanent magnet materials - **ASTM A894/A894M**: Standard specification for aged permanent magnet alloys - **ISO 17556**: International standard for permanent magnet materials - **Regional Standards**: - **Europe**: EN 10303 equivalent specifications - **Japan**: JIS C 2502 compliant - **China**: GB/T 17951.6 similar classification - **Industry Certifications**: - Meets industrial quality standards - Compliant with RoHS and REACH requirements - Suitable for automotive and consumer applications --- #### **Summary of Key Advantages** - **Enhanced Performance**: Superior magnetic properties with excellent isotropic characteristics - **Improved Mechanical Integrity**: Enhanced strength and durability compared to standard grades - **Excellent Thermal Capability**: Reliable operation up to 520°C continuous service - **Superior Consistency**: More predictable magnetic performance across production batches - **Versatile Applications**: Suitable for wide range of industrial and consumer applications - **Proven Reliability**: Long-term stability with minimal performance degradation **Technical Note**: The A-5S grade maintains the isotropic nature of Alnico materials while offering improved mechanical properties and more consistent magnetic characteristics through optimized processing and quality control. This makes it particularly suitable for applications where both magnetic performance and structural reliability are critical. Like all Alnico materials, it requires diamond tools for machining and proper handling to prevent fracture due to its brittle nature. The material's isotropic characteristics make it ideal for applications requiring complex magnetic field patterns and multi-pole magnetization configurations.

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 3147 gallon liquid totes Special package is available on request.