A-2 Alnico Magnetic Material,E FORU

### **Product Introduction: A-2 Alnico Magnetic Material** **A-2 Alnico** is a member of the Alnico family, which is a class of permanent magnet materials known for their excellent magnetic stability, high residual induction, and superior performance at elevated temperatures. The name "Alnico" is derived from its primary alloying elements: **Al**uminum, **Ni**ckel, and **Co**balt. A-2 is an **isotropic** Alnico grade, meaning it can be magnetized in any direction without a preferred magnetic orientation. This characteristic, combined with its good castability, makes it a versatile and cost-effective choice for producing complex magnet shapes. It offers a balanced combination of magnetic properties, good mechanical strength, and outstanding resistance to demagnetization at high temperatures, making it suitable for a wide range of industrial and consumer applications. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of A-2 Alnico is as follows: | Element | Content (%) | | :--- | :--- | | **Iron (Fe)** | Balance | | **Aluminum (Al)** | 8.0 - 10.0 | | **Nickel (Ni)** | 13.0 - 17.0 | | **Cobalt (Co)** | 11.5 - 14.5 | | **Copper (Cu)** | 2.5 - 4.5 | | **Titanium (Ti)** | 0.5 - 1.5 | | **Other Elements** | ≤ 1.0 | The balance of these elements creates a microstructure that is critical for its magnetic properties, typically featuring a fine-scale precipitation of ferromagnetic particles within a non-magnetic matrix. --- #### **2. Physical & Magnetic Properties** Typical physical and magnetic properties for A-2 Alnico are provided below. **Magnetic Properties (Typical at 20°C):** | Property | Value (Typical) | Unit | | :--- | :--- | :--- | | **Residual Induction (Bᵣ)** | 7.0 - 7.5 | kG (kiloGauss) | | **Coercivity (Hᶜ)** | 1.4 - 1.6 | kOe (kiloOersteds) | | **Intrinsic Coercivity (Hᶜⱼ)** | 1.5 - 1.7 | kOe (kiloOersteds) | | **Maximum Energy Product ((BH)ₘₐₓ)** | 1.4 - 1.8 | MGOe (Mega-Gauss Oersteds) | **Physical & Mechanical Properties:** | Property | Value | Unit | | :--- | :--- | :--- | | **Density** | 7.0 - 7.1 | g/cm³ | | **Coefficient of Thermal Expansion (20-500°C)** | ~11.0 | μm/m·°C | | **Curie Temperature (T

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 3138 gallon liquid totes Special package is available on request.