A-57 Cast Alnico Magnet,E FORU
Product Code : NI-S1518-CU-CU
A-57 Cast Alnico Magnet, is available in Bar (Round bar, Flat bar), Ribbon, Wire, Rods, Tube, Pipe, Foil, Plate, Sheet, Strip and Forging Stock.
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### **Product Introduction: A-57 Cast Alnico Magnet**
**A-57 Cast Alnico** is a high-performance anisotropic permanent magnet material from the Alnico family, manufactured through traditional casting processes. As an anisotropic grade, it exhibits superior magnetic properties when magnetized along its preferred crystallographic orientation, making it ideal for applications requiring maximum magnetic energy in a specific direction.
This material represents one of the premium grades in the Alnico family, offering an excellent balance of high residual induction and good coercivity, combined with the characteristic Alnico advantages of outstanding thermal stability and long-term reliability.
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#### **1. Chemical Composition (Weight %)**
The typical chemical composition of A-57 Cast Alnico is as follows:
| Element | Content (%) |
| :--- | :--- |
| **Iron (Fe)** | Balance |
| **Aluminum (Al)** | 7.5 - 8.5 |
| **Nickel (Ni)** | 13.5 - 15.0 |
| **Cobalt (Co)** | 23.5 - 25.0 |
| **Copper (Cu)** | 2.8 - 3.5 |
| **Titanium (Ti)** | 0.3 - 0.8 |
| **Niobium (Nb)** | 0.8 - 1.2 |
| **Silicon (Si)** | 0.2 - 0.5 |
| **Other Elements** | ≤ 0.3 |
The carefully balanced composition, particularly the optimized cobalt and titanium content, enables the development of strong magnetic anisotropy during heat treatment in a magnetic field.
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#### **2. Physical & Magnetic Properties**
**Magnetic Properties (Typical at 20°C):**
| Property | Value (Typical) | Unit |
| :--- | :--- | :--- |
| **Residual Induction (Bᵣ)** | 12.8 - 13.2 | kG (kiloGauss) |
| **Coercivity (Hᶜ)** | 1.5 - 1.7 | kOe (kiloOersteds) |
| **Intrinsic Coercivity (Hᶜⱼ)** | 1.6 - 1.8 | kOe (kiloOersteds) |
| **Maximum Energy Product ((BH)ₘₐₓ)** | 7.0 - 7.5 | MGOe (Mega-Gauss Oersteds) |
**Physical & Mechanical Properties:**
| Property | Value | Unit |
| :--- | :--- | :--- |
| **Density** | 7.3 - 7.4 | g/cm³ |
| **Coefficient of Thermal Expansion (20-500°C)** | ~11.8 | 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 3141 gallon liquid totes Special package is available on request.
