Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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1J79 Soft Magnetic Alloy Tubes: Precision Engineering for Electromagnetic Excellence
1J79, also known as Ni79Mo4 or Permalloy, is a high-performance soft magnetic alloy composed primarily of nickel (78.5–80%) and iron, with molybdenum (3.8–4.1%) as a key component. This alloy exhibits exceptional magnetic properties, making it ideal for applications requiring high magnetic permeability and low coercivity. The alloy's face-centered cubic (FCC) crystal structure contributes to its superior magnetic characteristics.
| Element | Composition (%) |
|---|---|
| Ni | 78.5–80.0 |
| Fe | Balance |
| Mo | 3.8–4.1 |
| Mn | ≤0.6 |
| Si | ≤0.3 |
| C | ≤0.03 |
| P | ≤0.02 |
| S | ≤0.02 |
| Property | Value |
|---|---|
| Density | 8.6 g/cm³ |
| Melting Point | 1397–1427°C |
| Electrical Resistivity (20°C) | 0.55 μΩ·m |
| Curie Point | 450°C |
| Saturation Magnetostriction | 2.0 × 10⁻⁶ |
| Tensile Strength | ≥560 MPa |
| Yield Strength | ≥980 MPa |
| Elongation | ≥35% |
| Brinell Hardness | ≤205 HB |
| Property | Value |
|---|---|
| Initial Permeability | ≥40 mH/m |
| Maximum Permeability | ≥310 mH/m |
| Coercivity | ≤2.0 A/m |
| Saturation Magnetic Induction | ≥0.73 T |
1J79 soft magnetic alloy tubes are extensively used in:
Magnetic amplifiers
Magnetic regulators
Current transformers
Pulse transformers
Electronic watch stepper motors
High-precision computers
Choke coils
Magnetic shielding covers
These applications benefit from 1J79's high magnetic permeability, low coercivity, and minimal magnetostriction.
Q1: What are the primary advantages of using 1J79 soft magnetic alloy tubes?
A1: The primary advantages include high magnetic permeability, low coercivity, minimal magnetostriction, and excellent dimensional stability, making them suitable for high-precision electromagnetic applications.
Q2: In what industries are 1J79 tubes commonly used?
A2: 1J79 tubes are commonly used in the electronics, telecommunications, aerospace, and instrumentation industries, particularly in components like transformers and magnetic shields.
Q3: What are the typical forms available for 1J79 alloy?
A3: 1J79 alloy is available in various forms, including tubes, wires, strips, bars, and foils, catering to diverse application requirements.