1J33 is a nickel-iron soft magnetic alloy belonging to the
high-permeability Permalloy family. Its main composition is based
on nickel and iron, with carefully controlled alloying additions to
optimize magnetic performance. It features relatively high initial
magnetic permeability, low coercivity, and good magnetic stability,
making it suitable for precision electromagnetic applications.
Compared with some high-nickel soft magnetic alloys, 1J33 offers a
balanced combination of magnetic properties and mechanical
workability.
After appropriate cold working and annealing treatment, 1J33
exhibits improved soft magnetic performance, particularly in weak
magnetic field conditions where it provides high sensitivity and
low energy loss. However, the material is stress-sensitive, so
vacuum or protective atmosphere annealing is typically required to
relieve internal stress and stabilize its magnetic properties.
1J33 is widely used in precision electromagnetic components and
weak magnetic field applications, such as magnetic shielding
structures, precision transformer cores, magnetic sensors, and
high-sensitivity relays. It is an important functional material in
electronic systems that require low noise, high stability, and
reliable magnetic performance.
1. Chemical Composition:
Ni | 79-81% |
Mo | 3-4% |
Fe | Bal |
Si | ≤0.3% |
C | ≤0.03% |
S | ≤0.02% |
2. Technical Specifications:
Parameter | Specification |
Max continuous Operating Temperature(℃) | 400-450 |
Resisivity(Ω·cm,20℃) | 0.45-0.55 |
Density(g/m³) | 8.7-8.8 |
Thermal Conductivity(KJ/m·h·℃) | 70-90 |
Tensile strength(N/m㎡) | 400-600 |
Melting point(℃) | 1450-1500 |
Hardness(Hv) | 150-200 |
Elongation(%) | 30-50 |
3. Production Attributes:
Product Form | wire |
Diameter | customization |
Surface Finish | Bright, Polished |
Packaging Type | Coil, Bundle, Straight Rods |
Certification | ISO9001, SGS, and so on |
Application Environment | Chemical, Industrial,Home |
4. Applications:
- Magnetic shielding components
- Precision transformer cores
- Magnetic sensors
- Fluxgate sensor components
- High-sensitivity relays
- Precision measurement and control instruments
- Aerospace and aviation electronic systems
- Scientific research equipment
- Low-noise inductive components in high-precision circuits
5.Key features:
- High initial magnetic permeability
- Low coercivity
- Low hysteresis loss
- Good weak magnetic field sensitivity
- Stable magnetic performance after proper annealing
- Excellent magnetic shielding capability
- Good workability in fine wire form
- Strong stress sensitivity
- Good consistency in precision electronic applications
- Suitable for low-noise, high-stability magnetic systems
