Nickel Iron Alloys
Magnetic and thermal expansion properties
Nickel iron alloys are ideal for electrical, electronic, aerospace and precision engineering applications.
At Smiths Advanced Metals, we stock two key categories: controlled expansion alloys and soft magnetic alloys (Radiometal 4550).
Controlled Expansion Alloys
Controlled expansion alloys are designed to provide predictable thermal expansion and minimise stress caused by temperature fluctuations. Their controlled coefficient of thermal expansion makes them suitable for applications where dimensional stability is critical, particularly when matching the expansion characteristics of glass, ceramics, composites and other engineering materials.
Soft Magnetic Alloys
We stock Radiometal 4550, a high-performance soft magnetic nickel iron alloy designed for applications requiring exceptional response to weak magnetic fields and currents. Its high permeability makes it particularly suitable for electronic relays, transformers, magnetic shielding and precision electrical equipment.
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Impressive Versatility
Nickel iron alloys (Ni-Fe) possess unique properties that make them invaluable in various applications, including relays, inductors, and high-frequency transformers.
The materials in this category are highly versatile. Depending on the outcome you are looking for, adjusting the nickel content of the alloy maximises magnetisation, permeability, saturation or electrical resistance.
Nickel iron alloys are a material of choice for electrical applications.
Stock Information
We currently stock Radiometal 4550 nickel iron bars, although we intend to expand our nickel-iron range considerably over the next few years.
Nickel iron alloys are highly suitable for electrical engineering applications as they can be easily magnetised or demagnetised. Our products are ideal for influencing the flux of electrical currents.
The performance of nickel iron alloys may be changed by increasing or decreasing nickel content. Changes will dictate whether the alloy offers increased electrical resistance and permeability.
