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Chemical Etching with Nickel Iron

When it comes time to look for a versatile, strong, and corrosion-resistant metal, many engineers and manufacturers turn to nickel iron. Nickel iron is a versatile material ready for forming, plating, can laser welding for hermetic sealing. 

E-Fab uses nickel iron to expertly produce transformers, inductors, magnetic amplifiers and shields, covers, carriers, and contacts. We have a decades-long track record of supplying clients in the electronics and microwave industries with our precision nickel iron parts. 

We welcome your questions about how to use nickel iron for your parts.

Types of Nickel Iron used
at E-Fab

We are experts working with nickel iron and utilize alloy nickel iron materials depending on our customers’ design requirements and application needs.

Here are the most common types of nickel iron alloys we use:

Kovar (ASTM F15)     35 (Invar)     36 (Invar)     42     46     48     49     50

Call us to discuss which nickel iron alloy is right for your part.

Nickel Iron Etching Capabilities

Panel SizeMin. 6” x 6”, max 24” x 24”
Panel ThicknessMin. 0.001”, max 0.050”
Hole SizeMin. 0.006” or 125% of material thickness
SpacingMin. same as material thickness
Inside & Outside RadiiInside: Approx. 80% material thickness Outside: Material thickness
Center-center hole distanceDIA + material thickness
Etch Tolerance± 10% material thickness, no less than ±0.001”

Why Choose Nickel Iron

Soft Magnetic
High Strength
Corrosion Resistance
Nickel Iron is the metal of choice when engineers in the electronics and microwave industries design parts used in sensitive applications. In addition to its broad versatility and high strength, nickel iron is a soft magnetic material resistant to corrosion.

E-Fab manufacturers are experts at etching and forming nickel iron to precise standards and specifications.

We’ve produced transformers, inductors, magnetic amplifiers and shields, covers, carriers, and contacts used in the electronics and microwave industries.

E-Fab is an industry leader in delivering innovative, accurate, and reliable parts thanks to decades of experience and expertise in a suite of processes.

We are known for our experience and expertise in:



Design Support

Photochemical Etching



High-frequency Substrate

CNC Machining





Supply Chain Acquisitions

We work with the world’s most important industries.

E-fab Aerospace
E-fab Industries Defense Army Tank
Eye Examination Test
E-fab Industries Technology
renewable energy from solar panels and wind farms
E-fab Telecom Ground Satelite
Containing Fuel in Auto Tank
Electr. Vehicles & Automotive

Contact us to discuss how we can deliver engineering and manufacturing solutions.