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Electropolishing With Elgiloy

Electropolishing For Elgiloy Metal

The precision of the electropolishing process for Elgiloy metal is an advantage over mechanical polishing, which can lead to a noticeable decrease in the dimensions of a metal part, and it can be controlled to remove less than a ten-thousandth of an inch from the surface.

The metal is passivated in the process, making it resilient against the elements and resistant to natural corrosion. At our facility, we are capable of electropolishing thousands or hundreds of thousands of pieces of metal with Eligoy.

What Is Elgiloy?

Elgiloy is a “super-alloy” consisting of…

  • 39-41% Cobalt
  • 19-21% Chromium
  • 14-16% Nickel
  • 11.3-20.5% Iron
  • 6-8% Molybdenum
  • 1.5-2.5% Manganese

It is used to make springs that are corrosion resistant and exhibit high strength, ductility, and good fatigue life.
These same properties led to it being used for control cables in the Lockheed SR-71 Blackbird airplane. Due to its
chemical composition, Elgiloy is highly resistant to sulfide stress corrosion cracking and pitting, and can operate at
temperatures up to 454°C.

Elgiloy meets specifications AMS 5876, AMS 5833, and UNS R30003.

Stainless Steel Electropolishing For The Following Types of Other Metals

If you have questions about whether or not your Eligoy metal can be electropolished, please contact us or send us your
specs using this form.

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