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Specifics on Iron-Cobalt Alloys

Are there any Iron-Cobalt alloys that have as much as 50% cobalt listed through ASTM or any other society?

Patrick Clements
- Columbia, South Carolina, United States
2003

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First of two simultaneous responses --

Patrick, there's UNS R30005, listed as Type 1 per ASTM A801. It allows up to 49.5% cobalt. Is that what you were looking for?

Lee Gearhart
metallurgist - E. Aurora, New York
2003

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Second of two simultaneous responses --

You can electrodeposit almost any mixture of iron and cobalt, but they tend to be brittle and stressed if you get the wrong ratios. What bath are you using and what do you wnat it for?

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2003

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I am using the Iron-cobalt for a science experiment that tests magnetic strength. I also need Iron-cobalt alloys of 25% 10% 5% and 2.5% Cobalt. So I also need ASTM numbers for these as well.

Patrick Clements
- Columbia, South Carolina, US
2003

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I am not sure they will all have ASTM numbers as some of them will be solid solutions of one metal in another. However, all is not lost - you can create these "alloys" (in the loosest sense of the word) by electrodeposition from suitable electrolytes. If needs be, you can electroform them to produce the required thicknesses, or alternatively you can just put an electrodeposit onto a suitable (non-magnetic!) substrate.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2003

I think it will be too much trouble to get grant money to pay for electrodepositing Iron-Cobalt alloys, so I am making a switch to Iron-Nickel alloys. I need the ASTM numbers same concentrations: 50%, 25%, 10%, and 2.5%. So if you know these numbers I would appreciate them too.

Thanks.

Patrick Clements
- Columbia, South Carolina, US
2003

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I am doing a science experiment involving changes in the concentration of Nickel-Iron alloys as the cores of electromagnets. I need the ASTM numbers same for Iron-Nickel alloys of: 100% Iron, 50% Iron, 75% Iron, 90% Iron, and 97.5% Iron. I would really appreciate anyone who knows ASTM numbers or any other society's specification numbers for these materials, or if someone could tell me a book where I could find the material's numbers myself.

Thanks.

Patrick Clements
- Columbia, South Carolina, USA
2003