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Nordic Gold

I'm planning on making a ring out of a coin.
I'll use Euro coins.
1, 2 e 5 Eurocent coins are made of copper covered steel and are too small, so I think they won't be a good choice.
1 and 2 Euro coins are the right size, but it seems that they are made of alloys containing nickel, that may cause allergy.
So I think I'll use a 50 Eurocent coin, that is made of Nordic Gold, an alloy (89% copper, 5% aluminium, 5% zinc, and 1% tin).

Has anyone ever made a ring out of Nordic Gold?
Did it cause allergy or stain your finger?   Did it tarnish?
Is it malleable?

Thanks

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AndyGadget3 years ago
 
Interesting; I'd never heard of this alloy, probably because we don't use coins made from it in the UK.  There's an interesting article about the development and properties of Nordic gold HERE.  According to the article, it is malleable and non-staining as well as non-allergenic, durable and non-tarnishing.  Sounds ideal.
Wonder how it works ? Copper alloys tend to work harden, and need annealing periodically.

Steve
nick1104969 months ago

I made one out of a .5 euro about two years ago. I annealed it in an oven at 500 F for about 2 hours and let it air-cool. Worked it into shape then re-annealed it before drilling the inside.

It didn't stain skin or cause allergies. I found it easier to work with then traditional non-precious metal coins, however it was still significantly harder than silver/gold.

Shining it with Mothers Mag & Aluminum Polish gave it a shine equivalent or possible superior to gold, however it needed to be reshined after a few weeks of wear to maintain its brilliance. If you shine it with this stuff be sure to give the ring a good clean with paint thinner or other nonpolar solvent. The residues may cause skin irritation or staining.

Fabio M (author)  nick1104969 months ago

Thank you for the useful suggestions you made about annealing and polishing.

Do you have a photo of your ring?

RobV329 months ago

last week i did make a ring out of a 50 eurocents coin after bearing it with a hammer and polishing i made the ring 17,5 mm internal and 22 mm external.

This size is perfect for my pinky.

I polished it to high gloss and untill now it causes no allergy and no staining of my finger.

Fabio M (author)  RobV329 months ago

Thanks for sharing.

Any photos to post?

Fabio M.

RobV32 Fabio M9 months ago
Hi Fabio

I have taken a photograph of my €0,50 coins ring.
Please keep in mind this was my first attempt what so ever.
For the moment i am pleased with it.
image.jpeg
mike_wood2 years ago

I just made a ring out of a 50 cent euro coin. It worked out really well - it took about four hours of tapping with a small hammer to widen the edge to about a 1/4 inch. I drilled out the middle and used a file to widen to leave only the stars on the inside edge.

image.jpgimage.jpg
Fabio M (author)  mike_wood2 years ago

It looks good.

Thanks for sharing.

Did you wear it?

Thanks, I can't quite fit it on my pinkie finger but it does fit my kids and wife. I made it for my son because he loves The Lord Of The Rings.
bubal3 years ago
Look up this video:

http://www.youtube.com/watch?v=Ow2OdXdiJ8w


Simon.

www.youtube.com/mopatin
rickharris3 years ago
For the three middle denominations, 10, 20 and 50 Euro cents, a nickel free metal sort with a golden colour was sought after. The choice finally fell on a relatively new material: Nordic Gold.

From http://www.fleur-de-coin.com/eurocoins/specifications

"Nordic Gold was originally developed more than 10 years ago for the Swedish Mint and is today being used for the Swedish 10 Crown coin. It is a brass alloy, made up from more than 89% of copper, 5% aluminium and 1% zinc.

By adding aluminium the material gets its pretty golden shine. For normal daily use the shine remains and the coins do not become mat. In contrast to brass or bronze Nordic Gold is difficult to produce, meaning that the risk of counterfeit is reduced.

Moreover there is great skill and technical knowledge required to make Nordic Gold into a coin. Because of the difficult processability the alloy is not used for industrial applications."

No idea how it might work - I expect it to be quite hard and in metal content worth less than 50 Euro.

You can buy sheet silver relatively cheaply if you would like to use a precious metal.

http://www.cooksongold.com/Sheet/

http://www.cooksongold.com/category_select.jsp?query=Fine+Silver+Disc+Fb18+26mm+X+1.0mm&queryFromSuggest=true

if you want to start from a disc.
You're going to have to vacuum melt it I bet, with the aluminium content.