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#1 2017-03-08 00:12:02

Ipv6Ready
Silver Stacker
From: North Sydney
Registered: 2016-01-08
Posts: 2,219
Trades :   39 

DIY alloying 24ct gold to 18ct etc

Hi I am sure some of you know the answer to this question.

I am in the process of making a Russian wedding ring (no I am not getting married).

The threee colours of PM will be
Rose gold 18ct
Yellow gold 18ct
Silver 999 pure silver

I am starting off bullion so all PM are pure. 24ct is way to soft, so I alloyed the gold to make it harder. by adding copper or silver

Rose gold at 75au/25cu was way way too hard, yellow gold at 25ag/75au too soft, so added extra silver or copper in the ratios below.

Rose - 4gm pure gold, 0.7gm copper - which makes 21ct (85% gold weight)
Yellow - 3gm pure gold, 0.3gm copper and 0.7gm silver - which makes 18ct (75% gold)

Yellow I got it to the right hardness, but my Rose Gold is still too hard, so can I add silver to soften my rose gold and bring it back down to 18ct or will adding silver to au and cu mix make it even harder? I dont mind adding extra gold to rose gold to make it softer, but rather not.

Note: I dont have a roller, so the band will be hammered, hence requiring reasonable softness to work the gold into a band plus pure silver band will be sacrificial in the middle (not brave enough to make white gold)


thanks in advance


WTB 4 to 6 grams of pure gold. Don't care if it is coin, bar or granules. Near spot, suits anyone who has been tempted to open a certicard or just have some granules to make a ring

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#2 2017-03-08 05:37:10

Trident
Member
From: Melbourne Australia
Registered: 2013-12-10
Posts: 68
Trades :   

Re: DIY alloying 24ct gold to 18ct etc

Annealing should be the key to making it softer and workable - frequent annealing to keep it workable especially after using hammers mandrels and tumblers.

Adding silver will change the colour but won't make it softer.

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The following 2 users say thank you for this post: Jislizard, Ipv6Ready

#3 2017-03-08 07:59:25

Ipv6Ready
Silver Stacker
From: North Sydney
Registered: 2016-01-08
Posts: 2,219
Trades :   39 

Re: DIY alloying 24ct gold to 18ct etc

Trident wrote:

Annealing should be the key to making it softer and workable - frequent annealing to keep it workable especially after using hammers mandrels and tumblers.

Adding silver will change the colour but won't make it softer.


The thing is even after annealing it is super hard. Maybe I'll have to add few more grams of gold.

Last edited by Ipv6Ready (2017-03-08 08:03:32)


WTB 4 to 6 grams of pure gold. Don't care if it is coin, bar or granules. Near spot, suits anyone who has been tempted to open a certicard or just have some granules to make a ring

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