I've seen credit cards with yellow contacts and with dull silver contacts. Does anybody know what is the material used for these two varieties?
TIA
Gold and silver ?
...R
Thanks for the reply. I thought of those two but it seems an expensive option for a credit card.
Thanks for the reply. I thought of those two but it seems an expensive option for a credit card.
There won't be very much of it. I'd guess you would need to recycle a large number of cards to get $100 worth of gold.
...R
There won't be very much of it. I'd guess you would need to recycle a large number of cards to get $100 worth of gold.
...R
Yes, if it's a precious metal the thickness is probably measured in 10/1000ths of an inch.
I believe the unit of measure for such things is µin (microinch).
Yes, if it's a precious metal the thickness is probably measured in 10/1000ths of an inch.
10/1000 = 1/100. If the gold was that thick my card would be worth more than the amount in my account.
I suspect microns is the more likely unit of measurement. Or the even smaller micro-inch that @Coding Badly mentioned. I never heard of micro-inch before - but that may be just because I am on the right side of the Atlantic.
...R
Or the even smaller micro-inch that @Coding Badly mentioned.
After a spot check a Digi-Key: That does seem to be a common unit for gold alloy contact coatings. 50 to 200 seems to be a common range.
A micro-inch is 0.0254 microns so 50 µin would be 1.27 microns.
...R
10/1000 = 1/100.
I misstated. My intent was .0001 inch. Apparently even that's much more than needed.
After a spot check a Digi-Key:
Wish I'd thought of that. I put 'credit card metal' and a few variations in the search bar and got lots of off-target results.
But, I did learn that there are metal credit cards (https://metal-creditcard.com/). Who knew?
I misstated.
I had figured that. I was just having fun.
...R