I'm no good with math, is there a way, with a calculator to determine the different weights or % of metals for a blend? Example, cu/al for "Nordic Gold" 89-11, if that's even the correct formula.. Thanks, John ,,,,,
Sure thing: If you have a set weight of copper that is the 89% part, say 4000 grams, then you are going to want to work out 1% of that 4000 grams. So 4000 divided by 89 equals 44.95 grams which is 1%. So you need to work out the 11% by multiplying the 44.94 grams by 11 which equals 494 grams. So for 4000 grams of copper you'll need 494 grams of aluminium.
My method would start with the total weight of what you need, then multiply that number by the percentage points of each ingredient in turn. Example; If you need a total of 32 oounces, with an alloy of say, 80-12-6-2, (take note of the decimal points) then 32 x .8=25.6oz; 32 x .12=3.84oz; 32 x .06=1.92oz; and 32 x .02=.64oz. That, however, does not account for any losses one might suffer during the melt, say for zinc burning up. Don't know how to take that into account. Roger
Seems like a perfect application for a spreadsheet and 'working' on casting while really 'at work' at a day job...unless your day job is casting and then it's just more of the same.
