Compute weight of sterling silver to volume

Jewelry Discussion
1

Compute weight of sterling silver to volume of an ingot?

Hi, all - I’m definitely not the brightest bunny in the hutch and
need help to figure out the following:

Exactly how many weighed ounces/drams of sterling silver scrap would
melt to fill a certain volume of an [such as 70 x 40 x 4mm] ingot
mold?

There must be a forumulaout there, or a number that just tells you
how many weighed ounces/dwt whatever are in a mm3… Right?

Thanks - Bob

2

weight = specific gravity X volume in cubic cm
specific gravity of sterling silver = 10.4 grams/cubic cm

3 
Exactly how many weighed ounces/drams of sterling silver scrap
would melt to fill a certain volume of an [such as 70 x 40 x 4mm]
ingot mold?

Look up the density of Sterling silver; it’s 10.5. That means that
1cc of silver weighs 10.5gms.

Next calculate the volume of the mold in cc, which, in your case is 7
x 4 x 0.4 = 11.2cc

Since each cc will weigh 10.5gms, the total weight to fill the mold
will be 11.2 x 10.5 = 117.6gms

Since your mold is measured in metric, it’s probably easiest to
weigh the silver in metric, in which case you need 117.6gms of scrap.

If you really want the weight in Imperial units, 117.6gms = 4.148175
oz Since 1oz = 16drams, you need 4.148175 x 16 = 66.3708 drams.

If you want to work directly in drams, then 10.5gms = 5.926drams.

so 11.2cc of silver will weigh 11.2 x 5.926 = 66.3708 drams

Regards, Gary Wooding