USEFUL WEIGHT CONVERSIONS
METAL CONVERSION CHART & Wire Guage
These charts are provide a reasonable weight conversion within 10% or less
Use this conversion chart to convert the weight of wax to metal and one metal to another
for casting or for calculating a price.
| Platinum | fine gold | 18K | 14K | 10K | Sterling | Wax | |
| Platinum | 1.00 | 0.90 | 0.70 | 0.60 | 0.53 | 0.48 | 21.45 |
| F. Gold | 1.11 | 1.00 | 0.78 | 0.67 | 0.59 | 0.54 | 19.32 |
| 18K gold | 1.42 | 1.28 | 1.00 | .085 | 0.76 | 0.68 | 15.50 |
| 14K gold | 1.66 | 1.50 | 1.17 | 1.00 | 0.89 | 0.80 | 13.40 |
| 10K gold | 1.88 | 1.69 | 1.32 | 1.13 | 1.00 | 0.90 | 11.60 |
| Sterling | 2.06 | 1.87 | 1.46 | 1.25 | 1.11 | 1.00 | 10.40 |
| Wax | 21.45 | 19.32 | 15.50 | 13.40 | 11.60 | 1.40 | 1.00 |
Example: Convert wax to metal
Wax model weight x factor of metal wanted = weight of metal wanted
1 gram (wax) x 10.40 (sterling factor) = 10.40 gram sterling
Example: Finding weight of an object in a different metal than it is now.
Model weight in metal x factor of metal wanted = weight of metal wanted
Sterling Ring 10 gram. x 1.25 (14K gold factor) = 12.50 gram 14Kgold
This chart intended to provide a good indication with in a reasonable tolerance.
_______________________________________________________________________
For Sterling silver
Models in non ferrous metals to sterling silver.
|
Weight of model in |
|
Factor |
|
Weight in sterling silver |
|
Lead |
x |
.917 |
= |
Weight in sterling silver |
|
Pewter |
x |
1.09 |
= |
Weight in sterling silver |
|
Copper |
x |
1.16 |
= |
Weight in sterling silver |
|
Brass / Bronze |
x |
1.18 |
= |
Weight in sterling silver |
|
Tin |
x |
1.43 |
= |
Weight in sterling silver |
|
Zinc |
x |
1.46 |
= |
Weight in sterling silver |
|
Aluminum |
x |
3.85 |
= |
Weight in sterling silver |
|
Magnesium |
x |
5.98 |
= |
Weight in sterling silver |
____________________________________________________________________________________________________________________
For 10 Carat Gold
Models in non ferrous metals to 10K gold.
|
Weight of model in |
|
Factor |
|
Weight in 10K gold |
|
Lead |
x |
1.02 |
= |
Weight in 10K gold |
|
Pewter |
x |
1.22 |
= |
Weight in 10K gold |
|
Copper |
x |
1.30 |
= |
Weight in 10K gold |
|
Brass / Bronze |
x |
1.32 |
= |
Weight in 10K gold |
|
Tin |
x |
1.59 |
= |
Weight in 10K gold |
|
Zinc |
x |
1.62 |
= |
Weight in 10K gold |
|
Aluminum |
x |
4.30 |
= |
Weight in 10K gold |
|
Magnesium |
x |
6.67 |
= |
Weight in 10K gold |
________________________________________________________________________________________
For 14 Carat Gold.
Models in non ferrous metals to 14K gold
|
Weight of model |
Factor |
Weight in 14K gold |
||
|
Lead |
x |
1.18 |
= |
Weight in 14K gold |
|
Pewter |
x |
1.41 |
= |
Weight in 14K gold |
|
Copper |
x |
1.50 |
= |
Weight in 14K gold |
|
Brass / Bronze |
x |
1.52 |
= |
Weight in 14K gold |
|
Tin |
x |
1.84 |
= |
Weight in 14K gold |
|
Zinc |
x |
1.88 |
= |
Weight in 14K gold |
|
Aluminum |
x |
4.96 |
= |
Weight in 14K gold |
|
Magnesium |
x |
7.70 |
= |
Weight in 14K gold |
_____________________________________________________________________________________________________________________
For 18 Carat Gold
Ferrous metals to 18K gold.
|
Weight of model in |
|
Factor |
|
Weight in 18K gold |
|
Lead |
x |
1.37 |
= |
Weight in 18K gold |
|
Pewter |
x |
1.63 |
= |
Weight in 18K gold |
|
Copper |
x |
1.74 |
= |
Weight in 18K gold |
|
Brass / Bronze |
x |
1.76 |
= |
Weight in 18K gold |
|
Tin |
x |
2.13 |
= |
Weight in 18K gold |
|
Zinc |
x |
2.17 |
= |
Weight in 18K gold |
|
Aluminum |
x |
5.74 |
= |
Weight in 18K gold |
|
Magnesium |
x |
8.91 |
= |
Weight in 18K gold |
______________________________________________________________________
For Platinum
Models in non ferrous metals to platinum
|
Weight of model in |
|
Factor |
|
Weight in platinum |
|
Lead |
x |
1.89 |
= |
Weight in platinum |
|
Pewter |
x |
2.26 |
= |
Weight in platinum |
|
Copper |
x |
2.40 |
= |
Weight in platinum |
|
Brass / Bronze |
x |
2.44 |
= |
Weight in platinum |
|
Tin |
x |
2.94 |
= |
Weight in platinum |
|
Zinc |
x |
3.00 |
= |
Weight in platinum |
|
Aluminum |
x |
7.94 |
= |
Weight in platinum |
|
Magnesium |
x |
12.33 |
= |
Weight in platinum |
_______________________________________________________________________________
SPECIFIC GRAVITY CHART
|
Material |
Specific gravity |
|
Wax |
1.00 |
|
Magnesium |
1.74 |
|
Aluminum |
2.70 |
|
Zinc |
7.14 |
|
Tin |
7.29 |
|
Pewter |
9.50 |
|
Brass / Bronze |
8.80 |
|
Copper |
8.92 |
|
Sterling Silver |
10.40 |
|
Silver (fine silver) |
10.49 |
|
Lead |
11.34 |
|
10K Gold |
11.60 |
|
14K Gold |
13.40 |
|
18K Gold |
15.50 |
|
24K Gold (fine gold) |
19.32 |
|
Platinum |
21.45 |
_________________________________________________________________________________
|
American Wire or B & S gage table |
||||||
| AWG | Inches | mm | AWG | Inches | mm | |
| 50 | 0.001 | 0.025 | 29 | 0.0113 | 0.287 | |
| 49 | 0.0011 | 0.028 | 28 | 0.0126 | 0.32 | |
| 48 | 0.00124 | 0.031 | 27 | 0.0142 | 0.361 | |
| 47 | 0.0014 | 0.036 | 26 | 0.0159 | 0.404 | |
| 46 | 0.00157 | 0.04 | 25 | 0.0179 | 0.455 | |
| 45 | 0.00176 | 0.045 | 24 | 0.0201 | 0.511 | |
| 44 | 0.002 | 0.051 | 23 | 0.0226 | 0.574 | |
| 43 | 0.0022 | 0.056 | 22 | 0.0253 | 0.643 | |
| 42 | 0.0025 | 0.064 | 21 | 0.0285 | 0.724 | |
| 41 | 0.0028 | 0.071 | 20 | 0.032 | 0.813 | |
| 40 | 0.0031 | 0.079 | 19 | 0.0359 | 0.912 | |
| 39 | 0.0035 | 0.089 | 18 | 0.0403 | 1.02 | |
| 38 | 0.004 | 0.102 | 17 | 0.0453 | 1.15 | |
| 37 | 0.0045 | 0.114 | 16 | 0.0508 | 1.29 | |
| 36 | 0.005 | 0.127 | 15 | 0.0571 | 1.45 | |
| 35 | 0.0056 | 0.142 | 14 | 0.0641 | 1.63 | |
| 34 | 0.0063 | 0.16 | 13 | 0.072 | 1.83 | |
| 33 | 0.0071 | 0.18 | 12 | 0.0808 | 2.05 | |
| 32 | 0.008 | 0.203 | 11 | 0.0907 | 2.3 | |
| 31 | 0.0089 | 0.226 | 10 | 0.1019 | 2.6 | |
| 30 | 0.01 | 0.254 | ||||