JK Findings Gold Filled Catalog

Terminology

Conversion Factors

Wire Hardness

To Go From

To

Multiply By

B&S No. Fractional

Description Dead Soft

Cold Work %

DS

0

Annealed

Carats Carats

DWT

0.128603

1 2 3 4 5 6 7 8 9

1/4 1/2 3/4 Full

Soft

10.7 20.7 29.4 37.1 44.1 50.1 56.2 60.5 65.1 68.6 72.1 75.1 77.5 80.3

Grams

0.2

Medium Med-Hard

Feet Feet

Millimeters

304.8 0.3048

Meters Carats

Hard

Grams Grams Grams Inches Inches

5

DWT

0.6430149 0.03215075

Extra Hard

Troy Ounces Millimeters

25.4

Spring Hard

Meters Inches

0.0254

Millimeters Millimeters

0.03937008 0.00328084

10 11 12 13 14

Extra Spring Hard

Feet

Meters Meters

Inches

39.37008 3.28084 7.775869 1.555174

Special Spring Hard

Feet

DWT DWT DWT

Carats Grams

Super Spring Hard

Troy Ounces

0.05

Troy Ounces Troy Ounces

DWT

20

Grams

31.10348

Wire Diameter

Inch

Millimeter

Gauge

Inch 0.036 0.040 0.045 0.051 0.057 0.064 0.072 0.081 0.091 0.102 0.114 0.128 0.144 0.162 0.182 0.208 0.229 0.258 0.289

Millimeter

Gauge

0.0040 0.0045 0.0050 0.0056 0.0063 0.0071 0.008 0.009 0.010 0.011 0.013 0.014 0.016 0.018 0.020 0.023 0.025 0.028 0.032

0.10 0.11 0.13 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32 0.36 0.41 0.46 0.51 0.58 0.64 0.72 0.81

38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20

0.91 1.02 1.15 1.29 1.45 1.63 1.83 2.05 2.30 2.59 2.91 3.26 3.66 4.12 4.62 5.19 5.83 6.54 7.35

19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2

1 CONVERSION GRID TO ESTIMATE AN ITEM WEIGHT IN DIFFERENT METALS

To use this grid, locate intersection of desired metal and present metal. This number is your conversion factor. Multiply that number by actual known weight of present metal, e.g., to determine what an item that weighs 1.50 dwt in Sterling would weigh in 14K Yellow, go to 14K Yellow under Desired Metal column. Follow that row across until it intersects the Sterling column. This is your conversion factor (in this case 1.248). Then multiply that num ber 1.248 (conversion factor) by 1.5 (known weight) = 1.872 dwt. This would be the weight for the 14KYellow item. PRESENT METAL DESIRED METAL 10K YELLOW 10K WHITE 14K YELLOW 14K WHITE 18K YELLOW 18K WHITE STERLING SILVER PLATINUM 10% lr PLATINUM ALLOY 24K FINE GOLD 10K YELLOW 1.000 1.045 0.885 0.918 0.743 0.790 1.105 0.539 0.537 1.377 0.599 10K WHITE 0.957 1.000 0.847 0.878 0.711 0.756 1.057 0.516 0.514 1.318 0.573 14K YELLOW 1.13 1.181 1.000 1.036 0.839 0.893 1.248 0.609 0.607 1.556 0.677 14K WHITE 1.090 1.139 0.965 1.000 0.809 0.861 1.204 0.588 0.585 1.501 0.653 18K YELLOW 1.347 1.407 1.192 1.236 1.000 1.064 1.488 0.726 0.723 1.855 0.806 18K WHITE 1.265 1.322 1.120 1.161 0.940 1.000 1.398 0.683 0.680 1.743 0.758 STERLING 0.905 0.946 0.801 0.830 0.672 0.715 1.000 0.488 0.486 1.246 0.542 PLATINUM 1.854 1.938 1.641 1.701 1.377 1.465 2.049 1.000 0.996 2.554 1.110 10% Ir 1.862 1.946 1.648 1.708 1.383 1.471 2.057 1.004 1.000 2.564 1.115 ALLOY 0.726 0.759 0.643 0.666 0.539 0.574 0.802 0.392 0.390 1.000 0.435 24K 1.670 1.745 1.478 1.532 1.240 1.320 1.845 0.901 0.897 2.300 1.000