Conversion Charts
conversion 1 
conversion 2 conversion 3
| Chart 1 |
Imperial to Metric
|
|
| To convert |
To |
Multiply by |
Reciprocal |
| oz troy |
gramme |
31.1035 |
0.03215 |
| oz avoir |
gramme |
28.3495 |
0.02834 |
| oz troy |
oz avoir |
1.0971 |
0.9115 |
| 1lb avior |
Kg |
0.4536 |
2.2046 |
| inch |
mm |
25.4 |
0.03937 |
| inch |
cm |
2.54 |
0.3937 |
| inch |
metre |
0.0254 |
39.37 |
| Chart 2 |
Bullion Stocks Technical Data
|
|
| Description |
Alloy Code |
Melting Range ºCentigrade |
Annealing Temp ºCentigrade |
Cooling Method |
| 9ct Yellow |
P |
905-960 |
650 |
1 |
| 9ct White |
HW |
975-1025 |
700 |
2 |
| 18ct Yellow |
HAB |
920-950 |
650 |
3 |
| 18ct White |
FW |
890-960 |
750 |
2 |
| Chart 3 |
General Sheet and Wire Alloys:
|
|
| Description |
Alloy Code |
Melting Range ºCentigrade |
Annealing Temp ºCentigrade |
Cooling Method |
| 9ct Yellow |
DF |
880-900 |
650 |
2 |
| 9ct White |
MW |
910-940 |
650 |
2 |
| 9ct Red |
MR |
900-960 |
650 |
2 |
| 14ct Yellow |
AY |
850-885 |
650 |
3 |
| 18ct Yellow |
HB |
895-930 |
650 |
3 |
| 18ct White |
MW |
1180-1235 |
750 |
3 |
| 18ct Red |
FR |
875-900 |
650 |
1 |
| 22ct Yellow |
DS |
965-980 |
650 |
3 |
| Fine Gold |
- |
1064 |
- |
- |
| Std. Silver |
- |
779-889 |
600 |
3 |
| Fine Silver |
- |
961 |
- |
- |
| Platinum 95% |
GW |
1727-1745 |
1000 |
3 |
| Pure Platinum |
- |
1775 |
- |
- |
|
1
|
Should be quenched from Above 500º C for full softening
|
|
2
|
Should not be quenched |
|
3
|
May be quenched once metal has cooled to a black heat (450º C-500º C) |
© Brian Saynor 2008 for Kongou Design
