
please note: Important! This fine silver is jewelry-quality, not medical-grade, material. Do not, under any circumstances, use Rio Grande silver material for colloidal purposes.
Comparing Silver Hardnesses
|
Vickers Hardness (dph) |
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|
Common Term |
Fine |
Sterling |
Argentium |
|
Soft (annealed) |
54 |
66-76 |
50-70 |
|
1/4-hard |
62-71 |
78-88 |
90-105 |
|
1/2-hard |
77-89 |
90-100 |
106-120 |
|
3/4-hard |
84-94 |
102-114 |
121-135 |
|
Hard |
89-103 |
116-130 |
136-148 |
|
Spring |
103-108 |
132-148 |
150-160 |
|
Age-hardened |
- |
100-120 |
100-120 |
|
Use this handy guide to quickly, easily and accurately convert gauge sizes into inches or millimeters—or vice versa. |
||
|
Gauge |
Inches |
Millimeters |
| 0 |
.325 |
8.26 |
| 2 |
.257 |
6.54 |
| 4 |
.204 |
5.19 |
| 6 |
.162 |
4.12 |
| 8 |
.128 |
3.26 |
| 10 |
.102 |
2.59 |
| 12 |
.081 |
2.05 |
| 13 |
.072 |
1.83 |
| 14 |
.064 |
1.63 |
| 15 |
.057 |
1.45 |
| 16 |
.051 |
1.29 |
| 18 |
.040 |
1.02 |
| 19 |
.036 |
.912 |
| 20 |
.032 |
.812 |
| 21 |
.028 |
.723 |
| 22 |
.025 |
.644 |
| 23 |
.023 |
.573 |
| 24 |
.020 |
.511 |
| 25 |
.018 |
.455 |
| 26 |
.016 |
.405 |
| 27 |
.014 |
.360 |
| 28 |
.013 |
.321 |
| 29 |
.011 |
.286 |
| 30 |
.010 |
.255 |
| 32 |
.0080 |
.2019 |
| 34 |
.0063 |
.1600 |
Recommended Metal Thickness
|
These recommendation are based on gold materials; we recommend increasing thickness 20%–25% for sterling silver materials to achieve comparable strength characteristics. |
|
|
For |
Use |
|
Rings and wedding bands |
.051"/1.29mm (women’s) |
|
Bezel material |
.008"–.013"/.2019–.3210mm |
|
Ear wires |
.025"–.032"/.644–.812mm |
|
Bracelets |
.040"–.064"/1.02–1.63mm |
|
Repoussé |
.020"–.025"/.511–.644mm |
|
Jump rings |
.025"–.050"/.644–1.02mm |
Common Conversions | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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