 Division Watches and Jewelry |
Data sheet for alloy | |||
| Ag 925/177 | ||||
| Colour | white | Code | 177 | |
| General description | 925 o/oo Silver alloy, for universal use. It can easily be cupped, stamped, rolled, polished, drawn and machined. Suitable for casting |
|---|
| Physical properties | Specific gravity [g/cm3] | 10.35 | Melting range [°C] | 830-890 |
|---|
| Mechanical properties | Annealed | 20% cold worked | 90% cold worked | ||
|---|---|---|---|---|---|
| Vickers hardness | [HV1] | 65 | 105 | 150 | |
| Yield hardness | Rm | [Mpa] | 280 | 370 | 620 |
| Elastic limit | Rp0.2 | [MPa] | 140 | 340 | 550 |
| Plastic elongation | A | [%] | 35 | 3 | 1 |
| Processing guidelines | |
|---|---|
| ANNEALING | 650 °C for 20 to 30 minutes then quenched in water or cooling under protective atmosphere. In order to avoid oxidation, work under reducing atmosphere. |
| COLD WORKING | The amount of coldwork completed before annealing should be between 30% and 75% reduction in area. |
| SOLDERING | By torch or furnace. The cadmium-free solders N° 833 (740-760°C) - 832 (720-740°C) and 830 (680-695°C) are strongly recommended. For alternatives please see list of solders. |
| PICKLING | with DESOXYD (following operating instructions) or with hot 10% sulphuric acid. |
| - | - |
| - | - |
| 18.03.2005 | METALOR Technologies SA - Av. du Vignoble - CH-2009 Neuchâtel Phone: +41(0)32 720 61 11 - http://www.metalor.com/watch |
10.12.1999 |