 Division Watches and Jewelry |
Data sheet for alloy | |||
| Pt 950/3904 | ||||
| Colour | white | Code | 3904 | |
| General description | 950 o/oo Platinum alloy, recommended for machining. Can be stamped, rolled and drawn. Suitable for casting |
|---|
| Physical properties | Specific gravity [g/cm3] | 20.65 | Melting range [°C] | 1820-1835 |
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| Mechanical properties | Annealed | 20% cold worked | 75% cold worked | ||
|---|---|---|---|---|---|
| Vickers hardness | [HV1] | 140 | 190 | 220 | |
| Yield hardness | Rm | [Mpa] | 455 | 600 | 795 |
| Elastic limit | Rp0.2 | [MPa] | 290 | 570 | 785 |
| Plastic elongation | A | [%] | 25 | 3 | 2 |
| Processing guidelines | |
|---|---|
| ANNEALING | 1000 °C for 20 to 30 minutes under neutral atmosphere. Cooling type unimportant. In order to avoid oxidation, work under neutral atmosphere (nitrogen |
| COLD WORKING | The amount of coldwork completed before annealing should be between 30% and 75% reduction in area. |
| SOLDERING | By torch or furnace. The Platinum solders N° 286 (1430-1450 °C) - 2182 (1345-1375 °C) - 283 (1250-1300 °C) and 281 (1050-1115 °C) are strongly recommended. For alternatives please see list of solders. |
| PICKLING | Unnecessary |
| CASTING | The use of Univest+ (see enclosed document) is recommended. |
| - | - |
| 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 |