Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 237
Оглавление| For sheet | Copper | Zinc | Nickel | Lead | Iron |
|---|---|---|---|---|---|
| (French) | 50.0 | 31.3 | 18.7 | — | — |
| (French) | 50.0 | 30.0 | 20.0 | — | — |
| (French) | 58.3 | 25.0 | 16.7 | — | — |
| Vienna | 50.0 | 25.0 | 25.0 | — | — |
| Vienna | 55.6 | 22.0 | 22.0 | — | — |
| Vienna | 60.0 | 20.0 | 20.0 | — | — |
| Berlin | 54.0 | 28.0 | 18.0 | — | — |
| Berlin | 55.5 | 29.1 | 17.5 | — | — |
| English | 63.34 | 17.01 | 19.13 | — | — |
| English | 62.40 | 22.15 | 15.05 | — | — |
| English | 62.63 | 26.05 | 10.85 | — | — |
| English | 57.40 | 25. | 13.0 | — | 3.0 |
| Chinese | 26.3 | 36.8 | 36.8 | — | — |
| Chinese | 43.8 | 40.6 | 15.6 | — | — |
| Chinese | 45.7 | 36.9 | 17.9 | — | — |
| Chinese | 40.4 | 25.4 | 31.6 | — | 2.6 |
| Castings | 48.5 | 24.3 | 24.3 | 2.9 | — |
| Castings | 54.5 | 21.8 | 21.8 | 1.9 | — |
| Castings | 58.3 | 19.4 | 19.4 | 2.9 | — |
| Castings | 57.8 | 27.1 | 14.3 | 0.8 | — |
| Castings | 57. | 20.0 | 20.0 | 3.0 | — |
In some kinds of German silver are found varying quantities of iron, manganese, tin, and very frequently lead, added for the purpose of changing the properties of the alloy or cheapening the cost of production. But all these metals have a detrimental rather than a beneficial effect upon the general character of the alloy, and especially lessen its power of resistance to the action of dilute acids, one of its most valuable properties. Lead makes it more fusible; tin acts somewhat as in bronze, making it denser and more resonant, and enabling it to take a higher polish. With iron or manganese the alloy is whiter, but it becomes at the same time more refractory and its tendency toward brittleness is increased.
