Fusible White Solder.—
| X.— | Copper | 57.4 parts |
|---|---|---|
| Zinc | 28 parts | |
| Tin | 14.6 parts |
Easily Fusible Solders.—
| XI.— | Brass | 5 parts |
|---|---|---|
| Zinc | 2.5 parts | |
| XII.— | Brass | 5 parts |
| Zinc | 5 parts |
Semi-White Hard Solders.—
| XIII.— | Copper | 53.3 parts |
|---|---|---|
| Zinc | 46.7 parts | |
| XIV.— | Brass | 12 parts |
| Zinc | 4 to 7 parts | |
| Tin | 1 part | |
| XV.— | Brass | 22 parts |
| Zinc | 10 parts | |
| Tin | 1 part | |
| XVI.— | Copper | 44 parts |
| Zinc | 49 parts | |
| Tin | 3.20 parts | |
| Lead | 1.20 parts |
Formulas XIII and XVI are fairly fusible.
White Hard Solders.—
| XVII.— | Brass | 20 parts |
|---|---|---|
| Zinc | 1 part | |
| Tin | 4 parts | |
| XVIII.— | Copper | 58 parts |
| Zinc | 17 parts | |
| Tin | 15 parts | |
| XIX.— | Brass | 11 parts |
| Zinc | 1 part | |
| Tin | 2 parts | |
| XX.— | Brass | 6 parts |
| Zinc | 4 parts | |
| Tin | 10 parts | |
| XXI.— | Copper | 57.44 parts |
| Zinc | 27.98 parts | |
| Tin | 14.58 parts |
For Brass Tubes.—I.—Copper, 100 parts; lead, 25 parts.