Applebaum's Compositions

I

Copper....... 58 parts

Zinc......... 42 parts

II

Sheet brass. . . 85.42 parts Zinc......... 13.58 parts

Karmarsch's Composition

III

Brass........ 7       parts

Zinc......... 1       part

IV

Zinc......... 49       parts

Copper....... 44       parts

Tin.......... 4       parts

Lead........ 2       parts

Prechtl's Composition

V

Copper....... 53.3    parts

Zinc......... 43.1    parts

Tin.......... 1.3    parts

Lead........ 0.3    parts

All these hard-solder compositions

have the fine yellow color of brass, are very hard, and can be fused only at high temperatures. They are well adapted for all kinds of iron, steel, copper, and bronze.

Solders which fuse at somewhat lower temperatures and, therefore, well adapted for the working of brass, are the following:

VI

Sheet brass. .. 81.12 parts Zinc......... 18.88 parts

VII

Copper....... 54.08 parts

Zinc......... 45.29 parts

VIII

Brass........3 to 4 parts

Zinc.........1          part

A solder which is valuable because it can be wrought with the hammer, rolled out, or drawn into wire, and because it is tough and ductile, is the following:

IX

Brass........ 78.26 parts

Zinc......... 17.41 parts

Silver........ 4.33 parts

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.

II

A very strong solder for soldering brass tubes to be drawn, etc., is composed of 18 parts brass, 4 parts zinc, and 1 part fine silver.

For Fastening Brass to Tin

To 20 parts of fine, reduced copper, add sufficient sulphuric acid to make a stiff paste. To this add 70 parts of metallic mercury, and work in, at the same time applying heat until the mass assumes a wax-like consistency. Warm or heat the plates to be united, to about the same temperature, apply the mixture, hot, to each, then press together, and let cool.