Yellow Hard Solders
Description
This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
Yellow Hard Solders
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.
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