I

Silver............ 10 parts

Brass............ 10 parts

II

Silver............ 20 parts

Copper........... 30 parts

Zinc............. 10 parts

III

Silver............ 30 parts

Copper........... 10 parts

Tin.............. 0.5 parts

IV

Silver............ 60 parts

Brass............ 60 parts

Zinc............. 5 parts

In those solders in which brass is used care should be taken that none of the metals employed contains iron. Even an inappreciable amount of iron deleteriously affects the solder.

V

Copper, 30 parts; zinc, 12.85 parts; silver, 57.15 parts.

VI

Copper, 23.33 parts; zinc, 10 parts; silver, 66.67 parts.

VII

Copper, 26.66 parts; zinc, 10 parts; silver, 63.34 parts.

VIII

Silver, 66 parts; copper, 24 parts, and zinc, 10 parts. This very strong solder is frequently used for soldering silver articles, but can also be used for soldering' other metals, such as brass, copper, iron, steel band-saw blades, etc.

IX

Silver, 4 parts, and brass, 3 parts.

X

A very refractory silver solder, which, unlike the silver solder containing zinc, is of great ductility and does not break when hammered, is composed of 3 parts silver and 1 part copper.