Henley's Twentieth Century Formulas, Recipes and Processes

by Unknown

Solder For 22-carat Gold.

For 18-carat Gold.

For Cheaper Gold.

II.—Fine gold, 1 pennyweight; silver, 1 pennyweight; copper, 1 pennyweight.

Silver Solders

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

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

IV. (Soft.)—Copper, 14.75 parts; zinc, 8.50 parts; silver, 77.05 parts.

V.—Copper, 22.34 parts; zinc, 10.48 parts; silver, 67.18 parts.

VI.—Tin, 63 parts; lead, 37 parts.