Among the common hard silver solders for first soldering are those made in the following proportions:

(1) 10 parts Brass, 5 parts Zinc, 1 part Copper, 19 parts Fine Silver.

(2) 3 parts Brass, 4 parts Fine Silver.

(3) 1 part Brass, 2 parts Fine Silver.

(4) 16 6-10 parts Zinc, 33 4-10 parts Copper, 50 parts Fine Silver.

(5) 11 parts Zinc, 25 7-10 parts Copper, 66 3-10 parts Fine Silver.

(6) 10 parts Zinc, 23 3-10 parts Copper, 66 7-10 parts Fine Silver.

(7) 35 parts Zinc, 157 parts Brass, 9 parts Fine Silver.

(8) 18 parts Zinc, 76 parts Brass, 6 parts Fine Silver.

(9) 1 part Zinc, 4 parts Brass, 11 parts Fine Silver.

(10) 1 part Zinc, 15 parts Brass, 16 parts Fine Silver.

A softer hard silver solder for after-soldering is variously composed as follows:

(1) 2 6-10 parts Copper, 1 part Zinc, 3 5-10 parts Medium-grade Silver.

(2) 4 5-10 parts Copper, 3 5-10 parts Zinc, 10 5-10 parts Medium-fine Silver.

(3) 3 3-10 parts Tin, 32 3-16 parts Copper, 16 1-10 parts Zinc, 48 3-10 parts Medium-grade Silver.

(4) 1 part Zinc, 7 parts Medium-grade Silver.

(5) 1 part Zinc, 16 parts Medium-grade Silver.

(6) 24 4-10 parts Copper, 10 5-10 parts Zinc, 67 1-10 parts Medium-grade Silver.

(7) 3 parts Copper, 1 part Zinc, 2 parts Medium-grade Silver.

(8) 2 3-10 parts Copper, 8 2-10 parts Zinc, 68 8-10 parts Medium-grade Silver.