3364. Brass for Buttons

3364.    Brass for Buttons. Copper, 8 parts, and zinc 5 parts. This is the Birmingham platin.

3365. Pale Brass for Buttons, etc.

3365.    Pale Brass for Buttons, etc.. Melt together 16 parts fine light yellow brass (see No. 3359 (Fine Light Yellow Brass)), 2 parts zinc, and 1 part tin.

3366. Common Pale Brass

3366.    Common Pale Brass. Melt together 25 parts copper, 20 parts zinc, 3 parts lead, and 2 parts tin.

3367. Fine Pale Brass for Castings

3367.    Fine Pale Brass for Castings. Melt together 15 parts copper, 9 parts zinc, and 4 parts tin. This is rather brittle.

3368. Dark Brass for Castings

3368.    Dark Brass for Castings. Melt together 90 parts copper, 7 parts zinc, 2 parts tin, and 1 part lead. The color will be still deeper by using 2 parts less of zinc, and 1 part more each of copper and tin.

3369. Pale Brass for Gilding

3369.    Pale Brass for Gilding. Melt together copper, 64 parts; 32 parts zinc, 3 parts lead, and 1 part tin.

3370. Red Brass for Gilding

3370.    Red Brass for Gilding. Melt together 82 parts copper, 18 parts zinc, 3 parts tin, and 1 part lead.

3371. Brass for Solder

3371.    Brass for Solder. Melt together 12 parts fine yellow brass (see No. 3359 (Fine Light Yellow Brass)), 6 parts zinc, and 1 part tin. Used for ordinary brazing.

3372. Pale Brass for Turning

3372.    Pale Brass for Turning. Melt together 98 parts fine brass (see No. 3359 (Fine Light Yellow Brass)), and 2 parts lead.

3373. Red Brass for Turning

3373.    Red Brass for Turning. Melt together 65 parts copper, 33 parts zinc, 2 parts lead.

3374. Red Brass for Wire

3374.    Red Brass for Wire. Melt together 72 parts copper and 28 parts zinc, properly annealed.

3375. Pale Brass for Wire

3375.    Pale Brass for Wire. Melt together 64 parts copper, 34 parts zinc, and 2 parts lead.

3376. To Make Brass which Expands by Heat Equally with Iron

3376.       To Make Brass which Expands by Heat Equally with Iron. It is difficult to make a permanent joint between brass and iron, on account of their unequal expansion by heat. In a recent issue of the journal of " Applied Chemistry," a new alloy is given, for which the inventor claims an expansion by heat so nearly similar to that of iron, as to allow of a union between them, which, for all practical purposes, is permanent. This consists of a mixture of 79 parts copper, 15 parts zinc, and 6 parts tin.

3377. To Harden Brass

3377.      To Harden Brass. Brass is tempered or hardened by rolling or hammering ; consequently, if any object is to be made of tempered brass, the hardening must be done before working it into the required shape.