. The Iron and steel magazine. Fig. 16. Cu, 60%; Zn, 39-5%; Sn, Magnified 200 diam. Fig. 17. Cu, 60%; Zn, 39%; Sn, 1%.Magnified 200 Fig. 18. Cu, 54%; Zn, 40%; Sn, 6%. Fig. 19. Cu, 60%; Zn, 30%; Sn, 10%.Magnified 200 diam. Magnified 200 diam. Structure as the first one although it contains more copper andmore tin. Their structure recalls that of a brass containing55 per cent zinc. Copper Alloys 23 Maiiufaciure. — The production of these alloys does notcall for any special care. Like lead, the tin is added when readyto cast, a short time, before .removing the crucible from the fur-na
. The Iron and steel magazine. Fig. 16. Cu, 60%; Zn, 39-5%; Sn, Magnified 200 diam. Fig. 17. Cu, 60%; Zn, 39%; Sn, 1%.Magnified 200 Fig. 18. Cu, 54%; Zn, 40%; Sn, 6%. Fig. 19. Cu, 60%; Zn, 30%; Sn, 10%.Magnified 200 diam. Magnified 200 diam. Structure as the first one although it contains more copper andmore tin. Their structure recalls that of a brass containing55 per cent zinc. Copper Alloys 23 Maiiufaciure. — The production of these alloys does notcall for any special care. Like lead, the tin is added when readyto cast, a short time, before .removing the crucible from the fur-nace. Properties. — Brasses containing more than 4 per cent oftin can no longer be used, being extremely brittle and having afracture exhibiting large grains and a silver-gray 4 shows graphically the results of the testing of somebars which were rolled, drawn and reheated. These results show (i) that tin increases a little the tensilestrength, (2) that it increases a little the elastic limit, (3) thatiitrapidly decreases the elongation and reduction as soon as it 35So 252oAS 5 N , N \ > Diagram 4. 131 ZJI Tin
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectiron, bookyear1898
