“BEHAVIOUR OF MATERIALS IN TESTING MACHINE 183 
§ 2 gf , in ' 
E 
Fe 3 1 
a 7 i, ¥ | \, , 
 Per{wo 90 60 +70 +60 SO 40 30 20 10 0 Copper. 
cent | 0 10 20 30 386: 40 50 60 70 ~=—s «80 90 100Zinc. 
The full lines T,, T,. and T, show tenacities. 
The dotted lines EK, and KE, show elongations. 
The lines T, and E, refer to tests by Charpy, the test pieces being completely 
annealed, 
The lines T, and E, refer to tests by Thurston on cast brasses. 
The line T; refers to tests by the alloys research committee on worked rods. - 
Fig. 255. 
173. Tests of Copper-Tin Alloys.—The curves in Fig. 256 show the 
7/40 ry 
th 
Se 
ie § 
f 
a 4 
S 
} 16 
i 
4, 48 
Pt es 0 
40 50 60 70 80 90 gd pict 
60 50 40 30 20 0 O Scent. 
Fia. 256, 
: copper and tin. These curves represent the results of tests made by 
Professor Thurston. * 
* Proceedings of the Institution of Mechanical Engineers, 1895, Plate 43. 
