Table 309. 277 



CONDUCTIVITY OF THREE-METAL AND MISCELLANEOUS ALLOYS. 



Conductivity in mhos or 



ohms per cm. cube 



zCi=C^{i—at+ifi). 



Metals and alloys. 



Gold-copper-silver 

 << « II 



Nickel-copper-zinc 

 Brass .... 



" hard drawn 

 " annealed . 



German silver 



Aluminum bronze . . . 

 Phosphor bronze . . . 

 Silicium bronze . . . . 

 Manganese-copper . . . 

 N ickel-manganese-copper 



Nickelin 



Patent nickel 



Rheotan 



Copper-manganese-iron . 



Manganin . 

 Constantan 



Composition by weight. 



58.3 Au + 26.5 Cu -f 15.2 Ag 

 66.5 Au 4- 1 5-4 Cu 4- lo.i Ag 

 74 Au + 78.3 Cu + 14.3 Ag 



12.84 Ni -f 30.59 Cu -f ) 

 6.57 Zn by volume ... J 



Various 



70.2 Cu + 29.8 Zn .... 



Various 



( 60.16 Cu -f 25.37 Zn-f- 

 } 1 4.03 Ni -f .30 Fe with trace 

 ( of cobalt and manganese . 



30 Mn -f 70 Cu 



3 Ni -f 24 Mn -f 73 Cu . . 



( i8.46Ni + 61.63 Cu + 



< 19.67 Zn -\- 0.24 Fe + 



f 0.19 Co + 0.18 Mn . . . 

 ( 25.1 Ni + 74.41 Cu-f 



< 0.42 Fe + C.23 Zn -f- 

 (0.13 Mn + trace of cobalt 



( 53.28 Cu-f 25.31 Ni + 

 ] 16.89 Zn-f 4.46 Fe-f 

 (o.37Mn 



91 Cu 4- 7-1 Mn + i-9Fe . 



70.6 Cu + 23.2 Mn + 6.2 Fe 



69.7 Cu -|- 29.9 Ni + 0.3 Fe 



84CU4- i2Mn-f 4Ni . . 

 6oCu -|- 4oNi 



Co 



7-58 

 6.83 

 28.06 



4.92 



1 2. 2-1 5.6 

 12.16 

 1435 



3-S 



3-33 



7-S-8.5 

 10-20 



41 

 1. 00 

 2.10 



3.01 



2.92 



1.90 



4.98 

 1.30 

 2.60 



2-3 

 2.04 



aX 



574 

 529 

 1830 



444 

 1-2 X lo^ 



360 

 5-7 X io2 



40 

 —30 



300 

 190 



410 



120 

 22 

 120 



iXio^ 



924 



93 

 72S0 



51 



1 Matthiessen. 



2 Various. 



8 W. Siemens. 



* Feussner and Lindeck. 



^ Van der Ven. 

 8 Blood. 



^ Feussner. 



'' Jaeger-Diesselhorst. 



Smithsonian Tables. 



