Table 262. 



CONDUCTIVITY OF THREE-METAL AND MISCELLANEOUS ALLOYS. 



Conductivity Ct=Co{i + at + ifl). 



Metals and alloys. 



Gold-copper-silver 



Nickel-copper-zinc 

 Brass .... 



" hard drawn 

 " annealed . 



German silver 

 It <i 



Aluminium bronze . . . 

 Phosphor bronze . . . 

 Silicium bronze . . . . 

 Manganese-copper . . . 

 Nickel-manganese-copper 



Nickelin 



Patent nickel 



Rheotan 



Copper-manganese-iron 



Manganin 



Composition by weight. 



58.3 Au + 26.5 Cu -f 15.2 Ag 

 66.5 Au -j- 154 Cu -j- 18. 1 Ag 

 7.4 Au-f 78.3 Cu+ 14.3 Ag 



i i2.S4Ni-f 30.59 Cu -f 

 \ 6.57 Zn by volume . . 



.} 



Various . . . 

 70.2Cu + 29.SZn 



Various 



( 6o.i6Cu + 25.37 Zn -f 

 } 1 4.03 Ni -f .30 Fe with trace 

 ( of cobalt and manganese . 



30 Mn -f- 7oCu 



3 Ni 4- 24 Mn + 73 Cu . . 



r 18.46 Ni -1-61.63 Cu-f 

 } 19.67 Zn -j- 0.24 Fe -|- 

 ( 0.19 Co -\- c.iSMn . . . 

 ( 25.1 Ni -I- 74.41 Cu-f 

 < 0.42 Fe -f- 0.23 Zn -f- 

 (0.13 Mn -j- trace of cobalt 



( 53.28 Cu -f 25.31 Ni -(- 

 } 16.89 Zn -|- 4.46 Fe -f- 

 (o.37Mn 



91 Cu 4- 7.1 Mn -|- i.gFe . 



70.6 Cu -|- 23.2 Mn -|- 6.2 Fe 



69.7 Cu -j- 29.9 Ni -f- 36 Fe . 



84 Cu-f- i2Mn-|-4Ni 



Co 



7.58 



6.83 

 28.06 



4.92 



I2.2-I5.6 

 12.16 



1435 



3-5 

 3-33 



7-5-8.5 

 10-20 



41 



1. 00 

 2.10 



3.01 



2.92 



1.90 



98 



30 

 60 



33 



aX : 



574 

 529 

 1830 



444 

 1-2 X 10' 



360 



5-7 X I02 



40 

 —30 



300 



190 

 410 



120 



22 

 120 



25 



14 



4 



3 



I 



— I 



6X loO 



924 



93 



72S0 



51 



Temp. C.° 

 IC-20 

 20-30 



30-35 

 35-40 

 40-45 



45-50 

 50-55 



55-68 



1 Matthieson. 



2 Various. 



3 W. Siemens. 



* Feusner and Lindeck. 



5 Van der Ven. 



6 Blood. 



^ Feusner. 

 2 Lindeck. 



Smithsonian Tables. 



2!;i 



