Table 400. 



2>^1 



CONDUCTIVITY AND RESISTIVITY OF MISCELLANEOUS ALLOYS. 



TEMPERATURE COEFFICIENTS. 



Conductivity in mhos or 



=7< = 7o(i — at-\-ht'') and resistivity in microhms— cm 



ohms per cm.'' 



=P<=Po(i+a'— &'=). 



Metals and alloys. 



Composition by weight. 



7o 



aXio^ 



Gold-copper-silver 



Nickel-copper-zinc 



Brass .... 



" hard drawn 



. " annealed . 



German silver . 



Aluminum bronze 



Phosphor bronze 



Silicium bronze . 



Manganese-copper , 

 Nickel-manganese- 

 copper . . . . 



Nickelin . . . . 



Patent nickel 



Rheotan . . . . 



Copper-manganes.e- 

 iron 



Copper-manganese- 

 iron 



Copper-manganese- 

 iron 



Manganin 

 Constantan . 



58.3AU-I-26.5CU+15.2 Ag 



66.5 Au-}- 15.4CU-I- 18.1 Ag 



7.4Au-t-78.3Cu+ 14.3 Ag 



ri2.84 Ni-f 30.59 Cu-f 

 \_ 6.57Zn by volume . 



Various 



70.2 Cu -f 29.8Zn . . 



.} 



Various 



60. 16 Cu 4- 25 . 37 Zn -(- 

 14.03 Ni -|-.3oFe with trace 

 of cobalt and manganese . 



30 Mn -(- 70 Cu . . . 



3 Ni -f- 24 Mn + Tz Cu . 



i8.46Ni-f 61.63 Cu-t- 



19.67 Zn +o.24Fe + 



0.19 Co-|- o.iSMn . 



25.1 Ni -f- 74.41 Cu-f 



0.42 Fe-f- 0.23 Zn -|- 



o. 13 Mn -f- trace of cobalt 



f53.28 Cu + 25.31 Ni-f- 

 16.89 Zn -t-4.46Fe-f- 

 0.37 Mn 



91 Cu-|- 7.1 Mn -1- i.9Fe 



70.6 Cu -f- 23 .2 Mn -f 6. 2 Fe 



69 . 7 Cu -f 29 . 9 Ni 4- o . 3 Fe 



84 Cu 4- 12 Mn 4- 4 Ni . . 

 60 Cu -j- 40 Ni , 



7.58 



6.83 



28.06 



4.92 



12. 2-15. 6 

 12.16 



14-35 



3-S 



7-5-8.5 

 10-20 



41 



1. 00 

 2.10 



3aE0i 

 2.92 



1.90 



4.98 

 1-30 

 2.60 



^■Z 



2.04 



574* 



529t 



1830$ 



444§ 

 1-2 X 10'' 



360 

 5-7X10= 



40 

 —30 



300 



190 



410 



120 



22 



120 



13.2 



14-6 



3.6 



20.3 



6.4-8.4 

 8.2 

 7-0 



20.-33. 

 30. 



12-13 



5-10 



2.4 



100, 

 48. 



34. 



53- 



20. 



17- 

 38. 



44- 

 49- 



^ Matthiessen. ^W. Siemens. ^ Van der Ven. 



"Various. * Feussner and Lindeck. 'Blood. 



*. t, t, §, b X io°=924, 93, 7280, 51, respectively. 



Smithsonian Tables. 



' Feussner. 



' Jaeger-Diesselhorst. 



