Tables 310 {ci)niinued)-2\ 1 . 

 TABLE 310. — Condactlne Power ol AII07S. 



279 



Group 3. 



Alloys. 



Gold-copper t 



" t 



Gold-silver t 

 " t 

 " t 



Gold-copper t 



" t 



Platinum-silver t 



" t 



Palladium-silver t 



Copper-silver t 



" t 



" t 



" t 



" t 



Iron-gold t 



" " t ." 



Iron-copper t 



Phosphorus-copper t 

 Arsenic-copper t . 



« t ! 



Weight % 



Volume % 



Co 



of first named. 



99-23 

 90.55 



87.95 



87.95 

 64.80 

 64.80 

 31-33 

 31-33 



34-83 

 1.52 



33-33 

 9.81 

 5.00 



25.00 



98.08 

 94.40 

 76.74 

 42.75 

 7.14 

 1-31 



13-59 

 9.80 

 4.76 



0.40 



2.50 

 0.95 



5.40 



2.80 



trace 



98-36 

 81.66 



79.86 

 79.S6 

 52.08 

 52.08 

 19.86 

 19.86 



19.17 

 0.71 



19.65 



5-oS 

 2.51 



23.28 



98-35 

 95-17 

 77.64 

 46.67 

 8.25 

 1-53 



27-93 

 21.18 

 10.96 



0.46 



35-42 

 10.16 



13.46 



13.61 



9.48 



9-51 

 13.69 



13-73 



12.94 

 53-02 



4.22 

 11.38 

 19.96 



5-38 



56-49 

 51-93 

 44.06 

 47.29 

 50.65 

 50.30 



1-73 

 1.26 

 1.46 



24.51 



4.62 

 14.91 



3-97 

 8.12 



38-52 



2650 

 749 



1090 

 1 140 



673 

 721 

 885 

 908 



864 

 3320 



330 



774 

 1240 



324 



3450 

 3250 



3030 

 2870 

 2750 

 4120 



3490 



2970 



487 



1550 



476 

 1320 



516 



736 

 2640 



b X io» 



4650 

 81 



793 

 1160 

 246 

 495 

 531 

 641 



570 

 7300 



208 

 656 

 1 150 



154 



7990 

 6940 

 6070 

 5280 

 4360 

 8740 



7010 



1220 



103 



2090 



145 

 1640 



446 

 4830 



Variation per loo'' C. 



Observed. 



Calculated 



21.87 

 7.41 



10.09 



10.21 



6.49 



6.71 



8.23 

 8.44 



8.07 

 25.90 



3.10 



7.08 



11.29 



340 



26.50 



25-57 

 24.29 

 22.75 



23-17 

 26.51 



27.92 



17-55 

 3-84 



13-44 



23.22 

 7-53 



9-65 

 9-59 

 6.58 

 6.42 

 8.62 

 8.31 



8.18 

 25.86 



3.21 



7.25 



4.21 



27.30 

 25.41 

 21.92 

 24.00 



25-57 

 29.77 



14.70 

 11.20 

 13.40 



14.03 



* Annealed. 



t Hard-drawn. 



TABLE 311. — Allowable Carrying Capacity of Rubber-covered Copper Wires. 



(For inside wiring — Nat. Board Fire Underwriters' Rules.) 



Smithsonian Tables. 



