394 



TABLE 398.— RESISTIVITIES AT HIGH AND LOW TEMPERATURES (concluded) 

 (Ohm-cm unless stated otherwise.) 



TABLE 399.— SUPERCONDUCTIVITY OF SOME METALS 



Metal T°K 



Nb 9.22 



Pb 7.2 



La 5.2 



Ta 4.4 



V 4.3 



Hg 4.15 



Sn 3.71 



Metal T°K 



In 3.38 



Re 2.57* 



Tl 2.4 



Th 1.32 



Al 1.15 



Ga 1.12 



Zn 95t 



14S Smith, Thomas S., Ohio State University, private communication. 

 * Daunt. J. C, and Smith, T. S. t Daunt, J. C, and Heer, C. 



1324, 1948. 



Metal T°K 

 U 75 



Os 71 



Zr 54* 



Cd 54 



Ti 53t 



Ru 47 



Hf 35 



V., Phys. Rev., vol. 76, pp. 719 and 



TABLE 400.— SUPERCONDUCTIVITY OF SOME ALLOYS AND COMPOUNDS' 48 



NbC .... 

 TaC .... 

 Pb-As-Bi 

 Pb-Ri-Sb 

 Pb-Sn-Bi 



10.1 °K Pb-As alloy. 8.4°K 



9.2 MoC 7.7 



9.0 N 2 Pb 5 7.2 



8.9 Bi„Tl 3 6.5 



8.5 Sb,Tl, 5.5 



TaSi 4.2 



PbS 4.1 



Hg,Tl, 3.8 



ZrB 2.82 



WC 2.8 



Mo 2 C 2.4 



K W 2 C 2.05°K 



Au 2 Bi 1.84 



CuS 1.6 



TiN 1.4 



VN 1.3 



TiC 1.1 



un Smith, G. H.. and Wilhelm, J. O., Rev. Mod. Phys., vol. 7, p. 240, 1935. 



SMITHSONIAN PHYSICAL TABLES 



