Critical temperatures for superconductors

Critical temperatures given in Kelvins

Material     Element/Alloy      Critical temperature(K)
=======================================================       
Aluminum -------- Element --------------- 1.20
Cadmium --------- Element --------------- 0.56
Lead ------------ Element --------------- 7.2
Mercury --------- Element --------------- 4.16
Niobium --------- Element --------------- 8.70
Thorium --------- Element --------------- 1.37
Tin ------------- Element --------------- 3.72 
Titanium -------- Element --------------- 0.39
Uranium --------- ELement --------------- 1.0
Zinc ------------ Element --------------- 0.91
Niobium/Tin ------ Alloy ---------------- 18.1
Cupric sulphide - Compound -------------- 1.6










Critical temperatures, high temperature superconuctors in Kelvins
Material                        Critical temperature(K)
=======================================================       
HgBa2Ca2Cu3O8+d ---------------- 150 (23.5 GPa pressure)
HgBa2Ca2Cu3O8+d ---------------- 133
Tl2Ba2Ca2Cu3O10 ---------------- 125
YBa2Cu3O7 ----------------------  90
La1.85Sr0.15CuO4 ----------------  40
Cs3C60 -------------------------  40 (15 Kbar pressure)
Ba0.6K0.4BiO3 -------------------  30
Nd1.85Ce0.15CuO4 ----------------  22
K3C60 --------------------------  19
PbMo6S8 ------------------------  12.6 


Note: all critical temperatures given at zero magnetic field strength.