  We consider the realistic case of a superconductor with a nonzero density of
elastic scatterers, so that the normal state conductivity is finite. The
quantum superconductor-metal (QSM) transition can then be tuned by varying
either the attractive electron-electron interaction, the quenched disorder, or
the applied magnetic field. We explore the consistency of the associated
scaling relations, Tc ~ 1/lamda(0) ~ gap(0) ~ 1/gsi(0) ~ Hc2(0)^-0.5 and Tc(H)
~ 1/Lamda(0,H) ~ gap(0,h) ~ (Hc2(0)-H)^ 1/2, valid for all dimensions D > 2,
with experimental data, in Al, C doped MgB2 and overdoped cuprates.
