Palladum silver

Hi does any one out there know of a silver alloy that has a tiny
percent of palladium,which makes it much harder than sterling,does
not oxidize, very nice to work with,gets springy…work hardened?or
baked? the color is a steel Grey and not a silver white had seen a
sheet of it at a friends studio,she had acquired it from Germany some
time ago… if any one knows of the alloy …the makings of …or where
to purchase from please respond… to my e-mail address or on line.