Sigma-Aldrich
Copper-beryllium alloy, Cu98Be2
Copper-cobalt-beryllium alloy, Cu97Co2.5Be0.5
Copper-titanium alloy, Cu56.4Ti43.6
Copper/nickel
Copper/silver
Collagenase-Substrate Test Substance (for quantitative Collagenase-Determination)
Compression saddle for Ace Trubore® glass bearing
Constantan-resistance alloy, Cu55Ni45