Alloyed Coppers are hardened with small quantities of Cr, Zr, Be, Ni, with the aim of increasing strength without greatly reducing electrical conductivity.

ISO	British	CEN	ASTM	Description
Designation	Standard	Number	Equivalent
CuCd1	C108		C16200	Copper-cadmium
CuCr1	CC101	CW105C	C18200	Copper-chromium
CuCr1Zr	CC102	CW106C		Copper-chromium-zirconium
CuNi1Si		CW109C	C191010	Copper-nickel-silicon
CuNi2Si	CC102	CW111C	C70250	Copper-nickel-silicon
CuNi3Si		CW112C	C70320	Copper-nickel-silicon
CuNi4AlSi				Copper-nickel aluminium silicon
CuNiP	C113	CW108C		Copper-nickel-phosphorus
CuBe2	CB101	CW101C	C17200	Copper-beryllium
CuBe2Pb		CW102C	C17300	Leaded copper-beryllium
CuNi2Be		CW110C	C17510	Copper-nickel-beryllium
CuCO2Be	C112	CW104C	C17500	Copper-cobalt-beryllium
CuCo1Ni1Be		CW103C		Copper-cobalt-beryllium
CuZr		CW120C	C15000	Copper-zirconium
CuSi2Mn		CW115C	C65100	Copper-silicon
CuSi3Mn1	CS101	CW116C	C65500	Copper-silicon
CuTeP	C109	CW118C	C14500	Copper-tellurium
CuSP	C111	CW114C	C14700	Copper-sulphur
CuPb1P		CW113C	C18700	Copper-lead
CuZn0.5		CW119C		Copper-zinc