Beryllium Copper Alloys Chemical Compositions (% by weight) - Extract from EN 1652, 1654

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Material Designation EN 1652, 1654 or (Alloy)		Nearest Fit		Cu	Be	Co	Fe max	Mn max	Ni	P	Pb max	Sn	Zn	OTHERS	Impurities max
Symbol	Number	UNS	BS 2870	Cu	Be	Co	Fe max	Mn max	Ni	P	Pb max	Sn	Zn	OTHERS	Impurities max
( Alloy 174 )		C17410	-	Rem'	0.15 - 0.5	0.35 - 0.6									0.50
CuBe1.7	CW100C	C17000	CB101	Rem'	1.6 - 1.8	0.30 max	0.20 max		0.30 max						0.50
CuBe2	CW101C	C17200	-	Rem'	1.8 - 2.1	0.30 max	0.20 max		0.30 max						0.50
( 1.8% Be/Cu )		C17200	CB101	Rem'	1.7 - 1.9	*			*					* (Ni + Co) 0.05 - 0.40	0.50
( Alloy 25 )		C17200	-	Rem'	1.8 - 2.0	*	*		*		0.02			* (Ni + Co) 0.2 min *(Co + Ni + Fe) 0.6 max	0.50
( Alloy 165 )		C17000	-	Rem'	1.6 - 1.79	*	*		*					* (Ni + Co) 0.2 min *(Co + Ni + Fe) 0.6 max	0.50