Brass

Chemical Composition
Equivalents
Mechanical properties
Finishes
Tolerances

CHEMICAL COMPOSITION EN 12166

Designation of the material		Composition in % (mass fraction)
Designation of the material		Min. Cu	Max. Cu	Max. Fe	Max. Ni	Min. Pb	Max. Pb	Max. Sn	Min. Zn	Max. Al	Other elements (please see note)
Symbolic	Numerical	Min. Cu	Max. Cu	Max. Fe	Max. Ni	Min. Pb	Max. Pb	Max. Sn	Min. Zn	Max. Al	excluded
CuZn37	CW508L	62.0	64.0	0.1	0.3	-	0.1	0.1	Remainder	0.05	0.1
CuZn38Pb2	CW608N	60.0	61.0	0.2	0.3	1.6	2.5	0.2	Remainder	0.05	0.2
CuZn39Pb2	CW612N	59.0	60.0	0.3	0.3	1.6	2.5	0.3	Remainder	0.05	0.2

Including up to a maximum of 0.015% silver.
NOTE - The total of other elements (other than copper) is defined as the sum of Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, O, P, Pb, S, Sb, Se, Si, Sn, Te and Zn, subject to the exclusion of any individual elements specified.

			Approximate international equivalents
Classification of symbols	Numerical classification	European Standard (EN)	US (AISI)	Japan (JIS)	China (GB)
CuZn37	CW508L	EN 12166
CuZn39Pb2	CW612N	EN 12167

MECHANICAL PROPERTIES EN 12166:1998

Designations				Nominal thickness			Tensile strength Rm		Conventional yield strength at 0.2% Rp_0.2
Designations				mm			N/mm²		Conventional yield strength at 0.2% Rp_0.2
Material		State	Metallurgical condition	from	above	to	min.	max.	N/mm²
Classification of symbols	Numerical classification	State	Metallurgical condition	from	above	to	min.	max.	N/mm²
			R420	0.5	-	1.5	420	510	(280)
			R380	-	1.5	4.0	380	460	(260)
		1/8 Hard	H105	1.5	-	4.0	-	-	-
			R370	-	4.0	20.0	370	470	(250)
			H095	-	4.0	20.0	-	-	-
			R510	0.5	-	1.5	510	610	(420)
			R470	-	1.5	4.0	470	570	(390)
		1/4 Hard	H130	1.5	-	4.0	-	-	-
			R450	-	4.0	8.0	450	560	(350)
CuZn37	CW508L		H125	-	4.0	8.0	-	-	-
			R510	0.5	-	1.5	610	750	(610)
			R550	-	1.5	4.0	560	700	(570)
		1/2 Hard	H160	1.5	-	4.0	-	-	-
			R550	-	4.0	8.0	550	680	(550)
			H155	-	4.0	8.0	-	-	-
			R800	0.1	-	0.5	800	-	(640)
			R750	-	0.5	1.5	750	-	(760)
		Hard Spring	R700	-	1.5	4.0	700	-	(710)
			H190	1.5	-	4.0	-	-	-
			M
			R400	0.5	-	1.5	400	-	(200)
			R400	-	1.5	4.0	400	-	(250)
		1/4 Hard	H110	1.5	-	4.0	-	-	-
			R390	-	4.0	6.0	390	-	(188)
			R380	-	8.0	20.0	380	-	(180)
			H100	-	4.0	20.0	-	-	-
			R450	0.5	-	1.5	450	-	(300)
			R440	-	1.5	4.0	440	-	(300)
		1/2 Hard	H130	1.5	-	4.0	-	-	-
CuZn38Pb2 / CuZn39Pb2	CW608N / CW612N		R430	-	4.0	6.0	430	-	(300)
			R420	-	8.0	20.0	420	-	(300)
			H120	-	4.0	20.0	-	-	-
			R500	0.5	-	1.5	500	-	(433)
			R500	-	1.5	4.0	500	-	(433)
		Hard	H150	1.5	-	4.0	-	-	-
			R490	-	4.0	6.0	490	-	(406)
			R480	-	8.0	14.0	480	-	(406)
			H140	-	4.0	14.0	-	-	-
		Hard Spring	R570	1.5	-	4.0	570	-	(520)
			H165	1.5	-	4.0	-	-	-

Can be supplied with a tinned or nickel plated surface finish, or other finishes on request.

DIAMETER TOLERANCES OF ROUND WIRE EN12166

Nominal diameter value		Tolerances
From	To	Class A	Class B	Class C	Class D	Class E
-	0.25	± 0.005	-	-	-0.025;0	-0.006;0
0.25	0.5	± 0.005	-	-	-0.03;0	-0.010;0
0.5	1.0	± 0.012	-	-	-0.03;0	-0.014;0
1.0	2.0	± 0.02	-0.10;0	-0.05;0	0.0	-0.025;0
2.0	4.0	± 0.03	-0.10;0	-0.05;0	0.0	-0.025;0
4.0	8.0	± 0.04	-0.12;0	-0.05;0	-0.05;0	-0.030;0
8.0	10.0	± 0.06	-0.15;0	-0.09;0	-0.06;0	-0.035;0
10.0	18.0	± 0.08	-0.18;0	-0.11;0	-0.07;0	-0.040;0

STANDARD LENGTH TOLERANCES

NOMINAL LENGTH	TOLERANCE
L < = 1000 mm.	+/- 1 mm.
1000 < L < = 4000	- 0mm. / +3 mm.

* The data contained in this catalogue are for information purposes only and are not under any circumstances, contractual supply conditions. Errors and omissions excepted.

Wire

Brass