EN 12163 CuZn36 R440 – Premium Unhardenable Wrought Copper Alloy

CuZn36 (CW507L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn33. Corrosion resistance is similar to pure copper. Processing properties: warm forming: good cold forming: very good machinability: moderately hard soldering: good soft soldering: very good TIG-welding: moderately burnishing: very good CuZn36 is used for deep drawing components, pressure and punching components as well as for clockfaces. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)

Properties

General

Property	Temperature	Value
Density	20.0 °C	8.4 - 8.45 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	110 GPa
	100.0 °C	106 GPa
	200.0 °C	102 GPa
	300.0 °C	97 GPa
	400.0 °C	89 GPa
	500.0 °C	79 GPa

Shear modulus	23.0 °C	40 GPa	Typical for Wrought Copper Brass
Tensile strength	20.0 °C	440 MPa
Yield strength Rp0.2	20.0 °C	400 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	150.0 °C	1.9E-5 1/K
	300.0 °C	2.1E-5 1/K
	650.0 °C	2.3E-5 1/K
	800.0 °C	2.4E-5 1/K

Melting point		875 - 1075 °C	Typical for Wrought Copper Brass
Specific heat capacity	20.0 °C	377 J/(kg·K)
Thermal conductivity	-200.0 °C	50 W/(m·K)
	20.0 °C	120 W/(m·K)
	200.0 °C	142 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	1.50E+7 S/m
	200.0 °C	1.20E+7 S/m

Electrical resistivity	20.0 °C	6.6E-8 Ω·m
	200.0 °C	8.3E-8 Ω·m

Chemical properties

Property	Value
Aluminium	0.02 %
Copper	63.5 - 65 %
Iron	0.05 %
Lead	0.05 %
Nickel	0.3 %
Tin	0.1 %

EN 1652 Grade CuZn37 H115 – High-Strength, Cold-Formable Copper Alloy EN 12163 Grade CuZn37 H105 – High-Performance Unhardenable Copper Alloy

Metal