EN 12164 Grade CuNi18Zn19Pb1 R650 – High-Strength, Corrosion-Resistant Copper Alloy

Material CuNi18Zn19Pb1, mat. No. CW408J is an alloy of high strength and hardness. To the comparabel mark CuNi18Zn19Pb1, mat. No. 2.0790, acc. to DIN 17663 : 1983-12 applies: Strength is further increasable due to the high strain hardening capability. The material does not embrittle at low temperatures. Low electrical and thermal conductivity. The alloy is non-magnetic, corrosion resistance is better than for pure copper. Machinability improves by Pb-addition, ductility decreases and cold workabiliy deteriorates. Processing properties: warm forming: unfavorable cold forming: moderately machinability: good hard and soft soldering: very good TIG-welding: moderately burnishing: good Application: Particularly in precision engineering and in toolbuilding for turning and drilling parts, in electrical engineering and electronics as well as in shipbuilding and in construction trade.

Properties

General

Property	Temperature	Value
Density	20.0 °C	8.7 - 8.74 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	130 GPa
Poisson's ratio	23.0 °C	0.32 [-]	Typical for Wrought Copper Nickel Silver Grade
Tensile strength	20.0 °C	650 MPa
Yield strength Rp0.2	20.0 °C	580 - 600 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	300.0 °C	1.7E-5 1/K
Melting point		875 - 1135 °C	Typical for Wrought Copper Nickel Silver Grade
Specific heat capacity	23.0 °C	377 J/(kg·K)	Typical for Wrought Copper Nickel Silver Grade
Thermal conductivity	20.0 °C	33 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	3.20E+6 S/m
Specific Electrical conductivity		5 % IACS

Chemical properties

Property	Value
Copper	59.5 - 62.5 %
Iron	0.3 %
Lead	0.5 - 1.5 %
Manganese	0.7 %
Nickel	17 - 19 %
Tin	0.2 %

EN 12164 Grade CuNi12Zn30Pb1 R650: High-Strength, Corrosion-Resistant Copper Alloy EN 12166 CuZn39Pb0.5 H100 Copper Alloy Wire – Specifications & Properties

Metal