EN 12163 CuNi2Be R620: High-Strength Low-Alloy Copper Alloy for Advanced Applications

CuNi2Be, mat. No CW110C, is counted among hardenable, low alloyed copper alloys. To the comparable make CuNi2Be, mat. No 2.0850, acc. to DIN 17666 : 1983-12 applies: The alloy shows high tensile strength and high temperature resistance and mean electrical and favorable thermal conductivity. Processing properties: hot and cold forming: good machinability: moderately hard and soft soldering: good gas shielded welding: good burnishing: good Application: For resistance welding electrodes as well as for springs. 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	8.8 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	110 - 130 GPa	Typical for Wrought Copper High Copper Alloy
Elongation	20.0 °C	10 %
Elongation A100	20.0 °C	6 %
Elongation A11.3	20.0 °C	8 %
Tensile strength	20.0 °C	620 MPa
Yield strength Rp0.2	20.0 °C	460 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.6E-5 - 1.8E-5 1/K	Typical for Wrought Copper High Copper Alloy
Melting point		855 - 1090 °C	Typical for Wrought Copper High Copper Alloy
Specific heat capacity	23.0 °C	360 - 420 J/(kg·K)	Typical for Wrought Copper High Copper Alloy

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	3.80E+7 S/m
Specific Electrical conductivity		65 % IACS

Chemical properties

Property	Value
Beryllium	0.2 - 0.6 %
Cobalt	0.3 %
Iron	0.2 %
Nickel	1.4 - 2.4 %

EN 12163 Grade CuNi1Si R590: High-Performance Hardened Copper Alloy EN 12163 Grade CuNi2Be R680 – High Strength, High Temperature Resistant Copper Alloy

Metal