EN 12166 Grade CuNi18Zn20 R480 – High Strength, Corrosion-Resistant Copper Alloy

Material CuNi18Zn20, mat. No. CW409J is an alloy of high strength and hardness. To the comparabel mark CuNi18Zn20, mat. No. 2.0740, 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. Processing properties: warm forming: moderately cold forming: very good machinability: moderately hard and soft soldering: very good TIG-welding: very good burnishing: very good Application: In electrical engineering and electronics for springs, contacts, membranes as well as in precision engineering and in equipment manufacturing. In food industry, for musical instruments, glasses frames, safety keys as well as in construction trade for paneling, show-cases and stairrails.

Properties

General

Property	Temperature	Value
Density	20.0 °C	8.7 - 8.73 g/cm³

Mechanical

Property	Temperature	Value
Elastic modulus	20.0 °C	135 GPa
Elongation	20.0 °C	11 %
Elongation A100	20.0 °C	7 %
Elongation A11.3	20.0 °C	9 %
Poisson's ratio	20.0 °C	0.34 [-]
Tensile strength	20.0 °C	480 MPa
Yield strength Rp0.2	20.0 °C	250 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	20.0 °C	383 J/(kg·K)
Thermal conductivity	20.0 °C	33 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	3.30E+6 S/m
Specific Electrical conductivity		6 % IACS

Chemical properties

Property	Value
Copper	60 - 63 %
Iron	0.3 %
Lead	0.03 %
Manganese	0.5 %
Nickel	17 - 19 %
Tin	0.03 %

EN 10272 X2CrNiN23-4 Duplex Steel – Solution Annealed (+AT) – High Strength, Corrosion Resistance DIN 17440 X12CrMoS17 Soft Annealed Steel – Superior Corrosion Resistance & Versatile Industrial Uses

Metal