EN 12167 Grade CuCr1Zr R370: High-Strength, Temperature-Stable Low-Alloy Copper Alloy

CuCr1Zr, mat. No CW106C, is counted among hardenable, low alloyed copper alloys. To the comparable make CuCrZr, mat. No 2.1293, acc. to DIN 17666 : 1983-12 applies: The strength values of CuCrZr are more favorable than of CuCr especially at higher temperatures. CuCrZr shows the following properties: high strength at room temperature, high temperature for removal of workhardening, high creep strength, no notch sensitivity at increased temperatures. Temperature for removal of workhardening approximates 500°C. Favorable electrical and thermal conductivity. Processing properties: hot and cold forming: good machinability: moderately soft soldering: moderately hard soldering: moderately gas shielded welding: moderately burnishing: good Application: For live springs and contacts, electrodes for resistance welding.

Properties

General

Property	Temperature	Value
Density	20.0 °C	8.8 - 8.92 g/cm³

Mechanical

Property	Temperature	Value
Elastic modulus	20.0 °C	130 GPa
Elongation	20.0 °C	16 %
Elongation A100	20.0 °C	8 %
Elongation A11.3	20.0 °C	12 %
Tensile strength	20.0 °C	370 MPa
Yield strength Rp0.2	20.0 °C	250 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	1.63E-5 1/K
	200.0 °C	1.7E-5 1/K
	300.0 °C	1.76E-5 1/K

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
Thermal conductivity	20.0 °C	320 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	4.30E+7 - 4.60E+7 S/m
Specific Electrical conductivity		74 - 79 % IACS

Chemical properties

Property	Value
Chromium	0.5 - 1.2 %
Iron	0.08 %
Silicon	0.1 %
Zirconium	0.03 - 0.3 %

ISO 683-4 Grade 35SPb20 – Quenched & Tempered Steel for Automotive & Machinery Parts ISO 683-4 Grade 38SMn28 Quenched & Tempered Steel: High-Strength Free-Cutting Material

Metal