1. Chemical composition of CW624N

according to DIN EN 13388 (in % of mass)

Cu Zn Pb Ni Fe Sn Al Comment Other Elements
55,0- Rest 1,6- 0,30 0,30 0,30 0,05- 0,20
57,0 3,0 0,5

2. Mechanical properties of CW624N

according to DIN EN 12167 profiles/rods (common condition)

Condition Nominal thickness Tensile strength Yield strength Ultimate elongation Rigor
in mm Rm in MPa Rp0,2 in MPa in % (min.) HBS
over up to min max min max A50 A
A100
M all as manufactured – without specification of mechanical values
Physical properties General properties
(Guide values for 20° C)
Density of g/cm3 8,4  Resistance to:
Solidification range ° C 870-885 – organic materials 2
Electrical conductivity MS/m 16,4 – neutral / alkaline compounds 2
Thermal conductivity W/(mK) 126  Formability
Therm. linear expansion- – Warm 1
coeffizient 10-6/K 21,2 – Cold 5
Modulus of elasticity N/mm2 97.000
Connection works Surface treatment
– Gas-shielded welding 5 Mechanical polishing 2
– Gas welding 5 Electrolytic polishing 5
– Resistance welding (blunt) 5 Electroplating 1
– Hard soldering 3
– Soft soldering 1
Machinability
Generally 2

3. Main application / Special features of CW624N:

This alloy is often used for profiles with thin wall thicknesses or complex geometries.

* The maximum available nominal size of each condition depends on the shape required.