CW623N

CW623N, a leaded brass alloy, represents a substantial enhancement over traditional 60/40 brass. This alloy is particularly well-suited for large-scale production of brass components where optimizing output and tool longevity are paramount considerations. Additionally, CW623N is ideal for applications where no additional cold forming is necessary after machining.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu61.0057.00
Pb1.603.00
Sn0.30
Fe0.30
Al0.05
Ni0.30
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12167

No Mechanical properties for this alloy. Mechanical properties as agreed between punchers and supplier.

PHYSICAL PROPERTIES
Electrical conductivity %IACS 25
Thermal conductivity W/(m·K) 113
Thermal expansion coefficient (0–300 °C) 10-6 /K 21.40
Density 8.46 g/cm3
Modulus of elasticity 96 Gpa
FABRICATION PROPERTIES 
Technique Suitability
Machinability (CuZn39Pb3 = 100 %) 80%
Capacity for being cold worked Poor
Capacity for being hot worked Excellent
Resistance welding (butt weld) Fair
Gas welding Poor
Hard soldering Fair
Soft soldering Excellent
Melting range 880–895 °C
Hot working 650–800 °C
Soft annealing (1–3 h) 450–600 °C
Thermal stress relieving (1–3 h) 200–300 °C

CW623N

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