CW624N

CW624N, a leaded brass alloy, stands as a significant enhancement of the traditional 60/40 brass. It is the top choice for the mass production of brass components when the primary objectives are achieving peak output and maximizing tool lifespan. Moreover, it is the preferred option when no additional cold forming is needed following the machining process.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu55.0057.00
Pb1.603.00
Sn0.30
Fe0.30
Al0.500.50
Ni0.30
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO BS2874 (AS PER TEMPER M)
No Mechanical properties for this alloy. Mechanical properties as agreed between punchers and supplier.
PHYSICAL PROPERTIES
Electrical conductivity %IACS25
Thermal conductivity W/(m·K)113
Thermal expansion coefficient (0–300 °C) 10-6 /K 21.40
Density8.46 g/cm3
Modulus of elasticity96 Gpa
FABRICATION PROPERTIES 
Machinability (CuZn39Pb3 = 100 %)80%
Capacity for being cold workedPoor
Capacity for being hot workedExcellent
Resistance welding (butt weld)Fair
Inert gas shielded arc weldingPoor
Gas weldingPoor
Hard solderingFair
Soft solderingExcellent
Melting range880–895 °C
Hot working650–800 °C
Soft annealing  (1–3 h)450–600 °C
Thermal stress relieving (1–3 h)200–300 °C

CW624N

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