CZ126

CZ126 is a brass alloy engineered to resist dezincification, boasting excellent cold working properties and a pure α-structure. It finds applications in environments with warm, acidic waters. Additionally, CZ126 is well-suited for various cold working operations such as coining, riveting, crimping, flanging, and cold extrusion.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu68.5071.50
Pb0.07
Fe0.05
As0.020.06
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO BS271 (AS PER TEMPER 1/2H)
Range (mm) From To UTS Min (N/mm²) PS Min (N/mm²) Elongation Min (%)

Hardness Min (HV)

Hardness Max

Round (Dia) 1.5 75 400 130
Hex (A/F) 3 70 400 130
Square (A/F) 3 60 400 130
PHYSICAL PROPERTIES
Electrical conductivity %IACS 28%
Thermal conductivity W/(m·K) 126
Thermal expansion coefficient (0–300 °C) 10-6/K 19.7
Density 8.55 g/cm3
Modulus of elasticity 114 Gpa
FABRICATION PROPERTIES 
Machinability (CuZn39Pb3 = 100 %) 25%
Capacity for being cold worked Excellent
Capacity for being hot worked Fair
Resistance welding (butt weld) Good
Inert gas shielded arc welding Fair
Gas welding Good
Hard soldering Excellent
Soft soldering Excellent
Melting range 910-965 °C
Hot working 750 – 870 °C
Soft annealing (1–3 h) 450–680 °C
Thermal stress relieving (1–3 h) 200–300 °C

CZ126

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