Zinc white copper BZn18-26
Details:
Brand: BZn18-26 Standard: GB/T4423-1992
Features and Scope of application:
For the structure of copper-nickel, the alloy has a beautiful silver-white appearance, commonly known as German silver (originally Chinese silver), this alloy has high strength and corrosion resistance, good plasticity, in hot and cold state can withstand pressure processing well, machinability is not good, poor weldability, elasticity is better than QSn6.5-0.1.

Chemical composition：
copper Cu ：62.0～65.0
nickel+cobalt NiCo：13.5～16.5
zinc Zn：margin
lead Pb：≤0.02
phosphorus P：≤0.005
iron Fe：≤0.5
manganese Mn：≤0.3
silicon Si ：≤0.15
beryllium Sb ：≤0.002
sulfur S ：≤0.01
arsenic As ：≤0.010
carbon C：≤0.03
bismuth Bi：≤0.002
magnesium Mg：≤0.05
note：≤0.9(impurity)
Mechanical properties:
Tensile strength σb (MPa) : ≥440
Elongation δ10 (%) : ≥5
Note: longitudinal tensile mechanical properties of bars at room temperature
Sample size: diameter or opposite side distance 5 ~ 12
Heat treatment specification: casting temperature 1170℃; Annealing temperature 700 ~ 750℃; Rolling temperature 950 ~ 970℃; Low temperature annealing temperature to eliminate internal stress 250℃.

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Thickness of copper plate 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10 12 15 16 20-200mm
Copper rod diameter Φ3.0mm-315mm
Copper strip thickness 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.8 1.0 1.5 1.8 2.0mm
Copper wire diameter 0.1mm-4.0mm
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