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Poisson's Ratio of Copper Alloys

Room‑temperature Poisson's ratio values (dimensionless) for common copper alloys are listed below. Typical copper alloys fall in the range ν ≈ 0.30–0.35, but composition and temper can shift values slightly. For a broader context, see Poisson's Ratio of Metals and Material Properties.

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Poisson's Ratio Values for Copper Alloys (room temperature)
Copper Alloy Poisson's ratio, ν (dimensionless)
C11000 (Electrolytic tough pitch)0.33
C17200 (Beryllium‑copper)0.30
C22000 (Commercial bronze, 90%)0.31
C26000 (Cartridge brass)0.35
C36000 (Free‑cutting brass)0.34
C60600 (Aluminum bronze, 5%)0.326
C61300 (Aluminum bronze, 7%)0.312
C62300 (Aluminum bronze, 9%)0.328
C63000 (Nickel‑aluminum bronze)0.328
C71500 (Copper‑nickel, 30%)0.34
C81500 (Chromium copper)0.32
C93200 (Bearing bronze)0.34
C95800 (Propeller bronze)0.32
C96600 (Beryllium cupro‑nickel)0.33

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