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C69710 Brass vs. C74400 Nickel Silver

Both C69710 brass and C74400 nickel silver are copper alloys. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is C69710 brass and the bottom bar is C74400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 25
43
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 41
39
Shear Strength, MPa 300
240
Tensile Strength: Ultimate (UTS), MPa 470
350
Tensile Strength: Yield (Proof), MPa 230
120

Thermal Properties

Latent Heat of Fusion, J/g 240
180
Maximum Temperature: Mechanical, °C 160
140
Melting Completion (Liquidus), °C 930
930
Melting Onset (Solidus), °C 880
910
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 40
120
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
29

Otherwise Unclassified Properties

Base Metal Price, % relative 26
25
Density, g/cm3 8.3
8.2
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 44
48
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
120
Resilience: Unit (Modulus of Resilience), kJ/m3 250
63
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 16
12
Strength to Weight: Bending, points 16
14
Thermal Diffusivity, mm2/s 12
37
Thermal Shock Resistance, points 16
12

Alloy Composition

Arsenic (As), % 0.030 to 0.060
0
Copper (Cu), % 75 to 80
62 to 66
Iron (Fe), % 0 to 0.2
0 to 0.050
Lead (Pb), % 0.5 to 1.5
0 to 0.050
Manganese (Mn), % 0 to 0.4
0
Nickel (Ni), % 0
2.0 to 4.0
Silicon (Si), % 2.5 to 3.5
0
Zinc (Zn), % 13.8 to 22
29.6 to 36
Residuals, % 0
0 to 0.3