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C85700 Brass vs. C97800 Nickel Silver

Both C85700 brass and C97800 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is C85700 brass and the bottom bar is C97800 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
130
Elongation at Break, % 17
10
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
48
Tensile Strength: Ultimate (UTS), MPa 310
370
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 170
220
Maximum Temperature: Mechanical, °C 120
230
Melting Completion (Liquidus), °C 940
1180
Melting Onset (Solidus), °C 910
1140
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 84
25
Thermal Expansion, µm/m-K 21
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
4.0
Electrical Conductivity: Equal Weight (Specific), % IACS 25
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 24
40
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 2.8
5.1
Embodied Energy, MJ/kg 47
76
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
31
Resilience: Unit (Modulus of Resilience), kJ/m3 59
120
Stiffness to Weight: Axial, points 7.2
8.1
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 11
12
Strength to Weight: Bending, points 13
13
Thermal Diffusivity, mm2/s 27
7.3
Thermal Shock Resistance, points 10
13

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 58 to 64
64 to 67
Iron (Fe), % 0 to 0.7
0 to 1.5
Lead (Pb), % 0.8 to 1.5
1.0 to 2.5
Nickel (Ni), % 0 to 1.0
24 to 27
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.050
0 to 0.15
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0.5 to 1.5
4.0 to 5.5
Zinc (Zn), % 32 to 40
1.0 to 4.0
Residuals, % 0 to 1.3
0 to 0.4