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C87400 Brass vs. C97800 Nickel Silver

Both C87400 brass and C97800 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is C87400 brass and the bottom bar is C97800 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Elongation at Break, % 21
10
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 41
48
Tensile Strength: Ultimate (UTS), MPa 390
370
Tensile Strength: Yield (Proof), MPa 160
170

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 170
230
Melting Completion (Liquidus), °C 920
1180
Melting Onset (Solidus), °C 820
1140
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 28
25
Thermal Expansion, µm/m-K 18
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
4.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 27
40
Density, g/cm3 8.3
8.8
Embodied Carbon, kg CO2/kg material 2.7
5.1
Embodied Energy, MJ/kg 44
76
Embodied Water, L/kg 310
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
31
Resilience: Unit (Modulus of Resilience), kJ/m3 120
120
Stiffness to Weight: Axial, points 7.4
8.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
12
Strength to Weight: Bending, points 14
13
Thermal Diffusivity, mm2/s 8.3
7.3
Thermal Shock Resistance, points 14
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), % 79 to 85.5
64 to 67
Iron (Fe), % 0
0 to 1.5
Lead (Pb), % 0 to 1.0
1.0 to 2.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 2.5 to 4.0
0 to 0.15
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 5.5
Zinc (Zn), % 12 to 16
1.0 to 4.0
Residuals, % 0 to 0.8
0 to 0.4