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C85200 Brass vs. C97800 Nickel Silver

Both C85200 brass and C97800 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is C85200 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, % 28
10
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
48
Tensile Strength: Ultimate (UTS), MPa 270
370
Tensile Strength: Yield (Proof), MPa 95
170

Thermal Properties

Latent Heat of Fusion, J/g 180
220
Maximum Temperature: Mechanical, °C 140
230
Melting Completion (Liquidus), °C 940
1180
Melting Onset (Solidus), °C 930
1140
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 84
25
Thermal Expansion, µm/m-K 20
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
4.0
Electrical Conductivity: Equal Weight (Specific), % IACS 19
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 26
40
Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 2.8
5.1
Embodied Energy, MJ/kg 46
76
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
31
Resilience: Unit (Modulus of Resilience), kJ/m3 42
120
Stiffness to Weight: Axial, points 7.0
8.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 8.9
12
Strength to Weight: Bending, points 11
13
Thermal Diffusivity, mm2/s 27
7.3
Thermal Shock Resistance, points 9.3
13

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.2
0 to 0.2
Copper (Cu), % 70 to 74
64 to 67
Iron (Fe), % 0 to 0.6
0 to 1.5
Lead (Pb), % 1.5 to 3.8
1.0 to 2.5
Nickel (Ni), % 0 to 1.0
24 to 27
Phosphorus (P), % 0 to 0.020
0 to 0.050
Silicon (Si), % 0 to 0.050
0 to 0.15
Sulfur (S), % 0 to 0.050
0 to 0.080
Tin (Sn), % 0.7 to 2.0
4.0 to 5.5
Zinc (Zn), % 20 to 27
1.0 to 4.0
Residuals, % 0 to 0.9
0 to 0.4