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C84200 Brass vs. C97800 Nickel Silver

Both C84200 brass and C97800 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 75% of their average alloy composition in common.

For each property being compared, the top bar is C84200 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, % 15
10
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 40
48
Tensile Strength: Ultimate (UTS), MPa 250
370
Tensile Strength: Yield (Proof), MPa 120
170

Thermal Properties

Latent Heat of Fusion, J/g 180
220
Maximum Temperature: Mechanical, °C 150
230
Melting Completion (Liquidus), °C 990
1180
Melting Onset (Solidus), °C 840
1140
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 72
25
Thermal Expansion, µm/m-K 19
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
4.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 30
40
Density, g/cm3 8.5
8.8
Embodied Carbon, kg CO2/kg material 3.1
5.1
Embodied Energy, MJ/kg 51
76
Embodied Water, L/kg 350
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
31
Resilience: Unit (Modulus of Resilience), kJ/m3 72
120
Stiffness to Weight: Axial, points 6.9
8.1
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.2
12
Strength to Weight: Bending, points 10
13
Thermal Diffusivity, mm2/s 23
7.3
Thermal Shock Resistance, points 9.1
13

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.25
0 to 0.2
Copper (Cu), % 78 to 82
64 to 67
Iron (Fe), % 0 to 0.4
0 to 1.5
Lead (Pb), % 2.0 to 3.0
1.0 to 2.5
Nickel (Ni), % 0 to 0.8
24 to 27
Phosphorus (P), % 0 to 1.5
0 to 0.050
Silicon (Si), % 0 to 0.0050
0 to 0.15
Sulfur (S), % 0 to 0.080
0 to 0.080
Tin (Sn), % 4.0 to 6.0
4.0 to 5.5
Zinc (Zn), % 10 to 16
1.0 to 4.0
Residuals, % 0
0 to 0.4