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C68400 Brass vs. C78200 Nickel Silver

Both C68400 brass and C78200 nickel silver are copper alloys. They have 87% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 18
3.0 to 40
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 41
43
Shear Strength, MPa 330
280 to 400
Tensile Strength: Ultimate (UTS), MPa 540
370 to 630
Tensile Strength: Yield (Proof), MPa 310
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 840
1000
Melting Onset (Solidus), °C 820
970
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 66
48
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
11
Electrical Conductivity: Equal Weight (Specific), % IACS 99
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
28
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 2.7
3.3
Embodied Energy, MJ/kg 47
52
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 460
130 to 1440
Stiffness to Weight: Axial, points 7.5
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 19
12 to 21
Strength to Weight: Bending, points 19
14 to 19
Thermal Diffusivity, mm2/s 21
15
Thermal Shock Resistance, points 18
12 to 21

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Copper (Cu), % 59 to 64
63 to 67
Iron (Fe), % 0 to 1.0
0 to 0.35
Lead (Pb), % 0 to 0.090
1.5 to 2.5
Manganese (Mn), % 0.2 to 1.5
0 to 0.5
Nickel (Ni), % 0 to 0.5
7.0 to 9.0
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
20.2 to 28.5
Residuals, % 0 to 0.5
0 to 0.5