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C90500 Gun Metal vs. C77300 Nickel Silver

Both C90500 gun metal and C77300 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 51% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C77300 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 320
540

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1000
940
Melting Onset (Solidus), °C 850
920
Specific Heat Capacity, J/kg-K 370
390
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 11
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 35
26
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 3.6
3.5
Embodied Energy, MJ/kg 59
56
Embodied Water, L/kg 390
310

Common Calculations

Stiffness to Weight: Axial, points 6.9
7.7
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 10
19
Strength to Weight: Bending, points 12
19
Thermal Shock Resistance, points 12
17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.010
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 86 to 89
46 to 50
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0 to 0.3
0 to 0.050
Nickel (Ni), % 0 to 1.0
9.0 to 11
Phosphorus (P), % 0 to 1.5
0 to 0.25
Silicon (Si), % 0 to 0.0050
0.040 to 0.25
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0
Zinc (Zn), % 1.0 to 3.0
37.9 to 45
Residuals, % 0
0 to 0.5