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C21000 Brass vs. C77000 Nickel Silver

Both C21000 brass and C77000 nickel silver are copper alloys. They have 60% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C21000 brass and the bottom bar is C77000 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.34
0.31
Rockwell B Hardness 36 to 73
52 to 99
Rockwell Superficial 30T Hardness 44 to 68
49 to 90
Shear Modulus, GPa 43
46
Tensile Strength: Ultimate (UTS), MPa 240 to 450
420 to 800

Thermal Properties

Latent Heat of Fusion, J/g 200
200
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 1070
1050
Melting Onset (Solidus), °C 1050
1000
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 230
29
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 57
6.0

Otherwise Unclassified Properties

Base Metal Price, % relative 30
31
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 2.6
4.1
Embodied Energy, MJ/kg 42
63
Embodied Water, L/kg 310
300

Common Calculations

Stiffness to Weight: Axial, points 7.2
8.1
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 7.4 to 14
14 to 27
Strength to Weight: Bending, points 9.6 to 15
15 to 23
Thermal Diffusivity, mm2/s 69
8.8
Thermal Shock Resistance, points 8.1 to 15
15 to 28

Alloy Composition

Copper (Cu), % 94 to 96
53.5 to 56.5
Iron (Fe), % 0 to 0.050
0 to 0.25
Lead (Pb), % 0 to 0.030
0 to 0.050
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
16.5 to 19.5
Zinc (Zn), % 3.7 to 6.0
22.7 to 30
Residuals, % 0
0 to 0.5

Comparable Variants