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C37700 Brass vs. C78200 Nickel Silver

Both C37700 brass and C78200 nickel silver are copper alloys. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C37700 brass and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 40
3.0 to 40
Poisson's Ratio 0.31
0.32
Rockwell B Hardness 45
65 to 90
Shear Modulus, GPa 39
43
Shear Strength, MPa 270
280 to 400
Tensile Strength: Ultimate (UTS), MPa 400
370 to 630
Tensile Strength: Yield (Proof), MPa 160
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 890
1000
Melting Onset (Solidus), °C 880
970
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 120
48
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
11
Electrical Conductivity: Equal Weight (Specific), % IACS 30
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
28
Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 2.6
3.3
Embodied Energy, MJ/kg 45
52
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 120
130 to 1440
Stiffness to Weight: Axial, points 7.1
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 14
12 to 21
Strength to Weight: Bending, points 15
14 to 19
Thermal Diffusivity, mm2/s 39
15
Thermal Shock Resistance, points 13
12 to 21

Alloy Composition

Copper (Cu), % 58 to 61
63 to 67
Iron (Fe), % 0 to 0.3
0 to 0.35
Lead (Pb), % 1.5 to 2.5
1.5 to 2.5
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
7.0 to 9.0
Zinc (Zn), % 35.7 to 40.5
20.2 to 28.5
Residuals, % 0
0 to 0.5