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C87500 Brass vs. Solder Alloy 121

C87500 brass belongs to the copper alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 24 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 C87500 brass and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
21
Elongation at Break, % 18
25
Poisson's Ratio 0.33
0.43
Shear Modulus, GPa 42
7.5
Tensile Strength: Ultimate (UTS), MPa 460
32

Thermal Properties

Latent Heat of Fusion, J/g 260
29
Melting Completion (Liquidus), °C 920
290
Melting Onset (Solidus), °C 820
230
Specific Heat Capacity, J/kg-K 410
140
Thermal Conductivity, W/m-K 28
31
Thermal Expansion, µm/m-K 18
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 27
80
Density, g/cm3 8.3
11
Embodied Carbon, kg CO2/kg material 2.7
5.6
Embodied Energy, MJ/kg 44
93
Embodied Water, L/kg 300
580

Common Calculations

Stiffness to Weight: Axial, points 7.4
1.1
Stiffness to Weight: Bending, points 19
8.6
Strength to Weight: Axial, points 16
0.84
Strength to Weight: Bending, points 16
2.1
Thermal Diffusivity, mm2/s 8.3
20
Thermal Shock Resistance, points 17
3.9

Alloy Composition

Aluminum (Al), % 0 to 0.5
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 79 to 85
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0 to 0.5
83.4 to 85.5
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 3.0 to 5.0
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
14.5 to 15.5
Zinc (Zn), % 12 to 16
0 to 0.0010
Residuals, % 0 to 0.5
0