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Solder Alloy 135 vs. C68700 Brass

Solder alloy 135 belongs to the otherwise unclassified metals classification, while C68700 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is solder alloy 135 and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 27
110
Poisson's Ratio 0.41
0.32
Shear Modulus, GPa 9.5
41
Tensile Strength: Ultimate (UTS), MPa 35
390

Thermal Properties

Latent Heat of Fusion, J/g 36
190
Melting Completion (Liquidus), °C 250
970
Melting Onset (Solidus), °C 190
930
Specific Heat Capacity, J/kg-K 160
400
Thermal Conductivity, W/m-K 42
100
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.5
23
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
25

Otherwise Unclassified Properties

Base Metal Price, % relative 90
26
Density, g/cm3 10
8.3
Embodied Carbon, kg CO2/kg material 7.3
2.8
Embodied Energy, MJ/kg 120
46
Embodied Water, L/kg 720
340

Common Calculations

Stiffness to Weight: Axial, points 1.5
7.3
Stiffness to Weight: Bending, points 9.9
19
Strength to Weight: Axial, points 1.0
13
Strength to Weight: Bending, points 2.4
14
Thermal Diffusivity, mm2/s 27
30
Thermal Shock Resistance, points 3.5
13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
1.8 to 2.5
Antimony (Sb), % 0.5 to 1.8
0
Arsenic (As), % 0 to 0.030
0.020 to 0.1
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.080
76 to 79
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.060
Lead (Pb), % 67.1 to 70
0 to 0.070
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 29.5 to 30.5
0
Zinc (Zn), % 0 to 0.0010
17.8 to 22.2
Residuals, % 0
0 to 0.5