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Solder Alloy 704 vs. C84800 Brass

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C84800 brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is C84800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
100
Elongation at Break, % 30
18
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 19
39
Tensile Strength: Ultimate (UTS), MPa 55
230

Thermal Properties

Latent Heat of Fusion, J/g 62
180
Melting Completion (Liquidus), °C 240
950
Melting Onset (Solidus), °C 220
830
Specific Heat Capacity, J/kg-K 220
370
Thermal Conductivity, W/m-K 50
72
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
16
Electrical Conductivity: Equal Weight (Specific), % IACS 15
17

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.6
Embodied Carbon, kg CO2/kg material 19
2.8
Embodied Energy, MJ/kg 320
46

Common Calculations

Stiffness to Weight: Axial, points 3.8
6.6
Stiffness to Weight: Bending, points 17
18
Strength to Weight: Axial, points 2.1
7.3
Strength to Weight: Bending, points 4.3
9.6
Thermal Diffusivity, mm2/s 30
23
Thermal Shock Resistance, points 3.5
8.2

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0050
Antimony (Sb), % 0 to 0.1
0 to 0.25
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
75 to 77
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.4
Lead (Pb), % 0 to 0.070
5.5 to 7.0
Nickel (Ni), % 0 to 0.010
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 94.3 to 95.2
2.0 to 3.0
Zinc (Zn), % 0 to 0.0010
13 to 17
Residuals, % 0
0 to 0.7