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Solder Alloy 704 vs. C84000 Brass

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C84000 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
65
Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 30
27
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 19
42
Tensile Strength: Ultimate (UTS), MPa 55
250

Thermal Properties

Latent Heat of Fusion, J/g 62
190
Melting Completion (Liquidus), °C 240
1040
Melting Onset (Solidus), °C 220
940
Specific Heat Capacity, J/kg-K 220
380
Thermal Conductivity, W/m-K 50
72
Thermal Expansion, µm/m-K 22
18

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
3.0
Embodied Energy, MJ/kg 320
49

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.2
Stiffness to Weight: Bending, points 17
19
Strength to Weight: Axial, points 2.1
8.2
Strength to Weight: Bending, points 4.3
10
Thermal Diffusivity, mm2/s 30
22
Thermal Shock Resistance, points 3.5
9.0

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0050
Antimony (Sb), % 0 to 0.1
0 to 0.020
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Boron (B), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
82 to 89
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
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 0.010
0.5 to 2.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 94.3 to 95.2
2.0 to 4.0
Zinc (Zn), % 0 to 0.0010
5.0 to 14
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.7