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Solder Alloy 704 vs. C99750 Brass

Solder alloy 704 belongs to the otherwise unclassified metals classification, while C99750 brass belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
110 to 120
Elastic (Young's, Tensile) Modulus, GPa 51
130
Elongation at Break, % 30
20 to 30
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 19
48
Tensile Strength: Ultimate (UTS), MPa 55
450 to 520

Thermal Properties

Latent Heat of Fusion, J/g 62
200
Melting Completion (Liquidus), °C 240
840
Melting Onset (Solidus), °C 220
820
Specific Heat Capacity, J/kg-K 220
410
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 15
2.2

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.1
Embodied Carbon, kg CO2/kg material 19
3.1
Embodied Energy, MJ/kg 320
51

Common Calculations

Stiffness to Weight: Axial, points 3.8
8.6
Stiffness to Weight: Bending, points 17
21
Strength to Weight: Axial, points 2.1
15 to 18
Strength to Weight: Bending, points 4.3
16 to 18
Thermal Shock Resistance, points 3.5
13 to 15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0.25 to 3.0
Antimony (Sb), % 0 to 0.1
0
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
55 to 61
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 1.0
Lead (Pb), % 0 to 0.070
0.5 to 2.5
Manganese (Mn), % 0
17 to 23
Nickel (Ni), % 0 to 0.010
0 to 5.0
Silver (Ag), % 4.8 to 5.2
0
Tin (Sn), % 94.3 to 95.2
0
Zinc (Zn), % 0 to 0.0010
17 to 23
Residuals, % 0
0 to 0.3