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Solder Alloy 702 vs. Grade 25 Titanium

Solder alloy 702 belongs to the otherwise unclassified metals classification, while grade 25 titanium belongs to the titanium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is grade 25 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 21
11
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 19
40
Tensile Strength: Ultimate (UTS), MPa 53
1000

Thermal Properties

Latent Heat of Fusion, J/g 61
410
Melting Completion (Liquidus), °C 220
1610
Melting Onset (Solidus), °C 220
1560
Specific Heat Capacity, J/kg-K 220
560
Thermal Conductivity, W/m-K 62
7.1
Thermal Expansion, µm/m-K 22
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 18
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.4
4.5
Embodied Carbon, kg CO2/kg material 17
43
Embodied Energy, MJ/kg 290
700

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
35
Strength to Weight: Axial, points 2.0
62
Strength to Weight: Bending, points 4.2
50
Thermal Diffusivity, mm2/s 38
2.8
Thermal Shock Resistance, points 3.4
71

Alloy Composition

Aluminum (Al), % 0 to 0.0010
5.5 to 6.8
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
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.013
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.4
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0.3 to 0.8
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Silver (Ag), % 2.8 to 3.2
0
Tin (Sn), % 96.3 to 97.2
0
Titanium (Ti), % 0
86.7 to 90.6
Vanadium (V), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.4