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Solder Alloy 702 vs. AWS ERTi-2

Solder alloy 702 belongs to the otherwise unclassified metals classification, while AWS ERTi-2 belongs to the titanium 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 702 and the bottom bar is AWS ERTi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 21
20
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 19
40
Tensile Strength: Ultimate (UTS), MPa 53
340

Thermal Properties

Latent Heat of Fusion, J/g 61
420
Melting Completion (Liquidus), °C 220
1670
Melting Onset (Solidus), °C 220
1620
Specific Heat Capacity, J/kg-K 220
540
Thermal Conductivity, W/m-K 62
21
Thermal Expansion, µm/m-K 22
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 18
7.1

Otherwise Unclassified Properties

Density, g/cm3 7.4
4.5
Embodied Carbon, kg CO2/kg material 17
31
Embodied Energy, MJ/kg 290
510

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
35
Strength to Weight: Axial, points 2.0
21
Strength to Weight: Bending, points 4.2
24
Thermal Diffusivity, mm2/s 38
8.7
Thermal Shock Resistance, points 3.4
27

Alloy Composition

Aluminum (Al), % 0 to 0.0010
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
Carbon (C), % 0
0 to 0.030
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.0080
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.12
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Silver (Ag), % 2.8 to 3.2
0
Tin (Sn), % 96.3 to 97.2
0
Titanium (Ti), % 0
99.667 to 99.92
Zinc (Zn), % 0 to 0.0010
0