MakeItFrom.com
Menu (ESC)

Solder Alloy 721 vs. Titanium 15-3-3-3

Solder alloy 721 belongs to the otherwise unclassified metals classification, while titanium 15-3-3-3 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 721 and the bottom bar is titanium 15-3-3-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
100
Elongation at Break, % 17
5.7 to 8.0
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 19
39
Tensile Strength: Ultimate (UTS), MPa 50
1120 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 61
390
Melting Completion (Liquidus), °C 220
1620
Melting Onset (Solidus), °C 210
1560
Specific Heat Capacity, J/kg-K 220
520
Thermal Conductivity, W/m-K 56
8.1
Thermal Expansion, µm/m-K 22
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 17
2.3

Otherwise Unclassified Properties

Density, g/cm3 7.4
4.8
Embodied Carbon, kg CO2/kg material 17
59
Embodied Energy, MJ/kg 280
950

Common Calculations

Stiffness to Weight: Axial, points 3.8
12
Stiffness to Weight: Bending, points 17
32
Strength to Weight: Axial, points 1.9
64 to 80
Strength to Weight: Bending, points 4.1
50 to 57
Thermal Diffusivity, mm2/s 34
3.2
Thermal Shock Resistance, points 3.2
79 to 98

Alloy Composition

Aluminum (Al), % 0 to 0.0010
2.5 to 3.5
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0.8 to 1.2
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
2.5 to 3.5
Copper (Cu), % 0.3 to 0.7
0
Gold (Au), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.015
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.25
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Silver (Ag), % 2.3 to 2.7
0
Tin (Sn), % 95 to 96.6
2.5 to 3.5
Titanium (Ti), % 0
72.6 to 78.5
Vanadium (V), % 0
14 to 16
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.4