MakeItFrom.com
Menu (ESC)

Solder Alloy 721 vs. Grade 20 Titanium

Solder alloy 721 belongs to the otherwise unclassified metals classification, while grade 20 titanium belongs to the titanium alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 721 and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
120
Elongation at Break, % 17
5.7 to 17
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 19
47
Tensile Strength: Ultimate (UTS), MPa 50
900 to 1270

Thermal Properties

Latent Heat of Fusion, J/g 61
400
Melting Completion (Liquidus), °C 220
1660
Melting Onset (Solidus), °C 210
1600
Specific Heat Capacity, J/kg-K 220
520
Thermal Expansion, µm/m-K 22
9.6

Otherwise Unclassified Properties

Density, g/cm3 7.4
5.0
Embodied Carbon, kg CO2/kg material 17
52
Embodied Energy, MJ/kg 280
860

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
33
Strength to Weight: Axial, points 1.9
50 to 70
Strength to Weight: Bending, points 4.1
41 to 52
Thermal Shock Resistance, points 3.2
55 to 77

Alloy Composition

Aluminum (Al), % 0 to 0.0010
3.0 to 4.0
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
5.5 to 6.5
Copper (Cu), % 0.3 to 0.7
0
Gold (Au), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.020
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.3
Lead (Pb), % 0 to 0.070
0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Silver (Ag), % 2.3 to 2.7
0
Tin (Sn), % 95 to 96.6
0
Titanium (Ti), % 0
71 to 77
Vanadium (V), % 0
7.5 to 8.5
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4