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ASTM B817 Type II vs. Solder Alloy 121

ASTM B817 type II belongs to the titanium alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
21
Elongation at Break, % 3.0 to 13
25
Poisson's Ratio 0.32
0.43
Shear Modulus, GPa 40
7.5
Tensile Strength: Ultimate (UTS), MPa 900 to 960
32

Thermal Properties

Latent Heat of Fusion, J/g 400
29
Melting Completion (Liquidus), °C 1580
290
Melting Onset (Solidus), °C 1530
230
Specific Heat Capacity, J/kg-K 550
140
Thermal Expansion, µm/m-K 9.9
28

Otherwise Unclassified Properties

Base Metal Price, % relative 37
80
Density, g/cm3 4.6
11
Embodied Carbon, kg CO2/kg material 40
5.6
Embodied Energy, MJ/kg 650
93
Embodied Water, L/kg 220
580

Common Calculations

Stiffness to Weight: Axial, points 13
1.1
Stiffness to Weight: Bending, points 34
8.6
Strength to Weight: Axial, points 55 to 58
0.84
Strength to Weight: Bending, points 45 to 47
2.1
Thermal Shock Resistance, points 62 to 66
3.9

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.015
0
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0.35 to 1.0
0 to 0.020
Lead (Pb), % 0
83.4 to 85.5
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
0 to 0.1
Sodium (Na), % 0 to 0.2
0
Tin (Sn), % 1.5 to 2.5
14.5 to 15.5
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.4
0