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Solder Alloy 702 vs. ASTM B817 Type II

Solder alloy 702 belongs to the otherwise unclassified metals classification, while ASTM B817 type II 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 702 and the bottom bar is ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
100
Elongation at Break, % 21
3.0 to 13
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 19
40
Tensile Strength: Ultimate (UTS), MPa 53
900 to 960

Thermal Properties

Latent Heat of Fusion, J/g 61
400
Melting Completion (Liquidus), °C 220
1580
Melting Onset (Solidus), °C 220
1530
Specific Heat Capacity, J/kg-K 220
550
Thermal Expansion, µm/m-K 22
9.9

Otherwise Unclassified Properties

Density, g/cm3 7.4
4.6
Embodied Carbon, kg CO2/kg material 17
40
Embodied Energy, MJ/kg 290
650

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
34
Strength to Weight: Axial, points 2.0
55 to 58
Strength to Weight: Bending, points 4.2
45 to 47
Thermal Shock Resistance, points 3.4
62 to 66

Alloy Composition


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Aluminum (Al), % 0 to 0.0010
5.0 to 6.0
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 0.1
Chlorine (Cl), % 0
0 to 0.2
Copper (Cu), % 0 to 0.050
0.35 to 1.0
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
0.35 to 1.0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 2.8 to 3.2
0
Sodium (Na), % 0
0 to 0.2
Tin (Sn), % 96.3 to 97.2
1.5 to 2.5
Titanium (Ti), % 0
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.4