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Solder Alloy 715 vs. S31277 Stainless Steel

Solder alloy 715 belongs to the otherwise unclassified metals classification, while S31277 stainless steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is solder alloy 715 and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
210
Elongation at Break, % 21
45
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
80
Tensile Strength: Ultimate (UTS), MPa 30
860

Thermal Properties

Latent Heat of Fusion, J/g 61
310
Melting Completion (Liquidus), °C 220
1460
Melting Onset (Solidus), °C 220
1410
Specific Heat Capacity, J/kg-K 220
460
Thermal Expansion, µm/m-K 22
16

Otherwise Unclassified Properties

Density, g/cm3 7.3
8.1
Embodied Carbon, kg CO2/kg material 16
6.7
Embodied Energy, MJ/kg 270
90

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 1.1
29
Strength to Weight: Bending, points 2.9
25
Thermal Shock Resistance, points 1.9
19

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 0.020
Chromium (Cr), % 0
20.5 to 23
Copper (Cu), % 0.5 to 0.9
0.5 to 1.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
35.5 to 46.2
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 0 to 0.010
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 0.8 to 1.2
0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 97.4 to 98.7
0
Zinc (Zn), % 0 to 0.0010
0