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Solder Alloy 811 vs. S21800 Stainless Steel

Solder alloy 811 belongs to the otherwise unclassified metals classification, while S21800 stainless steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is solder alloy 811 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
190
Elongation at Break, % 38
40
Poisson's Ratio 0.35
0.28
Shear Modulus, GPa 19
75
Tensile Strength: Ultimate (UTS), MPa 53
740

Thermal Properties

Latent Heat of Fusion, J/g 63
340
Melting Completion (Liquidus), °C 200
1360
Melting Onset (Solidus), °C 190
1310
Specific Heat Capacity, J/kg-K 230
500
Thermal Expansion, µm/m-K 22
16

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.5
Embodied Carbon, kg CO2/kg material 14
3.1
Embodied Energy, MJ/kg 240
45
Embodied Water, L/kg 1200
150

Common Calculations

Stiffness to Weight: Axial, points 4.0
14
Stiffness to Weight: Bending, points 17
26
Strength to Weight: Axial, points 2.0
27
Strength to Weight: Bending, points 4.3
24
Thermal Shock Resistance, points 3.3
17

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), % 2.8 to 3.2
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
59.1 to 65.4
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0 to 0.010
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 87.8 to 89.7
0
Zinc (Zn), % 7.5 to 8.5
0