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S21904 Stainless Steel vs. Solder Alloy 171

S21904 stainless steel belongs to the iron alloys classification, while solder alloy 171 belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is solder alloy 171.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
16
Elastic (Young's, Tensile) Modulus, GPa 200
38
Elongation at Break, % 17 to 51
45
Poisson's Ratio 0.28
0.39
Shear Modulus, GPa 78
14
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
48

Thermal Properties

Latent Heat of Fusion, J/g 290
47
Melting Completion (Liquidus), °C 1400
180
Melting Onset (Solidus), °C 1350
180
Specific Heat Capacity, J/kg-K 480
190
Thermal Conductivity, W/m-K 14
50
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
12
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
12

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.8
Embodied Carbon, kg CO2/kg material 3.0
13
Embodied Energy, MJ/kg 43
210

Common Calculations

Stiffness to Weight: Axial, points 14
2.4
Stiffness to Weight: Bending, points 25
13
Strength to Weight: Axial, points 25 to 36
1.5
Strength to Weight: Bending, points 23 to 29
3.3
Thermal Diffusivity, mm2/s 3.8
30
Thermal Shock Resistance, points 15 to 21
3.7

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 59.5 to 67.4
0 to 0.020
Lead (Pb), % 0
34.7 to 36.7
Manganese (Mn), % 8.0 to 10
0
Nickel (Ni), % 5.5 to 7.5
0 to 0.010
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
1.8 to 2.2
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
61.5 to 62.5
Zinc (Zn), % 0
0 to 0.0010