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Solder Alloy 134 vs. S21904 Stainless Steel

Solder alloy 134 belongs to the otherwise unclassified metals classification, while S21904 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 134 and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 31
200
Elongation at Break, % 31
17 to 51
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 11
78
Tensile Strength: Ultimate (UTS), MPa 38
700 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 41
290
Melting Completion (Liquidus), °C 230
1400
Melting Onset (Solidus), °C 190
1350
Specific Heat Capacity, J/kg-K 170
480
Thermal Conductivity, W/m-K 45
14
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.6
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 100
15
Density, g/cm3 9.6
7.7
Embodied Carbon, kg CO2/kg material 8.5
3.0
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 820
160

Common Calculations

Stiffness to Weight: Axial, points 1.8
14
Stiffness to Weight: Bending, points 11
25
Strength to Weight: Axial, points 1.1
25 to 36
Strength to Weight: Bending, points 2.6
23 to 29
Thermal Diffusivity, mm2/s 28
3.8
Thermal Shock Resistance, points 3.4
15 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 2.0 to 2.4
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
59.5 to 67.4
Lead (Pb), % 56.5 to 58.5
0
Manganese (Mn), % 0
8.0 to 10
Nickel (Ni), % 0 to 0.010
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 39.5 to 40.5
0
Zinc (Zn), % 0 to 0.0010
0