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Solder Alloy 402 vs. S40977 Stainless Steel

Solder alloy 402 belongs to the otherwise unclassified metals classification, while S40977 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 402 and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
190
Elongation at Break, % 20
21
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
76
Tensile Strength: Ultimate (UTS), MPa 57
510

Thermal Properties

Latent Heat of Fusion, J/g 64
270
Melting Completion (Liquidus), °C 310
1440
Melting Onset (Solidus), °C 230
1400
Specific Heat Capacity, J/kg-K 230
480
Thermal Conductivity, W/m-K 61
25
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 18
3.3

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.8
Embodied Carbon, kg CO2/kg material 15
1.9
Embodied Energy, MJ/kg 250
27
Embodied Water, L/kg 1180
97

Common Calculations

Stiffness to Weight: Axial, points 3.9
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.2
18
Strength to Weight: Bending, points 4.5
18
Thermal Diffusivity, mm2/s 37
6.7
Thermal Shock Resistance, points 3.6
18

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 0.030
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 2.5 to 3.5
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
83.9 to 89.2
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.010
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 95.9 to 97.5
0
Zinc (Zn), % 0 to 0.0010
0