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SAE-AISI A9 Steel vs. Solder Alloy 402

SAE-AISI A9 steel belongs to the iron alloys classification, while solder alloy 402 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is solder alloy 402.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
52
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 74
19
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
57

Thermal Properties

Latent Heat of Fusion, J/g 280
64
Melting Completion (Liquidus), °C 1460
310
Melting Onset (Solidus), °C 1410
230
Specific Heat Capacity, J/kg-K 470
230
Thermal Conductivity, W/m-K 35
61
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
15
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
18

Otherwise Unclassified Properties

Density, g/cm3 7.8
7.3
Embodied Carbon, kg CO2/kg material 4.7
15
Embodied Energy, MJ/kg 70
250
Embodied Water, L/kg 82
1180

Common Calculations

Stiffness to Weight: Axial, points 14
3.9
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 28 to 73
2.2
Strength to Weight: Bending, points 24 to 46
4.5
Thermal Diffusivity, mm2/s 9.6
37
Thermal Shock Resistance, points 25 to 66
3.6

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
2.5 to 3.5
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 87 to 90.5
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 1.2
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
95.9 to 97.5
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
0 to 0.0010