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SAE-AISI A7 Steel vs. Solder Alloy 704

SAE-AISI A7 steel belongs to the iron alloys classification, while solder alloy 704 belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is solder alloy 704.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
51
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 72
19
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
55

Thermal Properties

Latent Heat of Fusion, J/g 260
62
Melting Completion (Liquidus), °C 1470
240
Melting Onset (Solidus), °C 1430
220
Specific Heat Capacity, J/kg-K 470
220
Thermal Conductivity, W/m-K 37
50
Thermal Expansion, µm/m-K 12
22

Otherwise Unclassified Properties

Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 13
19
Embodied Energy, MJ/kg 200
320

Common Calculations

Stiffness to Weight: Axial, points 13
3.8
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 29 to 77
2.1
Strength to Weight: Bending, points 25 to 48
4.3
Thermal Diffusivity, mm2/s 10
30
Thermal Shock Resistance, points 27 to 72
3.5

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), % 2.0 to 2.9
0
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 81.4 to 87.7
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
4.8 to 5.2
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
94.3 to 95.2
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Zinc (Zn), % 0
0 to 0.0010