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Solder Alloy 704 vs. Austempered Cast Iron

Solder alloy 704 belongs to the otherwise unclassified metals classification, while austempered cast iron belongs to the iron alloys. There are 21 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 solder alloy 704 and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 14
270 to 490
Elastic (Young's, Tensile) Modulus, GPa 51
180
Elongation at Break, % 30
1.1 to 13
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
62 to 69
Tensile Strength: Ultimate (UTS), MPa 55
860 to 1800

Thermal Properties

Latent Heat of Fusion, J/g 62
280
Melting Completion (Liquidus), °C 240
1380
Melting Onset (Solidus), °C 220
1340
Specific Heat Capacity, J/kg-K 220
490
Thermal Conductivity, W/m-K 50
42
Thermal Expansion, µm/m-K 22
13

Otherwise Unclassified Properties

Density, g/cm3 7.5
7.5
Embodied Carbon, kg CO2/kg material 19
1.8
Embodied Energy, MJ/kg 320
25

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.1
32 to 66
Strength to Weight: Bending, points 4.3
27 to 44
Thermal Diffusivity, mm2/s 30
11
Thermal Shock Resistance, points 3.5
25 to 53

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.050
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0 to 0.020
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.050
0 to 0.8
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
89.6 to 94
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.010
0 to 2.0
Phosphorus (P), % 0
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0
2.3 to 2.7
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 94.3 to 95.2
0 to 0.020
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.0010
0