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Automotive Malleable Cast Iron vs. Solder Alloy 704

Automotive malleable cast iron belongs to the iron alloys classification, while solder alloy 704 belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is solder alloy 704.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 290
14
Elastic (Young's, Tensile) Modulus, GPa 180
51
Elongation at Break, % 1.0 to 10
30
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 70
19
Tensile Strength: Ultimate (UTS), MPa 350 to 720
55

Thermal Properties

Latent Heat of Fusion, J/g 260
62
Melting Completion (Liquidus), °C 1410
240
Melting Onset (Solidus), °C 1370
220
Specific Heat Capacity, J/kg-K 480
220
Thermal Conductivity, W/m-K 41
50
Thermal Expansion, µm/m-K 14
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
13
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
15

Otherwise Unclassified Properties

Density, g/cm3 7.6
7.5
Embodied Carbon, kg CO2/kg material 1.5
19
Embodied Energy, MJ/kg 20
320

Common Calculations

Stiffness to Weight: Axial, points 13
3.8
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 13 to 26
2.1
Strength to Weight: Bending, points 14 to 24
4.3
Thermal Diffusivity, mm2/s 11
30
Thermal Shock Resistance, points 9.9 to 21
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), % 2.2 to 2.9
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 93.6 to 96.7
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0.15 to 1.3
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0.020 to 0.15
0
Silicon (Si), % 0.9 to 1.9
0
Silver (Ag), % 0
4.8 to 5.2
Sulfur (S), % 0.020 to 0.2
0
Tin (Sn), % 0
94.3 to 95.2
Zinc (Zn), % 0
0 to 0.0010