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Automotive Malleable Cast Iron vs. AWS BVAg-31

Automotive malleable cast iron belongs to the iron alloys classification, while AWS BVAg-31 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
90
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 70
33
Tensile Strength: Ultimate (UTS), MPa 350 to 720
180

Thermal Properties

Latent Heat of Fusion, J/g 260
150
Melting Completion (Liquidus), °C 1410
850
Melting Onset (Solidus), °C 1370
820
Specific Heat Capacity, J/kg-K 480
280
Thermal Expansion, µm/m-K 14
18

Otherwise Unclassified Properties

Density, g/cm3 7.6
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.9
Stiffness to Weight: Bending, points 25
15
Strength to Weight: Axial, points 13 to 26
4.9
Strength to Weight: Bending, points 14 to 24
7.0
Thermal Shock Resistance, points 9.9 to 21
7.8

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 2.2 to 2.9
0 to 0.0050
Copper (Cu), % 0
31 to 33
Iron (Fe), % 93.6 to 96.7
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.15 to 1.3
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0.020 to 0.15
0 to 0.0020
Silicon (Si), % 0.9 to 1.9
0
Silver (Ag), % 0
57 to 59
Sulfur (S), % 0.020 to 0.2
0
Zinc (Zn), % 0
0 to 0.0010