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Automotive Grey Cast Iron vs. AWS BVAg-31

Automotive grey 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 grey 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 69 to 70
33
Tensile Strength: Ultimate (UTS), MPa 140 to 290
180

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
150
Melting Completion (Liquidus), °C 1380 to 1390
850
Melting Onset (Solidus), °C 1340 to 1350
820
Specific Heat Capacity, J/kg-K 490
280
Thermal Expansion, µm/m-K 12 to 14
18

Otherwise Unclassified Properties

Density, g/cm3 7.5 to 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 5.2 to 11
4.9
Strength to Weight: Bending, points 8.0 to 13
7.0
Thermal Shock Resistance, points 4.2 to 8.6
7.8