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Austenitic Grey Cast Iron vs. AWS BAu-2

Austenitic grey cast iron belongs to the iron alloys classification, while AWS BAu-2 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is austenitic grey cast iron and the bottom bar is AWS BAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
100
Poisson's Ratio 0.29 to 0.3
0.4
Shear Modulus, GPa 69 to 72
36
Tensile Strength: Ultimate (UTS), MPa 150 to 230
150

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
92
Melting Completion (Liquidus), °C 1340 to 1400
890
Melting Onset (Solidus), °C 1290 to 1350
890
Specific Heat Capacity, J/kg-K 470 to 490
180
Thermal Expansion, µm/m-K 13 to 14
15

Otherwise Unclassified Properties

Density, g/cm3 7.7 to 8.1
17

Common Calculations

Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 23 to 25
9.1
Strength to Weight: Axial, points 5.3 to 8.2
2.4
Strength to Weight: Bending, points 7.9 to 11
3.6
Thermal Shock Resistance, points 4.5 to 6.5
7.1