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Automotive Grey Cast Iron vs. Grade FDSiCr Steel

Both automotive grey cast iron and grade FDSiCr steel are iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is automotive grey cast iron and the bottom bar is grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 280
580
Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 69 to 70
80
Tensile Strength: Ultimate (UTS), MPa 140 to 290
1930

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
270
Melting Completion (Liquidus), °C 1380 to 1390
1440
Melting Onset (Solidus), °C 1340 to 1350
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 41 to 43
48
Thermal Expansion, µm/m-K 12 to 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
2.2
Density, g/cm3 7.5 to 7.6
7.7
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
1.5
Embodied Energy, MJ/kg 21 to 24
20
Embodied Water, L/kg 44 to 51
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 5.2 to 11
69
Strength to Weight: Bending, points 8.0 to 13
44
Thermal Diffusivity, mm2/s 11 to 12
13
Thermal Shock Resistance, points 4.2 to 8.6
58