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Automotive Grey Cast Iron vs. N08031 Stainless Steel

Both automotive grey cast iron and N08031 stainless steel are iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is automotive grey cast iron and the bottom bar is N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
210
Elongation at Break, % 9.6 to 14
45
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69 to 70
81
Tensile Strength: Ultimate (UTS), MPa 140 to 290
730
Tensile Strength: Yield (Proof), MPa 94 to 200
310

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
310
Melting Completion (Liquidus), °C 1380 to 1390
1440
Melting Onset (Solidus), °C 1340 to 1350
1390
Specific Heat Capacity, J/kg-K 490
460
Thermal Conductivity, W/m-K 41 to 43
12
Thermal Expansion, µm/m-K 12 to 14
18

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
39
Density, g/cm3 7.5 to 7.6
8.1
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
7.1
Embodied Energy, MJ/kg 21 to 24
96
Embodied Water, L/kg 44 to 51
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
270
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 5.2 to 11
25
Strength to Weight: Bending, points 8.0 to 13
22
Thermal Diffusivity, mm2/s 11 to 12
3.1
Thermal Shock Resistance, points 4.2 to 8.6
14