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Automotive Grey Cast Iron vs. EN 1.6982 Stainless Steel

Both automotive grey cast iron and EN 1.6982 stainless steel are iron alloys. There are 27 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 EN 1.6982 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 9.6 to 14
17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69 to 70
76
Tensile Strength: Ultimate (UTS), MPa 140 to 290
800
Tensile Strength: Yield (Proof), MPa 94 to 200
570

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
280
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
25
Thermal Expansion, µm/m-K 12 to 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
10
Density, g/cm3 7.5 to 7.6
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
2.4
Embodied Energy, MJ/kg 21 to 24
33
Embodied Water, L/kg 44 to 51
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
120
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 5.2 to 11
28
Strength to Weight: Bending, points 8.0 to 13
25
Thermal Diffusivity, mm2/s 11 to 12
6.6
Thermal Shock Resistance, points 4.2 to 8.6
29