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Automotive Grey Cast Iron vs. C72900 Copper-nickel

Automotive grey cast iron belongs to the iron alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is automotive grey cast iron and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
120
Elongation at Break, % 9.6 to 14
6.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 69 to 70
45
Tensile Strength: Ultimate (UTS), MPa 140 to 290
870 to 1080
Tensile Strength: Yield (Proof), MPa 94 to 200
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
210
Melting Completion (Liquidus), °C 1380 to 1390
1120
Melting Onset (Solidus), °C 1340 to 1350
950
Specific Heat Capacity, J/kg-K 490
380
Thermal Conductivity, W/m-K 41 to 43
29
Thermal Expansion, µm/m-K 12 to 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
39
Density, g/cm3 7.5 to 7.6
8.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
4.6
Embodied Energy, MJ/kg 21 to 24
72
Embodied Water, L/kg 44 to 51
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
2030 to 3490
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 5.2 to 11
27 to 34
Strength to Weight: Bending, points 8.0 to 13
23 to 27
Thermal Diffusivity, mm2/s 11 to 12
8.6
Thermal Shock Resistance, points 4.2 to 8.6
31 to 38