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Austenitic Nodular Cast Iron vs. EN AC-21000 Aluminum

Austenitic nodular cast iron belongs to the iron alloys classification, while EN AC-21000 aluminum belongs to the aluminum 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. 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 nodular cast iron and the bottom bar is EN AC-21000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 240
100
Elastic (Young's, Tensile) Modulus, GPa 180 to 190
71
Elongation at Break, % 6.8 to 34
6.7
Poisson's Ratio 0.29 to 0.3
0.33
Shear Modulus, GPa 70 to 72
27
Tensile Strength: Ultimate (UTS), MPa 430 to 500
340
Tensile Strength: Yield (Proof), MPa 190 to 240
240

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
390
Melting Completion (Liquidus), °C 1340 to 1400
670
Melting Onset (Solidus), °C 1300 to 1360
550
Specific Heat Capacity, J/kg-K 470 to 490
880
Thermal Expansion, µm/m-K 13 to 14
23

Otherwise Unclassified Properties

Base Metal Price, % relative 16 to 25
11
Density, g/cm3 7.7 to 8.0
3.0
Embodied Carbon, kg CO2/kg material 3.5 to 4.9
8.0
Embodied Energy, MJ/kg 48 to 68
150
Embodied Water, L/kg 91 to 120
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 140
21
Resilience: Unit (Modulus of Resilience), kJ/m3 98 to 160
390
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24 to 25
46
Strength to Weight: Axial, points 15 to 18
32
Strength to Weight: Bending, points 16 to 18
36
Thermal Shock Resistance, points 12 to 15
15