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EN AC-21100 Aluminum vs. Austenitic Nodular Cast Iron

EN AC-21100 aluminum belongs to the aluminum alloys classification, while austenitic nodular cast iron belongs to the 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. 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 EN AC-21100 aluminum and the bottom bar is austenitic nodular cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
140 to 240
Elastic (Young's, Tensile) Modulus, GPa 71
180 to 190
Elongation at Break, % 6.2 to 7.3
6.8 to 34
Poisson's Ratio 0.33
0.29 to 0.3
Shear Modulus, GPa 27
70 to 72
Tensile Strength: Ultimate (UTS), MPa 340 to 350
430 to 500
Tensile Strength: Yield (Proof), MPa 210 to 240
190 to 240

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
24 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
98 to 160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24 to 25
Strength to Weight: Axial, points 31 to 33
15 to 18
Strength to Weight: Bending, points 36 to 37
16 to 18
Thermal Shock Resistance, points 15
12 to 15

Comparable Variants