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EN AC-71100 Aluminum vs. ASTM A217 Cast Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while ASTM A217 cast steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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-71100 aluminum and the bottom bar is ASTM A217 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
21 to 27
Fatigue Strength, MPa 150
200 to 320
Poisson's Ratio 0.32
0.28 to 0.29
Shear Modulus, GPa 27
73 to 75
Tensile Strength: Ultimate (UTS), MPa 260
540 to 710
Tensile Strength: Yield (Proof), MPa 230
270 to 460

Thermal Properties

Latent Heat of Fusion, J/g 490
250 to 270
Maximum Temperature: Mechanical, °C 170
410 to 600
Melting Completion (Liquidus), °C 580
1450 to 1460
Melting Onset (Solidus), °C 520
1410 to 1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.3 to 9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 97
8.4 to 11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4 to 7.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.5 to 2.1
Embodied Energy, MJ/kg 140
20 to 28
Embodied Water, L/kg 1010
47 to 87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 360
190 to 570
Stiffness to Weight: Axial, points 14
13 to 14
Stiffness to Weight: Bending, points 47
24 to 25
Strength to Weight: Axial, points 25
19 to 25
Strength to Weight: Bending, points 31
19 to 23
Thermal Shock Resistance, points 12
16 to 20