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EN AC-43300 Aluminum vs. ACI-ASTM CG12 Steel

EN AC-43300 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CG12 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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-43300 aluminum and the bottom bar is ACI-ASTM CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91 to 94
160
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 3.4 to 6.7
40
Fatigue Strength, MPa 76 to 77
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 280 to 290
550
Tensile Strength: Yield (Proof), MPa 210 to 230
220

Thermal Properties

Latent Heat of Fusion, J/g 540
300
Maximum Temperature: Mechanical, °C 170
1040
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 590
1370
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.5
7.8
Embodied Carbon, kg CO2/kg material 7.9
3.3
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1080
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 17
180
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
120
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 31 to 32
20
Strength to Weight: Bending, points 37 to 38
19
Thermal Diffusivity, mm2/s 59
4.0
Thermal Shock Resistance, points 13 to 14
12

Alloy Composition

Aluminum (Al), % 88.9 to 90.8
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
20 to 23
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
60.3 to 70
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.1
0 to 1.5
Nickel (Ni), % 0
10 to 13
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 9.0 to 10
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0