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1230A Aluminum vs. ACI-ASTM CF3 Steel

1230A aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF3 steel belongs to the iron alloys. There are 29 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 1230A aluminum and the bottom bar is ACI-ASTM CF3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 4.5 to 34
60
Fatigue Strength, MPa 35 to 74
270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 89 to 170
510
Tensile Strength: Yield (Proof), MPa 29 to 150
250

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 170
960
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 640
1450
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
16
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 200
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
16
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.2
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.4 to 23
250
Resilience: Unit (Modulus of Resilience), kJ/m3 5.9 to 150
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 9.1 to 17
18
Strength to Weight: Bending, points 16 to 25
18
Thermal Diffusivity, mm2/s 93
4.3
Thermal Shock Resistance, points 4.0 to 7.6
11

Alloy Composition

Aluminum (Al), % 99.3 to 100
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17 to 21
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.7
62.9 to 75
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
8.0 to 12
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.050
0