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1050 Aluminum vs. ACI-ASTM CA15M Steel

1050 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CA15M steel belongs to the iron alloys. There are 29 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 1050 aluminum and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 4.6 to 37
20
Fatigue Strength, MPa 31 to 57
330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 76 to 140
690
Tensile Strength: Yield (Proof), MPa 25 to 120
510

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 170
760
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 650
1410
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
27
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 200
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.1
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 1200
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 22
130
Resilience: Unit (Modulus of Resilience), kJ/m3 4.6 to 110
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.8 to 14
25
Strength to Weight: Bending, points 15 to 22
22
Thermal Diffusivity, mm2/s 94
7.2
Thermal Shock Resistance, points 3.4 to 6.2
25

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
11.5 to 14
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
82.1 to 88.4
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 0.65
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0