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2219 Aluminum vs. ACI-ASTM CB7Cu-1 Steel

2219 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CB7Cu-1 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 2219 aluminum and the bottom bar is ACI-ASTM CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 2.2 to 20
5.7 to 11
Fatigue Strength, MPa 90 to 130
420 to 590
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 180 to 480
960 to 1350
Tensile Strength: Yield (Proof), MPa 88 to 390
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 540
1500
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 110 to 170
17
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28 to 44
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 81 to 130
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
38
Embodied Water, L/kg 1130
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.6 to 60
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 1060
1500 to 3590
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 16 to 43
34 to 48
Strength to Weight: Bending, points 23 to 44
28 to 35
Thermal Diffusivity, mm2/s 42 to 63
4.6
Thermal Shock Resistance, points 8.2 to 22
32 to 45

Alloy Composition

Aluminum (Al), % 91.5 to 93.8
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
15.5 to 17.7
Copper (Cu), % 5.8 to 6.8
2.5 to 3.2
Iron (Fe), % 0 to 0.3
72.3 to 78.4
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0.2 to 0.4
0 to 0.7
Nickel (Ni), % 0
3.6 to 4.6
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.020 to 0.1
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0 to 0.15
0