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ACI-ASTM CB7Cu-2 Steel vs. EN AC-42200 Aluminum

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while EN AC-42200 aluminum belongs to the aluminum alloys. There are 29 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 ACI-ASTM CB7Cu-2 steel and the bottom bar is EN AC-42200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
89 to 100
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 5.7 to 11
3.0 to 6.7
Fatigue Strength, MPa 420 to 590
86 to 90
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
320
Tensile Strength: Yield (Proof), MPa 760 to 1180
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 280
500
Melting Completion (Liquidus), °C 1430
610
Melting Onset (Solidus), °C 1380
600
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 17
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 2.6
8.0
Embodied Energy, MJ/kg 38
150
Embodied Water, L/kg 130
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
9.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
410 to 490
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 34 to 48
34 to 35
Strength to Weight: Bending, points 28 to 35
40 to 41
Thermal Diffusivity, mm2/s 4.6
66
Thermal Shock Resistance, points 32 to 45
15

Alloy Composition

Aluminum (Al), % 0
91 to 93.1
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 14 to 15.5
0
Copper (Cu), % 2.5 to 3.2
0 to 0.050
Iron (Fe), % 73.6 to 79
0 to 0.19
Magnesium (Mg), % 0
0.45 to 0.7
Manganese (Mn), % 0 to 0.7
0 to 0.1
Nickel (Ni), % 4.5 to 5.5
0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1