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7010 Aluminum vs. ACI-ASTM CT15C Steel

7010 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CT15C 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 7010 aluminum and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.9 to 6.8
23
Fatigue Strength, MPa 160 to 190
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 520 to 590
500
Tensile Strength: Yield (Proof), MPa 410 to 540
190

Thermal Properties

Latent Heat of Fusion, J/g 380
310
Maximum Temperature: Mechanical, °C 200
1080
Melting Completion (Liquidus), °C 630
1410
Melting Onset (Solidus), °C 480
1360
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 150
12
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
6.1
Embodied Energy, MJ/kg 150
88
Embodied Water, L/kg 1120
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 33
90
Resilience: Unit (Modulus of Resilience), kJ/m3 1230 to 2130
93
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 47 to 54
17
Strength to Weight: Bending, points 47 to 52
17
Thermal Diffusivity, mm2/s 58
3.2
Thermal Shock Resistance, points 22 to 26
12

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0 to 0.050
19 to 21
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 0 to 0.15
40.3 to 49.2
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
0.15 to 1.5
Nickel (Ni), % 0 to 0.050
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.12
0.15 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0 to 0.15
0