MakeItFrom.com
Menu (ESC)

7075 Aluminum vs. ACI-ASTM CC50 Steel

7075 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CC50 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, 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 7075 aluminum and the bottom bar is ACI-ASTM CC50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 240 to 590
430

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 480
1370
Specific Heat Capacity, J/kg-K 870
490
Thermal Conductivity, W/m-K 130
17
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 98
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
14
Density, g/cm3 3.0
7.6
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1120
170

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
26
Strength to Weight: Axial, points 22 to 54
16
Strength to Weight: Bending, points 28 to 52
17
Thermal Diffusivity, mm2/s 50
4.5
Thermal Shock Resistance, points 10 to 25
14

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0
Carbon (C), % 0
0 to 0.5
Chromium (Cr), % 0.18 to 0.28
26 to 30
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 0 to 0.5
62.9 to 74
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0 to 1.0
Nickel (Ni), % 0
0 to 4.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0