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518.0 Aluminum vs. ACI-ASTM CD4MCu Steel

518.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CD4MCu 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 518.0 aluminum and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Elongation at Break, % 5.0
18
Fatigue Strength, MPa 140
340
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 25
79
Tensile Strength: Ultimate (UTS), MPa 310
770
Tensile Strength: Yield (Proof), MPa 190
550

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 560
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 98
17
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 9.4
3.5
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1160
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 32
28
Strength to Weight: Bending, points 38
24
Thermal Diffusivity, mm2/s 40
4.5
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 0 to 0.25
2.8 to 3.3
Iron (Fe), % 0 to 1.8
59.9 to 66.3
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.3
Nickel (Ni), % 0 to 0.15
4.8 to 6.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.25
0