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518.0 Aluminum vs. SAE-AISI D4 Steel

518.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI D4 steel belongs to the iron alloys. There are 28 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 SAE-AISI D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Elongation at Break, % 5.0
8.4 to 15
Fatigue Strength, MPa 140
310 to 920
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
74
Shear Strength, MPa 200
460 to 1210
Tensile Strength: Ultimate (UTS), MPa 310
760 to 2060
Tensile Strength: Yield (Proof), MPa 190
470 to 1540

Thermal Properties

Latent Heat of Fusion, J/g 390
270
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
31
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 81
5.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.0
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 9.4
3.3
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1160
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
100 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 32
27 to 75
Strength to Weight: Bending, points 38
24 to 47
Thermal Diffusivity, mm2/s 40
8.3
Thermal Shock Resistance, points 14
23 to 63

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
2.1 to 2.4
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 1.8
80.6 to 86.3
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0 to 0.15
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.35
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Vanadium (V), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.25
0