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513.0 Aluminum vs. SAE-AISI 6118 Steel

513.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 6118 steel belongs to the iron alloys. 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 513.0 aluminum and the bottom bar is SAE-AISI 6118 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
140
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 5.7
23
Fatigue Strength, MPa 97
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 170
300
Tensile Strength: Ultimate (UTS), MPa 200
470
Tensile Strength: Yield (Proof), MPa 120
290

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
45
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1170
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.8
93
Resilience: Unit (Modulus of Resilience), kJ/m3 100
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 28
17
Thermal Diffusivity, mm2/s 54
12
Thermal Shock Resistance, points 8.8
14

Alloy Composition

Aluminum (Al), % 91.9 to 95.1
0
Carbon (C), % 0
0.16 to 0.21
Chromium (Cr), % 0
0.5 to 0.7
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
97.8 to 98.6
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0 to 0.3
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.1 to 0.15
Zinc (Zn), % 1.4 to 2.2
0
Residuals, % 0 to 0.15
0