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6463 Aluminum vs. SAE-AISI 1118 Steel

6463 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1118 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 6463 aluminum and the bottom bar is SAE-AISI 1118 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 42 to 74
140
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 9.0 to 17
13
Fatigue Strength, MPa 45 to 76
260
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 86 to 150
300
Tensile Strength: Ultimate (UTS), MPa 140 to 230
490
Tensile Strength: Yield (Proof), MPa 82 to 200
410

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 660
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 190 to 210
52
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 55
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 170 to 180
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1190
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 25
61
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 300
450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 14 to 24
17
Strength to Weight: Bending, points 22 to 31
18
Thermal Diffusivity, mm2/s 79 to 86
14
Thermal Shock Resistance, points 6.3 to 10
15

Alloy Composition

Aluminum (Al), % 97.9 to 99.4
0
Carbon (C), % 0
0.14 to 0.2
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.15
98 to 98.5
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.050
1.3 to 1.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 0.6
0
Sulfur (S), % 0
0.080 to 0.13
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.15
0