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6063A Aluminum vs. SAE-AISI 12L14 Steel

6063A aluminum belongs to the aluminum alloys classification, while SAE-AISI 12L14 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 6063A aluminum and the bottom bar is SAE-AISI 12L14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 6.7 to 18
11 to 25
Fatigue Strength, MPa 53 to 80
190 to 290
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 78 to 150
280 to 370
Tensile Strength: Ultimate (UTS), MPa 130 to 260
440 to 620
Tensile Strength: Yield (Proof), MPa 55 to 200
260 to 460

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 200
51
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 54
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1190
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 21
64 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 22 to 280
180 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 13 to 26
15 to 22
Strength to Weight: Bending, points 21 to 33
16 to 20
Thermal Diffusivity, mm2/s 83
14
Thermal Shock Resistance, points 5.6 to 11
14 to 20

Alloy Composition

Aluminum (Al), % 97.5 to 99
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0.15 to 0.35
97.9 to 98.7
Lead (Pb), % 0
0.15 to 0.35
Magnesium (Mg), % 0.6 to 0.9
0
Manganese (Mn), % 0 to 0.15
0.85 to 1.2
Phosphorus (P), % 0
0.040 to 0.090
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0
0.26 to 0.35
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0