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6101A Aluminum vs. SAE-AISI 4028 Steel

6101A aluminum belongs to the aluminum alloys classification, while SAE-AISI 4028 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 6101A aluminum and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 11
14 to 23
Fatigue Strength, MPa 80
180 to 330
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 130
310 to 380
Tensile Strength: Ultimate (UTS), MPa 220
490 to 630
Tensile Strength: Yield (Proof), MPa 190
260 to 520

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 630
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 200
49
Thermal Expansion, µm/m-K 23
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1190
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
81 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 280
180 to 720
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 23
17 to 22
Strength to Weight: Bending, points 30
18 to 21
Thermal Diffusivity, mm2/s 84
13
Thermal Shock Resistance, points 10
16 to 20

Alloy Composition

Aluminum (Al), % 97.9 to 99.3
0
Carbon (C), % 0
0.25 to 0.3
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
98.1 to 98.7
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.3 to 0.7
0.15 to 0.35
Sulfur (S), % 0
0.035 to 0.050
Residuals, % 0 to 0.1
0