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B443.0 Aluminum vs. SAE-AISI 1049 Steel

B443.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1049 steel belongs to the iron alloys. There are 31 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 B443.0 aluminum and the bottom bar is SAE-AISI 1049 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 43
200 to 220
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 4.9
11 to 17
Fatigue Strength, MPa 55
250 to 400
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 110
420 to 450
Tensile Strength: Ultimate (UTS), MPa 150
680 to 750
Tensile Strength: Yield (Proof), MPa 50
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 470
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 600
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 150
51
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1130
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
75 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 18
370 to 1090
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 15
24 to 27
Strength to Weight: Bending, points 23
22 to 23
Thermal Diffusivity, mm2/s 61
14
Thermal Shock Resistance, points 6.8
22 to 24

Alloy Composition

Aluminum (Al), % 91.9 to 95.5
0
Carbon (C), % 0
0.46 to 0.53
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.8
98.5 to 98.9
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 4.5 to 6.0
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0