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SAE-AISI 1040 Steel vs. B443.0 Aluminum

SAE-AISI 1040 steel belongs to the iron alloys classification, while B443.0 aluminum belongs to the aluminum 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 SAE-AISI 1040 steel and the bottom bar is B443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
43
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 13 to 20
4.9
Fatigue Strength, MPa 220 to 340
55
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 350 to 390
110
Tensile Strength: Ultimate (UTS), MPa 570 to 640
150
Tensile Strength: Yield (Proof), MPa 320 to 530
50

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
38
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
130

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 96
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 760
18
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 20 to 23
15
Strength to Weight: Bending, points 19 to 21
23
Thermal Diffusivity, mm2/s 14
61
Thermal Shock Resistance, points 18 to 20
6.8

Alloy Composition

Aluminum (Al), % 0
91.9 to 95.5
Carbon (C), % 0.37 to 0.44
0
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 98.6 to 99.03
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0.6 to 0.9
0 to 0.35
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
4.5 to 6.0
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15