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SAE-AISI 1040 Steel vs. EN AC-43500 Aluminum

SAE-AISI 1040 steel belongs to the iron alloys classification, while EN AC-43500 aluminum belongs to the aluminum 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 SAE-AISI 1040 steel and the bottom bar is EN AC-43500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
68 to 91
Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 13 to 20
4.5 to 13
Fatigue Strength, MPa 220 to 340
62 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 570 to 640
220 to 300
Tensile Strength: Yield (Proof), MPa 320 to 530
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 250
550
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 51
140
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
2.6
Embodied Carbon, kg CO2/kg material 1.4
7.8
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 96
12 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 760
130 to 200
Stiffness to Weight: Axial, points 13
16
Stiffness to Weight: Bending, points 24
54
Strength to Weight: Axial, points 20 to 23
24 to 33
Strength to Weight: Bending, points 19 to 21
32 to 39
Thermal Diffusivity, mm2/s 14
60
Thermal Shock Resistance, points 18 to 20
10 to 14

Alloy Composition

Aluminum (Al), % 0
86.4 to 90.5
Carbon (C), % 0.37 to 0.44
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 98.6 to 99.03
0 to 0.25
Magnesium (Mg), % 0
0.1 to 0.6
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.8
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
9.0 to 11.5
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.15