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EN AC-42100 Aluminum vs. SAE-AISI 1040 Steel

EN AC-42100 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1040 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 EN AC-42100 aluminum and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4 to 9.0
13 to 20
Fatigue Strength, MPa 76 to 82
220 to 340
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 280 to 290
570 to 640
Tensile Strength: Yield (Proof), MPa 210 to 230
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 500
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 600
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 150
51
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1110
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
270 to 760
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 30 to 31
20 to 23
Strength to Weight: Bending, points 37 to 38
19 to 21
Thermal Diffusivity, mm2/s 66
14
Thermal Shock Resistance, points 13
18 to 20

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
0
Carbon (C), % 0
0.37 to 0.44
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
98.6 to 99.03
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.1
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 6.5 to 7.5
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0