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EN AC-44000 Aluminum vs. SAE-AISI 1151 Steel

EN AC-44000 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1151 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-44000 aluminum and the bottom bar is SAE-AISI 1151 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 51
210 to 220
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 7.3
11 to 17
Fatigue Strength, MPa 64
260 to 410
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 180
710 to 800
Tensile Strength: Yield (Proof), MPa 86
390 to 660

Thermal Properties

Latent Heat of Fusion, J/g 560
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 590
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 140
51
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
10
Electrical Conductivity: Equal Weight (Specific), % IACS 130
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.5
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1070
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
86 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 51
400 to 1170
Stiffness to Weight: Axial, points 16
13
Stiffness to Weight: Bending, points 55
24
Strength to Weight: Axial, points 20
25 to 28
Strength to Weight: Bending, points 28
22 to 24
Thermal Diffusivity, mm2/s 61
14
Thermal Shock Resistance, points 8.4
22 to 25

Alloy Composition


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Aluminum (Al), % 87.1 to 90
0
Carbon (C), % 0
0.48 to 0.55
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
98.3 to 98.7
Magnesium (Mg), % 0 to 0.45
0
Manganese (Mn), % 0 to 0.1
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 10 to 11.8
0
Sulfur (S), % 0
0.080 to 0.13
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0