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EN AC-42200 Aluminum vs. SAE-AISI 1055 Steel

EN AC-42200 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1055 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-42200 aluminum and the bottom bar is SAE-AISI 1055 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 89 to 100
220
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.0 to 6.7
11 to 14
Fatigue Strength, MPa 86 to 90
260 to 390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 320
730 to 750
Tensile Strength: Yield (Proof), MPa 240 to 260
400 to 630

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 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 140
12

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 9.0 to 20
80 to 85
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 490
440 to 1070
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 34 to 35
26
Strength to Weight: Bending, points 40 to 41
23
Thermal Diffusivity, mm2/s 66
14
Thermal Shock Resistance, points 15
23 to 24

Alloy Composition

Aluminum (Al), % 91 to 93.1
0
Carbon (C), % 0
0.5 to 0.6
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
98.4 to 98.9
Magnesium (Mg), % 0.45 to 0.7
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