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EN AC-51500 Aluminum vs. ACI-ASTM CH20 Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CH20 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-51500 aluminum and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
38
Fatigue Strength, MPa 120
290
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 280
610
Tensile Strength: Yield (Proof), MPa 160
350

Thermal Properties

Latent Heat of Fusion, J/g 430
310
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 630
1410
Melting Onset (Solidus), °C 590
1430
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
14
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.0
3.7
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
200
Resilience: Unit (Modulus of Resilience), kJ/m3 190
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 36
21
Thermal Diffusivity, mm2/s 49
3.7
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
22 to 26
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
54.7 to 66
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
12 to 15
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.6
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0