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C443.0 Aluminum vs. EN 1.6781 Steel

C443.0 aluminum belongs to the aluminum alloys classification, while EN 1.6781 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 C443.0 aluminum and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
250
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 9.0
17
Fatigue Strength, MPa 120
450
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 230
830
Tensile Strength: Yield (Proof), MPa 100
680

Thermal Properties

Latent Heat of Fusion, J/g 470
260
Maximum Temperature: Mechanical, °C 170
450
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 600
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
44
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
5.0
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 7.9
1.9
Embodied Energy, MJ/kg 150
25
Embodied Water, L/kg 1120
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
130
Resilience: Unit (Modulus of Resilience), kJ/m3 70
1220
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 31
25
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 10
24

Alloy Composition

Aluminum (Al), % 89.6 to 95.5
0
Carbon (C), % 0
0.15 to 0.19
Chromium (Cr), % 0
1.3 to 1.8
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 0 to 2.0
92.6 to 94.6
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.35
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 0 to 0.5
3.0 to 3.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 4.5 to 6.0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.25
0