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C355.0 Aluminum vs. EN 1.7701 Steel

C355.0 aluminum belongs to the aluminum alloys classification, while EN 1.7701 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 C355.0 aluminum and the bottom bar is EN 1.7701 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 86 to 90
200 to 480
Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 290 to 310
670 to 2010

Thermal Properties

Latent Heat of Fusion, J/g 470
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 150
44
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.9
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1120
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 30 to 32
24 to 71
Strength to Weight: Bending, points 36 to 37
22 to 45
Thermal Diffusivity, mm2/s 60
12
Thermal Shock Resistance, points 13 to 14
20 to 59

Alloy Composition

Aluminum (Al), % 91.7 to 94.1
0
Carbon (C), % 0
0.48 to 0.56
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 1.0 to 1.5
0
Iron (Fe), % 0 to 0.2
96.2 to 97.7
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
0.7 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 4.5 to 5.5
0 to 0.4
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.1 to 0.2
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0