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4047 Aluminum vs. EN 1.7701 Steel

4047 aluminum belongs to the aluminum alloys classification, while EN 1.7701 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 4047 aluminum and the bottom bar is EN 1.7701 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 120
670 to 2010

Thermal Properties

Latent Heat of Fusion, J/g 570
250
Maximum Temperature: Mechanical, °C 160
420
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 580
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
44
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.9
Embodied Energy, MJ/kg 140
26
Embodied Water, L/kg 1050
52

Common Calculations

Stiffness to Weight: Axial, points 16
13
Stiffness to Weight: Bending, points 55
24
Strength to Weight: Axial, points 13
24 to 71
Strength to Weight: Bending, points 21
22 to 45
Thermal Diffusivity, mm2/s 59
12
Thermal Shock Resistance, points 5.6
20 to 59

Alloy Composition

Aluminum (Al), % 85.3 to 89
0
Carbon (C), % 0
0.48 to 0.56
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.8
96.2 to 97.7
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.15
0.7 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 11 to 13
0 to 0.4
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0.1 to 0.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0