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EN 1.6957 Steel vs. 2011 Aluminum

EN 1.6957 steel belongs to the iron alloys classification, while 2011 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.6957 steel and the bottom bar is 2011 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 18
8.5 to 18
Fatigue Strength, MPa 530
74 to 120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 570
190 to 250
Tensile Strength: Ultimate (UTS), MPa 930
310 to 420
Tensile Strength: Yield (Proof), MPa 780
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 450
190
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
540
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 47
140 to 170
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
35 to 45
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
100 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
11
Density, g/cm3 7.9
3.1
Embodied Carbon, kg CO2/kg material 2.1
7.9
Embodied Energy, MJ/kg 29
150
Embodied Water, L/kg 60
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 1630
140 to 680
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
44
Strength to Weight: Axial, points 33
27 to 37
Strength to Weight: Bending, points 27
32 to 40
Thermal Diffusivity, mm2/s 13
51 to 64
Thermal Shock Resistance, points 27
14 to 19

Alloy Composition

Aluminum (Al), % 0
91.3 to 94.6
Bismuth (Bi), % 0
0.2 to 0.6
Carbon (C), % 0.22 to 0.32
0
Chromium (Cr), % 1.2 to 1.8
0
Copper (Cu), % 0
5.0 to 6.0
Iron (Fe), % 92.7 to 94.7
0 to 0.7
Lead (Pb), % 0
0.2 to 0.6
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 0.25 to 0.45
0
Nickel (Ni), % 3.4 to 4.0
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.15
0 to 0.4
Sulfur (S), % 0 to 0.0070
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15