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2017 Aluminum vs. EN 1.8901 Steel

2017 aluminum belongs to the aluminum alloys classification, while EN 1.8901 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 2017 aluminum and the bottom bar is EN 1.8901 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 12 to 18
19
Fatigue Strength, MPa 90 to 130
340
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 130 to 260
390
Tensile Strength: Ultimate (UTS), MPa 190 to 430
630
Tensile Strength: Yield (Proof), MPa 76 to 260
490

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 510
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
44
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.6
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.8
Embodied Energy, MJ/kg 150
24
Embodied Water, L/kg 1140
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 66
110
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 17 to 40
22
Strength to Weight: Bending, points 24 to 42
21
Thermal Diffusivity, mm2/s 56
12
Thermal Shock Resistance, points 7.9 to 18
18

Alloy Composition

Aluminum (Al), % 91.6 to 95.5
0 to 0.015
Carbon (C), % 0
0 to 0.22
Chromium (Cr), % 0 to 0.1
0 to 0.35
Copper (Cu), % 3.5 to 4.5
0 to 0.6
Iron (Fe), % 0 to 0.7
95 to 99.05
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 1.0
1.0 to 1.8
Molybdenum (Mo), % 0
0 to 0.13
Nickel (Ni), % 0
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.2 to 0.8
0 to 0.65
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0 to 0.060
Vanadium (V), % 0
0 to 0.22
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0