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EN 1.8870 Steel vs. 240.0 Aluminum

EN 1.8870 steel belongs to the iron alloys classification, while 240.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 1.8870 steel and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 21
1.0
Fatigue Strength, MPa 310
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 610
240
Tensile Strength: Yield (Proof), MPa 450
200

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
520
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 39
96
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
23
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
65

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
12
Density, g/cm3 7.9
3.2
Embodied Carbon, kg CO2/kg material 1.7
8.7
Embodied Energy, MJ/kg 22
150
Embodied Water, L/kg 50
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 530
280
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
43
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 10
35
Thermal Shock Resistance, points 18
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.18
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
7.0 to 9.0
Iron (Fe), % 95.1 to 100
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 0 to 1.7
0.3 to 0.7
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0.3 to 0.7
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.030
0 to 0.2
Vanadium (V), % 0 to 0.080
0
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.15