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EN 1.0644 Steel vs. 1070 Aluminum

EN 1.0644 steel belongs to the iron alloys classification, while 1070 aluminum belongs to the aluminum 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 EN 1.0644 steel and the bottom bar is 1070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 17
4.5 to 39
Fatigue Strength, MPa 380
22 to 49
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 420
48 to 79
Tensile Strength: Ultimate (UTS), MPa 690
73 to 140
Tensile Strength: Yield (Proof), MPa 570
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 47
230
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
61
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
200

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.8
8.3
Embodied Energy, MJ/kg 24
160
Embodied Water, L/kg 50
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
4.8 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 870
2.1 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 24
7.5 to 14
Strength to Weight: Bending, points 22
14 to 22
Thermal Diffusivity, mm2/s 13
94
Thermal Shock Resistance, points 22
3.3 to 6.1

Alloy Composition

Aluminum (Al), % 0.010 to 0.050
99.7 to 100
Carbon (C), % 0.16 to 0.22
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
0 to 0.040
Iron (Fe), % 96.1 to 98.4
0 to 0.25
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 1.3 to 1.7
0 to 0.030
Molybdenum (Mo), % 0 to 0.080
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.1 to 0.5
0 to 0.2
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0 to 0.050
0 to 0.030
Vanadium (V), % 0.080 to 0.15
0 to 0.050
Zinc (Zn), % 0
0 to 0.040
Residuals, % 0
0 to 0.030