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EN 1.7378 Steel vs. 1070A Aluminum

EN 1.7378 steel belongs to the iron alloys classification, while 1070A aluminum belongs to the aluminum alloys. There are 31 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 1.7378 steel and the bottom bar is 1070A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 17
2.3 to 33
Fatigue Strength, MPa 330
17 to 51
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 74
26
Shear Strength, MPa 430
44 to 81
Tensile Strength: Ultimate (UTS), MPa 700
68 to 140
Tensile Strength: Yield (Proof), MPa 490
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Maximum Temperature: Mechanical, °C 460
170
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1430
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 39
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
60
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
200

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.3
8.2
Embodied Energy, MJ/kg 33
150
Embodied Water, L/kg 61
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
3.0 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 630
2.1 to 100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 25
7.0 to 14
Strength to Weight: Bending, points 22
14 to 22
Thermal Diffusivity, mm2/s 10
94
Thermal Shock Resistance, points 20
3.1 to 6.3

Alloy Composition

Aluminum (Al), % 0 to 0.020
99.7 to 100
Boron (B), % 0.0015 to 0.0070
0
Carbon (C), % 0.050 to 0.1
0
Chromium (Cr), % 2.2 to 2.6
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 94.6 to 96.1
0 to 0.25
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0.3 to 0.7
0 to 0.030
Molybdenum (Mo), % 0.9 to 1.1
0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.45
0 to 0.2
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.050 to 0.1
0 to 0.030
Vanadium (V), % 0.2 to 0.3
0
Zinc (Zn), % 0
0 to 0.070