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EN 1.7779 Steel vs. 364.0 Aluminum

EN 1.7779 steel belongs to the iron alloys classification, while 364.0 aluminum belongs to the aluminum alloys. There are 30 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 1.7779 steel and the bottom bar is 364.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 16
7.5
Fatigue Strength, MPa 430
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 500
200
Tensile Strength: Ultimate (UTS), MPa 810
300
Tensile Strength: Yield (Proof), MPa 660
160

Thermal Properties

Latent Heat of Fusion, J/g 260
520
Maximum Temperature: Mechanical, °C 470
190
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 39
120
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
30
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
100

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
11
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 2.8
8.0
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 64
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
19
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 29
31
Strength to Weight: Bending, points 25
38
Thermal Diffusivity, mm2/s 11
51
Thermal Shock Resistance, points 23
14

Alloy Composition

Aluminum (Al), % 0 to 0.040
87.2 to 92
Beryllium (Be), % 0
0.020 to 0.040
Carbon (C), % 0.17 to 0.23
0
Chromium (Cr), % 3.0 to 3.3
0.25 to 0.5
Copper (Cu), % 0 to 0.3
0 to 0.2
Iron (Fe), % 93.8 to 95.4
0 to 1.5
Magnesium (Mg), % 0
0.2 to 0.4
Manganese (Mn), % 0.3 to 0.5
0 to 0.1
Molybdenum (Mo), % 0.5 to 0.6
0
Nickel (Ni), % 0 to 0.3
0 to 0.15
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.15 to 0.35
7.5 to 9.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.15
Vanadium (V), % 0.45 to 0.55
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15