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EN 1.7779 Steel vs. 383.0 Aluminum

EN 1.7779 steel belongs to the iron alloys classification, while 383.0 aluminum belongs to the aluminum alloys. There are 31 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 383.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
75
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 16
3.5
Fatigue Strength, MPa 430
150
Impact Strength: V-Notched Charpy, J 38
4.0
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
28
Tensile Strength: Ultimate (UTS), MPa 810
280
Tensile Strength: Yield (Proof), MPa 660
150

Thermal Properties

Latent Heat of Fusion, J/g 260
540
Maximum Temperature: Mechanical, °C 470
170
Melting Completion (Liquidus), °C 1460
580
Melting Onset (Solidus), °C 1420
540
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 39
96
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
23
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
74

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 2.8
7.5
Embodied Energy, MJ/kg 41
140
Embodied Water, L/kg 64
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
150
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 29
28
Strength to Weight: Bending, points 25
34
Thermal Diffusivity, mm2/s 11
39
Thermal Shock Resistance, points 23
13

Alloy Composition

Aluminum (Al), % 0 to 0.040
79.7 to 88.5
Carbon (C), % 0.17 to 0.23
0
Chromium (Cr), % 3.0 to 3.3
0
Copper (Cu), % 0 to 0.3
2.0 to 3.0
Iron (Fe), % 93.8 to 95.4
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.3 to 0.5
0 to 0.5
Molybdenum (Mo), % 0.5 to 0.6
0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.15 to 0.35
9.5 to 11.5
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 3.0
Residuals, % 0
0 to 0.5