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EN 1.7779 Steel vs. C443.0 Aluminum

EN 1.7779 steel belongs to the iron alloys classification, while C443.0 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 1.7779 steel and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
65
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 16
9.0
Fatigue Strength, MPa 430
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 500
130
Tensile Strength: Ultimate (UTS), MPa 810
230
Tensile Strength: Yield (Proof), MPa 660
100

Thermal Properties

Latent Heat of Fusion, J/g 260
470
Maximum Temperature: Mechanical, °C 470
170
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 39
140
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
120

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.8
7.9
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 64
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
17
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
70
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
31
Thermal Diffusivity, mm2/s 11
58
Thermal Shock Resistance, points 23
10

Alloy Composition

Aluminum (Al), % 0 to 0.040
89.6 to 95.5
Carbon (C), % 0.17 to 0.23
0
Chromium (Cr), % 3.0 to 3.3
0
Copper (Cu), % 0 to 0.3
0 to 0.6
Iron (Fe), % 93.8 to 95.4
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.3 to 0.5
0 to 0.35
Molybdenum (Mo), % 0.5 to 0.6
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.15 to 0.35
4.5 to 6.0
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 0.5
Residuals, % 0
0 to 0.25