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2618 Aluminum vs. Grade FDSiCrV Steel

2618 aluminum belongs to the aluminum alloys classification, while grade FDSiCrV steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 2618 aluminum and the bottom bar is grade FDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
630
Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 420
2100

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 210
420
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 160
47
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.3
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.3
1.9
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1150
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 40
75
Strength to Weight: Bending, points 42
47
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 19
63

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0
Carbon (C), % 0
0.5 to 0.7
Chromium (Cr), % 0
0.5 to 1.0
Copper (Cu), % 1.9 to 2.7
0 to 0.12
Iron (Fe), % 0.9 to 1.3
96 to 97.8
Magnesium (Mg), % 1.3 to 1.8
0
Manganese (Mn), % 0
0.4 to 0.9
Nickel (Ni), % 0.9 to 1.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.1 to 0.25
1.2 to 1.7
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0.040 to 0.1
0
Vanadium (V), % 0
0.1 to 0.25
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0