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4343 Aluminum vs. EN 1.7108 Steel

4343 aluminum belongs to the aluminum alloys classification, while EN 1.7108 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 4343 aluminum and the bottom bar is EN 1.7108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 110
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 510
280
Maximum Temperature: Mechanical, °C 160
410
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 580
1390
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 180
46
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 150
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.9
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1100
47

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 12
24 to 75
Strength to Weight: Bending, points 20
22 to 47
Thermal Diffusivity, mm2/s 77
12
Thermal Shock Resistance, points 5.2
20 to 63

Alloy Composition

Aluminum (Al), % 90.3 to 93.2
0
Carbon (C), % 0
0.57 to 0.65
Chromium (Cr), % 0
0.2 to 0.45
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
95.9 to 96.9
Manganese (Mn), % 0 to 0.1
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 6.8 to 8.2
1.6 to 2.0
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0