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238.0 Aluminum vs. EN 1.7231 Steel

238.0 aluminum belongs to the aluminum alloys classification, while EN 1.7231 steel belongs to the iron alloys. There are 29 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 238.0 aluminum and the bottom bar is EN 1.7231 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
190
Elongation at Break, % 1.5
11 to 12
Fatigue Strength, MPa 110
360 to 500
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
73
Tensile Strength: Ultimate (UTS), MPa 210
790 to 930
Tensile Strength: Yield (Proof), MPa 170
570 to 800

Thermal Properties

Latent Heat of Fusion, J/g 430
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 510
1420
Specific Heat Capacity, J/kg-K 840
470
Thermal Conductivity, W/m-K 100
46
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 67
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.5
Density, g/cm3 3.4
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1040
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
87 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 180
870 to 1700
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 42
24
Strength to Weight: Axial, points 17
28 to 33
Strength to Weight: Bending, points 23
24 to 27
Thermal Diffusivity, mm2/s 37
12
Thermal Shock Resistance, points 9.1
23 to 27

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0
Carbon (C), % 0
0.38 to 0.45
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 9.5 to 10.5
0
Iron (Fe), % 1.0 to 1.5
96.4 to 98.1
Magnesium (Mg), % 0 to 0.25
0
Manganese (Mn), % 0
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 3.6 to 4.4
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 1.0 to 1.5
0