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EN 1.7225 Steel vs. 242.0 Aluminum

EN 1.7225 steel belongs to the iron alloys classification, while 242.0 aluminum belongs to the aluminum alloys. There are 25 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 EN 1.7225 steel and the bottom bar is 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
70 to 110
Elastic (Young's, Tensile) Modulus, GPa 190
73
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 540 to 1850
180 to 290

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 420
210
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
530
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 46
130 to 170
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
33 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
96 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
12
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 1.5
8.3
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 51
1130

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 19 to 65
16 to 26
Strength to Weight: Bending, points 19 to 43
23 to 32
Thermal Diffusivity, mm2/s 12
50 to 62
Thermal Shock Resistance, points 16 to 54
8.0 to 13

Alloy Composition

Aluminum (Al), % 0
88.4 to 93.6
Carbon (C), % 0.38 to 0.45
0
Chromium (Cr), % 0.9 to 1.2
0 to 0.25
Copper (Cu), % 0 to 0.25
3.5 to 4.5
Iron (Fe), % 96.6 to 98
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0.6 to 0.9
0 to 0.35
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0
1.7 to 2.3
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15

Comparable Variants