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EN 1.7117 Steel vs. 328.0 Aluminum

EN 1.7117 steel belongs to the iron alloys classification, while 328.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 1.7117 steel and the bottom bar is 328.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 480
60 to 82
Elastic (Young's, Tensile) Modulus, GPa 190
72
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Tensile Strength: Ultimate (UTS), MPa 660 to 1930
200 to 270

Thermal Properties

Latent Heat of Fusion, J/g 270
510
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 43
120
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
30
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
99

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
10
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 1.5
7.8
Embodied Energy, MJ/kg 21
140
Embodied Water, L/kg 51
1070

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 24 to 69
21 to 28
Strength to Weight: Bending, points 22 to 44
28 to 34
Thermal Diffusivity, mm2/s 12
50
Thermal Shock Resistance, points 20 to 58
9.2 to 12

Alloy Composition

Aluminum (Al), % 0
84.5 to 91.1
Carbon (C), % 0.49 to 0.56
0
Chromium (Cr), % 0.7 to 1.0
0 to 0.35
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 95.2 to 96.4
0 to 1.0
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 0.7 to 1.0
0.2 to 0.6
Nickel (Ni), % 0.5 to 0.7
0 to 0.25
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 1.2 to 1.5
7.5 to 8.5
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5