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EN 1.8818 Steel vs. 2195 Aluminum

EN 1.8818 steel belongs to the iron alloys classification, while 2195 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.8818 steel and the bottom bar is 2195 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 27
9.3
Fatigue Strength, MPa 200
190
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 280
350
Tensile Strength: Ultimate (UTS), MPa 440
590
Tensile Strength: Yield (Proof), MPa 270
560

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
210
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1420
550
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 48
130
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
34
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
100

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
31
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.6
8.6
Embodied Energy, MJ/kg 21
160
Embodied Water, L/kg 49
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
54
Resilience: Unit (Modulus of Resilience), kJ/m3 200
2290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 16
55
Strength to Weight: Bending, points 16
53
Thermal Diffusivity, mm2/s 13
49
Thermal Shock Resistance, points 13
26

Alloy Composition


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Aluminum (Al), % 0.015 to 0.034
91.9 to 94.9
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 0 to 0.35
0
Copper (Cu), % 0 to 0.6
3.7 to 4.3
Iron (Fe), % 95.9 to 99.985
0 to 0.15
Lithium (Li), % 0
0.8 to 1.2
Magnesium (Mg), % 0
0.25 to 0.8
Manganese (Mn), % 0 to 1.6
0 to 0.25
Molybdenum (Mo), % 0 to 0.13
0
Nickel (Ni), % 0 to 0.35
0
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.017
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.55
0 to 0.12
Silver (Ag), % 0
0.25 to 0.6
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.060
0 to 0.1
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.080 to 0.16
Residuals, % 0
0 to 0.15