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8090 Aluminum vs. EN 1.4855 Stainless Steel

8090 aluminum belongs to the aluminum alloys classification, while EN 1.4855 stainless steel belongs to the iron alloys. There are 27 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 8090 aluminum and the bottom bar is EN 1.4855 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Elongation at Break, % 3.5 to 13
4.6
Fatigue Strength, MPa 91 to 140
120
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
77
Tensile Strength: Ultimate (UTS), MPa 340 to 490
500
Tensile Strength: Yield (Proof), MPa 210 to 420
250

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 190
1050
Melting Completion (Liquidus), °C 660
1400
Melting Onset (Solidus), °C 600
1350
Specific Heat Capacity, J/kg-K 960
480
Thermal Conductivity, W/m-K 95 to 160
14
Thermal Expansion, µm/m-K 24
16

Otherwise Unclassified Properties

Base Metal Price, % relative 18
34
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
5.9
Embodied Energy, MJ/kg 170
85
Embodied Water, L/kg 1160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
19
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 34 to 49
18
Strength to Weight: Bending, points 39 to 50
18
Thermal Diffusivity, mm2/s 36 to 60
3.7
Thermal Shock Resistance, points 15 to 22
11

Alloy Composition


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Aluminum (Al), % 93 to 98.4
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0 to 0.1
23 to 25
Copper (Cu), % 1.0 to 1.6
0
Iron (Fe), % 0 to 0.3
42.6 to 51.9
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
23 to 25
Niobium (Nb), % 0
0.8 to 1.8
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0 to 0.15
0