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EN 1.3956 Stainless Steel vs. 8090 Aluminum

EN 1.3956 stainless steel belongs to the iron alloys classification, while 8090 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 1.3956 stainless steel and the bottom bar is 8090 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67
Elongation at Break, % 27
3.5 to 13
Fatigue Strength, MPa 240
91 to 140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
25
Tensile Strength: Ultimate (UTS), MPa 650
340 to 490
Tensile Strength: Yield (Proof), MPa 330
210 to 420

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1080
190
Melting Completion (Liquidus), °C 1420
660
Melting Onset (Solidus), °C 1380
600
Specific Heat Capacity, J/kg-K 480
960
Thermal Expansion, µm/m-K 13
24

Otherwise Unclassified Properties

Base Metal Price, % relative 22
18
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.6
Embodied Energy, MJ/kg 68
170
Embodied Water, L/kg 180
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
16 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 270
340 to 1330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 23
34 to 49
Strength to Weight: Bending, points 21
39 to 50
Thermal Shock Resistance, points 18
15 to 22

Alloy Composition

Aluminum (Al), % 0
93 to 98.4
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0 to 0.1
Copper (Cu), % 0
1.0 to 1.6
Iron (Fe), % 51.9 to 62.1
0 to 0.3
Lithium (Li), % 0
2.2 to 2.7
Magnesium (Mg), % 0
0.6 to 1.3
Manganese (Mn), % 4.0 to 6.0
0 to 0.1
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.16
Residuals, % 0
0 to 0.15