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7075 Aluminum vs. EN 1.4584 Stainless Steel

7075 aluminum belongs to the aluminum alloys classification, while EN 1.4584 stainless steel belongs to the iron alloys. There are 29 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 7075 aluminum and the bottom bar is EN 1.4584 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.8 to 12
34
Fatigue Strength, MPa 110 to 190
170
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
79
Tensile Strength: Ultimate (UTS), MPa 240 to 590
500
Tensile Strength: Yield (Proof), MPa 120 to 510
210

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 480
1390
Specific Heat Capacity, J/kg-K 870
460
Thermal Conductivity, W/m-K 130
17
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 98
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 8.3
5.7
Embodied Energy, MJ/kg 150
78
Embodied Water, L/kg 1120
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
140
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 22 to 54
17
Strength to Weight: Bending, points 28 to 52
17
Thermal Diffusivity, mm2/s 50
4.5
Thermal Shock Resistance, points 10 to 25
12

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0.18 to 0.28
19 to 21
Copper (Cu), % 1.2 to 2.0
1.0 to 3.0
Iron (Fe), % 0 to 0.5
41.7 to 52
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
24 to 26
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0