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7075 Aluminum vs. EN 1.4606 Stainless Steel

7075 aluminum belongs to the aluminum alloys classification, while EN 1.4606 stainless steel belongs to the iron 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 7075 aluminum and the bottom bar is EN 1.4606 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.8 to 12
23 to 39
Fatigue Strength, MPa 110 to 190
240 to 420
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
75
Shear Strength, MPa 150 to 340
410 to 640
Tensile Strength: Ultimate (UTS), MPa 240 to 590
600 to 1020
Tensile Strength: Yield (Proof), MPa 120 to 510
280 to 630

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 200
910
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 480
1380
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130
14
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 98
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.3
6.0
Embodied Energy, MJ/kg 150
87
Embodied Water, L/kg 1120
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
200 to 1010
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 22 to 54
21 to 36
Strength to Weight: Bending, points 28 to 52
20 to 28
Thermal Diffusivity, mm2/s 50
3.7
Thermal Shock Resistance, points 10 to 25
21 to 35

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.18 to 0.28
13 to 16
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 0 to 0.5
49.2 to 59
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
1.0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
1.9 to 2.3
Vanadium (V), % 0
0.1 to 0.5
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0