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7475 Aluminum vs. EN 1.4600 Stainless Steel

7475 aluminum belongs to the aluminum alloys classification, while EN 1.4600 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 7475 aluminum and the bottom bar is EN 1.4600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 10 to 12
23
Fatigue Strength, MPa 190 to 210
290
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 320 to 350
360
Tensile Strength: Ultimate (UTS), MPa 530 to 590
580
Tensile Strength: Yield (Proof), MPa 440 to 520
430

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 180
730
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 480
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140 to 160
27
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 42
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 98 to 120
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1130
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53 to 68
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1390 to 1920
470
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 49 to 55
21
Strength to Weight: Bending, points 48 to 52
20
Thermal Diffusivity, mm2/s 53 to 63
7.3
Thermal Shock Resistance, points 23 to 26
21

Alloy Composition

Aluminum (Al), % 88.6 to 91.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.18 to 0.25
11 to 13
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.12
82 to 87.7
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.060
1.0 to 2.5
Nickel (Ni), % 0
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.025
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.060
0 to 0.35
Zinc (Zn), % 5.1 to 6.2
0
Residuals, % 0 to 0.15
0