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7003 Aluminum vs. EN 1.4005 Stainless Steel

7003 aluminum belongs to the aluminum alloys classification, while EN 1.4005 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 7003 aluminum and the bottom bar is EN 1.4005 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11
13 to 21
Fatigue Strength, MPa 130 to 150
240 to 290
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 210 to 230
390 to 450
Tensile Strength: Ultimate (UTS), MPa 350 to 390
630 to 750
Tensile Strength: Yield (Proof), MPa 300 to 310
370 to 500

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 200
760
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 510
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 150
30
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.1
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1140
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
90 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
350 to 650
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 33 to 37
23 to 27
Strength to Weight: Bending, points 37 to 40
21 to 24
Thermal Diffusivity, mm2/s 59
8.1
Thermal Shock Resistance, points 15 to 17
23 to 27

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
0.060 to 0.15
Chromium (Cr), % 0 to 0.2
12 to 14
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
82.4 to 87.8
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0