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7003 Aluminum vs. S35135 Stainless Steel

7003 aluminum belongs to the aluminum alloys classification, while S35135 stainless steel belongs to the iron alloys. There are 26 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 7003 aluminum and the bottom bar is S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 11
34
Fatigue Strength, MPa 130 to 150
180
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 210 to 230
390
Tensile Strength: Ultimate (UTS), MPa 350 to 390
590
Tensile Strength: Yield (Proof), MPa 300 to 310
230

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 630
1430
Melting Onset (Solidus), °C 510
1380
Specific Heat Capacity, J/kg-K 870
470
Thermal Expansion, µm/m-K 24
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.9
8.1
Embodied Carbon, kg CO2/kg material 8.1
6.8
Embodied Energy, MJ/kg 150
94
Embodied Water, L/kg 1140
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
160
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 33 to 37
20
Strength to Weight: Bending, points 37 to 40
19
Thermal Shock Resistance, points 15 to 17
13

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.2
20 to 25
Copper (Cu), % 0 to 0.2
0 to 0.75
Iron (Fe), % 0 to 0.35
28.3 to 45
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 4.8
Nickel (Ni), % 0
30 to 38
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.3
0.6 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0.4 to 1.0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0