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S30601 Stainless Steel vs. 7003 Aluminum

S30601 stainless steel belongs to the iron alloys classification, while 7003 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 S30601 stainless steel and the bottom bar is 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 37
11
Fatigue Strength, MPa 250
130 to 150
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 75
26
Shear Strength, MPa 450
210 to 230
Tensile Strength: Ultimate (UTS), MPa 660
350 to 390
Tensile Strength: Yield (Proof), MPa 300
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 370
380
Maximum Temperature: Mechanical, °C 950
200
Melting Completion (Liquidus), °C 1360
630
Melting Onset (Solidus), °C 1310
510
Specific Heat Capacity, J/kg-K 500
870
Thermal Expansion, µm/m-K 15
24

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.5
Density, g/cm3 7.6
2.9
Embodied Carbon, kg CO2/kg material 3.9
8.1
Embodied Energy, MJ/kg 55
150
Embodied Water, L/kg 150
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
37 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 230
630 to 710
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 24
33 to 37
Strength to Weight: Bending, points 22
37 to 40
Thermal Shock Resistance, points 16
15 to 17

Alloy Composition

Aluminum (Al), % 0
90.6 to 94.5
Carbon (C), % 0 to 0.015
0
Chromium (Cr), % 17 to 18
0 to 0.2
Copper (Cu), % 0 to 0.35
0 to 0.2
Iron (Fe), % 56.9 to 60.5
0 to 0.35
Magnesium (Mg), % 0
0.5 to 1.0
Manganese (Mn), % 0.5 to 0.8
0 to 0.3
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 17 to 18
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 5.0 to 5.6
0 to 0.3
Sulfur (S), % 0 to 0.013
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
5.0 to 6.5
Zirconium (Zr), % 0
0.050 to 0.25
Residuals, % 0
0 to 0.15