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AISI 310S Stainless Steel vs. 7003 Aluminum

AISI 310S stainless steel belongs to the iron alloys classification, while 7003 aluminum belongs to the aluminum 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 AISI 310S stainless steel and the bottom bar is 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34 to 44
11
Fatigue Strength, MPa 250 to 280
130 to 150
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 79
26
Shear Strength, MPa 420 to 470
210 to 230
Tensile Strength: Ultimate (UTS), MPa 600 to 710
350 to 390
Tensile Strength: Yield (Proof), MPa 270 to 350
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 310
380
Maximum Temperature: Mechanical, °C 1100
200
Melting Completion (Liquidus), °C 1450
630
Melting Onset (Solidus), °C 1400
510
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
36
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 4.3
8.1
Embodied Energy, MJ/kg 61
150
Embodied Water, L/kg 190
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
37 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 310
630 to 710
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 21 to 25
33 to 37
Strength to Weight: Bending, points 20 to 22
37 to 40
Thermal Diffusivity, mm2/s 4.1
59
Thermal Shock Resistance, points 14 to 16
15 to 17

Alloy Composition


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Aluminum (Al), % 0
90.6 to 94.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 24 to 26
0 to 0.2
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 48.3 to 57
0 to 0.35
Magnesium (Mg), % 0
0.5 to 1.0
Manganese (Mn), % 0 to 2.0
0 to 0.3
Nickel (Ni), % 19 to 22
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.5
0 to 0.3
Sulfur (S), % 0 to 0.030
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