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2030 Aluminum vs. AISI 308 Stainless Steel

2030 aluminum belongs to the aluminum alloys classification, while AISI 308 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 2030 aluminum and the bottom bar is AISI 308 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 5.6 to 8.0
45
Fatigue Strength, MPa 91 to 110
210
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 220 to 250
410
Tensile Strength: Ultimate (UTS), MPa 370 to 420
590
Tensile Strength: Yield (Proof), MPa 240 to 270
230

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 190
990
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 510
1380
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 10
17
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.0
3.2
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1140
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
210
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 530
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 33 to 38
21
Strength to Weight: Bending, points 37 to 40
20
Thermal Diffusivity, mm2/s 50
4.1
Thermal Shock Resistance, points 16 to 19
13

Alloy Composition

Aluminum (Al), % 88.9 to 95.2
0
Bismuth (Bi), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
19 to 21
Copper (Cu), % 3.3 to 4.5
0
Iron (Fe), % 0 to 0.7
64.1 to 71
Lead (Pb), % 0.8 to 1.5
0
Magnesium (Mg), % 0.5 to 1.3
0
Manganese (Mn), % 0.2 to 1.0
0 to 2.0
Nickel (Ni), % 0
10 to 12
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0