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5082 Aluminum vs. S40977 Stainless Steel

5082 aluminum belongs to the aluminum alloys classification, while S40977 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 5082 aluminum and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Elongation at Break, % 1.1
21
Fatigue Strength, MPa 110 to 130
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
76
Shear Strength, MPa 210 to 230
320
Tensile Strength: Ultimate (UTS), MPa 380 to 400
510
Tensile Strength: Yield (Proof), MPa 300 to 340
310

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 180
720
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 560
1400
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 130
25
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
6.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.9
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 1180
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 4.3
92
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 870
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 39 to 41
18
Strength to Weight: Bending, points 43 to 45
18
Thermal Diffusivity, mm2/s 54
6.7
Thermal Shock Resistance, points 17 to 18
18

Alloy Composition

Aluminum (Al), % 93.5 to 96
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.15
10.5 to 12.5
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.35
83.9 to 89.2
Magnesium (Mg), % 4.0 to 5.0
0
Manganese (Mn), % 0 to 0.15
0 to 1.5
Nickel (Ni), % 0
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0