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328.0 Aluminum vs. S40977 Stainless Steel

328.0 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 (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 328.0 aluminum and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 82
160
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.6 to 2.1
21
Fatigue Strength, MPa 55 to 80
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 200 to 270
510
Tensile Strength: Yield (Proof), MPa 120 to 170
310

Thermal Properties

Latent Heat of Fusion, J/g 510
270
Maximum Temperature: Mechanical, °C 180
720
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 560
1400
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 120
25
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
6.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.9
Embodied Energy, MJ/kg 140
27
Embodied Water, L/kg 1070
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 5.0
92
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 200
250
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 21 to 28
18
Strength to Weight: Bending, points 28 to 34
18
Thermal Diffusivity, mm2/s 50
6.7
Thermal Shock Resistance, points 9.2 to 12
18

Alloy Composition

Aluminum (Al), % 84.5 to 91.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.35
10.5 to 12.5
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 0 to 1.0
83.9 to 89.2
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Nickel (Ni), % 0 to 0.25
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 7.5 to 8.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0 to 0.5
0