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S32001 Stainless Steel vs. 7076 Aluminum

S32001 stainless steel belongs to the iron alloys classification, while 7076 aluminum belongs to the aluminum 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 S32001 stainless steel and the bottom bar is 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 28
6.2
Fatigue Strength, MPa 370
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
27
Shear Strength, MPa 450
310
Tensile Strength: Ultimate (UTS), MPa 690
530
Tensile Strength: Yield (Proof), MPa 510
460

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 970
170
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1370
460
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
100

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.7
3.0
Embodied Carbon, kg CO2/kg material 2.6
8.0
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
31
Resilience: Unit (Modulus of Resilience), kJ/m3 660
1510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 25
49
Strength to Weight: Bending, points 23
48
Thermal Diffusivity, mm2/s 4.0
54
Thermal Shock Resistance, points 19
23

Alloy Composition

Aluminum (Al), % 0
86.9 to 91.2
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19.5 to 21.5
0
Copper (Cu), % 0 to 1.0
0.3 to 1.0
Iron (Fe), % 66.6 to 75.5
0 to 0.6
Magnesium (Mg), % 0
1.2 to 2.0
Manganese (Mn), % 4.0 to 6.0
0.3 to 0.8
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 1.0 to 3.0
0
Nitrogen (N), % 0.050 to 0.17
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
7.0 to 8.0
Residuals, % 0
0 to 0.15