MakeItFrom.com
Menu (ESC)

S20161 Stainless Steel vs. 7108A Aluminum

S20161 stainless steel belongs to the iron alloys classification, while 7108A aluminum belongs to the aluminum 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 S20161 stainless steel and the bottom bar is 7108A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 46
11 to 13
Fatigue Strength, MPa 360
120 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 690
210
Tensile Strength: Ultimate (UTS), MPa 980
350
Tensile Strength: Yield (Proof), MPa 390
290 to 300

Thermal Properties

Latent Heat of Fusion, J/g 330
380
Maximum Temperature: Mechanical, °C 870
210
Melting Completion (Liquidus), °C 1380
630
Melting Onset (Solidus), °C 1330
520
Specific Heat Capacity, J/kg-K 490
870
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
36
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 7.5
2.9
Embodied Carbon, kg CO2/kg material 2.7
8.3
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 130
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 360
38 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 390
610 to 640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
47
Strength to Weight: Axial, points 36
33 to 34
Strength to Weight: Bending, points 29
38
Thermal Diffusivity, mm2/s 4.0
59
Thermal Shock Resistance, points 22
15 to 16

Alloy Composition

Aluminum (Al), % 0
91.6 to 94.4
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 15 to 18
0 to 0.040
Copper (Cu), % 0
0 to 0.050
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 65.6 to 73.9
0 to 0.3
Magnesium (Mg), % 0
0.7 to 1.5
Manganese (Mn), % 4.0 to 6.0
0 to 0.050
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 3.0 to 4.0
0 to 0.2
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0
4.8 to 5.8
Zirconium (Zr), % 0
0.15 to 0.25
Residuals, % 0
0 to 0.15