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S39274 Stainless Steel vs. 6182 Aluminum

S39274 stainless steel belongs to the iron alloys classification, while 6182 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 S39274 stainless steel and the bottom bar is 6182 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 17
6.8 to 13
Fatigue Strength, MPa 380
63 to 99
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
26
Shear Strength, MPa 560
140 to 190
Tensile Strength: Ultimate (UTS), MPa 900
230 to 320
Tensile Strength: Yield (Proof), MPa 620
130 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1480
640
Melting Onset (Solidus), °C 1430
600
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 16
160
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 4.3
8.4
Embodied Energy, MJ/kg 60
150
Embodied Water, L/kg 180
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 940
110 to 520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 32
23 to 32
Strength to Weight: Bending, points 26
30 to 38
Thermal Diffusivity, mm2/s 4.2
65
Thermal Shock Resistance, points 25
10 to 14

Alloy Composition

Aluminum (Al), % 0
95 to 97.9
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 24 to 26
0 to 0.25
Copper (Cu), % 0.2 to 0.8
0 to 0.1
Iron (Fe), % 57 to 65.6
0 to 0.5
Magnesium (Mg), % 0
0.7 to 1.2
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.8
0.9 to 1.3
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 1.5 to 2.5
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.050 to 0.2
Residuals, % 0
0 to 0.15