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S46500 Stainless Steel vs. 308.0 Aluminum

S46500 stainless steel belongs to the iron alloys classification, while 308.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, 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 S46500 stainless steel and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 2.3 to 14
2.0
Fatigue Strength, MPa 550 to 890
89
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
27
Shear Strength, MPa 730 to 1120
150
Tensile Strength: Ultimate (UTS), MPa 1260 to 1930
190
Tensile Strength: Yield (Proof), MPa 1120 to 1810
110

Thermal Properties

Latent Heat of Fusion, J/g 280
470
Maximum Temperature: Mechanical, °C 780
170
Melting Completion (Liquidus), °C 1450
620
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 470
870
Thermal Expansion, µm/m-K 11
20

Otherwise Unclassified Properties

Base Metal Price, % relative 15
10
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 3.6
7.7
Embodied Energy, MJ/kg 51
140
Embodied Water, L/kg 120
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 210
3.3
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 44 to 68
18
Strength to Weight: Bending, points 33 to 44
25
Thermal Shock Resistance, points 44 to 67
9.2

Alloy Composition

Aluminum (Al), % 0
85.7 to 91
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 72.6 to 76.1
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 0.25
0 to 0.5
Molybdenum (Mo), % 0.75 to 1.3
0
Nickel (Ni), % 10.7 to 11.3
0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.25
5.0 to 6.0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 1.5 to 1.8
0 to 0.25
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5