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S46500 Stainless Steel vs. A384.0 Aluminum

S46500 stainless steel belongs to the iron alloys classification, while A384.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 A384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
74
Elongation at Break, % 2.3 to 14
2.5
Fatigue Strength, MPa 550 to 890
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
28
Shear Strength, MPa 730 to 1120
200
Tensile Strength: Ultimate (UTS), MPa 1260 to 1930
330
Tensile Strength: Yield (Proof), MPa 1120 to 1810
170

Thermal Properties

Latent Heat of Fusion, J/g 280
550
Maximum Temperature: Mechanical, °C 780
170
Melting Completion (Liquidus), °C 1450
610
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 470
880
Thermal Expansion, µm/m-K 11
21

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 3.6
7.5
Embodied Energy, MJ/kg 51
140
Embodied Water, L/kg 120
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 210
6.9
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 44 to 68
32
Strength to Weight: Bending, points 33 to 44
38
Thermal Shock Resistance, points 44 to 67
15

Alloy Composition

Aluminum (Al), % 0
79.3 to 86.5
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 0
3.0 to 4.5
Iron (Fe), % 72.6 to 76.1
0 to 1.3
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 to 0.5
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.25
10.5 to 12
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.35
Titanium (Ti), % 1.5 to 1.8
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5