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S31277 Stainless Steel vs. Sintered 2014 Aluminum

S31277 stainless steel belongs to the iron alloys classification, while sintered 2014 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 S31277 stainless steel and the bottom bar is sintered 2014 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 45
0.5 to 3.0
Fatigue Strength, MPa 380
52 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 860
140 to 290
Tensile Strength: Yield (Proof), MPa 410
97 to 280

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1410
560
Specific Heat Capacity, J/kg-K 460
880
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 8.1
2.9
Embodied Carbon, kg CO2/kg material 6.7
8.0
Embodied Energy, MJ/kg 90
150
Embodied Water, L/kg 220
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
1.0 to 5.7
Resilience: Unit (Modulus of Resilience), kJ/m3 410
68 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 29
13 to 27
Strength to Weight: Bending, points 25
20 to 33
Thermal Shock Resistance, points 19
6.2 to 13

Alloy Composition


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Aluminum (Al), % 0
91.5 to 96.3
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 20.5 to 23
0
Copper (Cu), % 0.5 to 1.5
3.5 to 5.0
Iron (Fe), % 35.5 to 46.2
0
Magnesium (Mg), % 0
0.2 to 0.8
Manganese (Mn), % 0 to 3.0
0
Molybdenum (Mo), % 6.5 to 8.0
0
Nickel (Ni), % 26 to 28
0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 1.2
Sulfur (S), % 0 to 0.010
0
Residuals, % 0
0 to 1.5