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S31277 Stainless Steel vs. 2195 Aluminum

S31277 stainless steel belongs to the iron alloys classification, while 2195 aluminum belongs to the aluminum alloys. There are 26 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 2195 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 45
9.3
Fatigue Strength, MPa 380
190
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Shear Strength, MPa 600
350
Tensile Strength: Ultimate (UTS), MPa 860
590
Tensile Strength: Yield (Proof), MPa 410
560

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1410
550
Specific Heat Capacity, J/kg-K 460
900
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 36
31
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 6.7
8.6
Embodied Energy, MJ/kg 90
160
Embodied Water, L/kg 220
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
54
Resilience: Unit (Modulus of Resilience), kJ/m3 410
2290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 29
55
Strength to Weight: Bending, points 25
53
Thermal Shock Resistance, points 19
26

Alloy Composition


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Aluminum (Al), % 0
91.9 to 94.9
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 20.5 to 23
0
Copper (Cu), % 0.5 to 1.5
3.7 to 4.3
Iron (Fe), % 35.5 to 46.2
0 to 0.15
Lithium (Li), % 0
0.8 to 1.2
Magnesium (Mg), % 0
0.25 to 0.8
Manganese (Mn), % 0 to 3.0
0 to 0.25
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 0.12
Silver (Ag), % 0
0.25 to 0.6
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.080 to 0.16
Residuals, % 0
0 to 0.15