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771.0 Aluminum vs. S32615 Stainless Steel

771.0 aluminum belongs to the aluminum alloys classification, while S32615 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 771.0 aluminum and the bottom bar is S32615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85 to 120
170
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.7 to 6.5
28
Fatigue Strength, MPa 92 to 180
180
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 250 to 370
620
Tensile Strength: Yield (Proof), MPa 210 to 350
250

Thermal Properties

Latent Heat of Fusion, J/g 380
370
Maximum Temperature: Mechanical, °C 180
990
Melting Completion (Liquidus), °C 630
1350
Melting Onset (Solidus), °C 620
1310
Specific Heat Capacity, J/kg-K 870
500
Thermal Expansion, µm/m-K 24
15

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 3.0
7.6
Embodied Carbon, kg CO2/kg material 8.0
4.4
Embodied Energy, MJ/kg 150
63
Embodied Water, L/kg 1130
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4 to 20
140
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 900
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 23 to 35
23
Strength to Weight: Bending, points 29 to 39
21
Thermal Shock Resistance, points 11 to 16
15

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0.060 to 0.2
16.5 to 19.5
Copper (Cu), % 0 to 0.1
1.5 to 2.5
Iron (Fe), % 0 to 0.15
46.4 to 57.9
Magnesium (Mg), % 0.8 to 1.0
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
0.3 to 1.5
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.15
4.8 to 6.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 6.5 to 7.5
0
Residuals, % 0 to 0.15
0