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S44735 Stainless Steel vs. 6061 Aluminum

S44735 stainless steel belongs to the iron alloys classification, while 6061 aluminum belongs to the aluminum 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 S44735 stainless steel and the bottom bar is 6061 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 21
3.4 to 20
Fatigue Strength, MPa 300
58 to 110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
26
Shear Strength, MPa 390
84 to 210
Tensile Strength: Ultimate (UTS), MPa 630
130 to 410
Tensile Strength: Yield (Proof), MPa 460
76 to 370

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 11
24

Otherwise Unclassified Properties

Base Metal Price, % relative 21
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 4.4
8.3
Embodied Energy, MJ/kg 61
150
Embodied Water, L/kg 180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
3.8 to 81
Resilience: Unit (Modulus of Resilience), kJ/m3 520
42 to 1000
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
50
Strength to Weight: Axial, points 23
13 to 42
Strength to Weight: Bending, points 21
21 to 45
Thermal Shock Resistance, points 20
5.7 to 18

Alloy Composition

Aluminum (Al), % 0
95.9 to 98.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 28 to 30
0.040 to 0.35
Copper (Cu), % 0
0.15 to 0.4
Iron (Fe), % 60.7 to 68.4
0 to 0.7
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0 to 1.0
0 to 0.15
Molybdenum (Mo), % 3.6 to 4.2
0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.4 to 0.8
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0.2 to 1.0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15