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S35115 Stainless Steel vs. 1050 Aluminum

S35115 stainless steel belongs to the iron alloys classification, while 1050 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 S35115 stainless steel and the bottom bar is 1050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 46
4.6 to 37
Fatigue Strength, MPa 280
31 to 57
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 470
52 to 81
Tensile Strength: Ultimate (UTS), MPa 670
76 to 140
Tensile Strength: Yield (Proof), MPa 310
25 to 120

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1370
650
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
230
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
61
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
200

Otherwise Unclassified Properties

Base Metal Price, % relative 26
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.3
Embodied Energy, MJ/kg 67
160
Embodied Water, L/kg 190
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
5.4 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 240
4.6 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24
7.8 to 14
Strength to Weight: Bending, points 22
15 to 22
Thermal Diffusivity, mm2/s 3.9
94
Thermal Shock Resistance, points 15
3.4 to 6.2

Alloy Composition

Aluminum (Al), % 0
99.5 to 100
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 47.6 to 55.8
0 to 0.4
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.050
Molybdenum (Mo), % 1.5 to 2.5
0
Nickel (Ni), % 19 to 22
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0.5 to 1.5
0 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050