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S44800 Stainless Steel vs. 1050 Aluminum

S44800 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 (6, 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 S44800 stainless steel and the bottom bar is 1050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 23
4.6 to 37
Fatigue Strength, MPa 300
31 to 57
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
26
Shear Strength, MPa 370
52 to 81
Tensile Strength: Ultimate (UTS), MPa 590
76 to 140
Tensile Strength: Yield (Proof), MPa 450
25 to 120

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
650
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 17
230
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
61
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
200

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.8
8.3
Embodied Energy, MJ/kg 52
160
Embodied Water, L/kg 190
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
5.4 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 480
4.6 to 110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21
7.8 to 14
Strength to Weight: Bending, points 20
15 to 22
Thermal Diffusivity, mm2/s 4.6
94
Thermal Shock Resistance, points 19
3.4 to 6.2

Alloy Composition

Aluminum (Al), % 0
99.5 to 100
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
0 to 0.050
Iron (Fe), % 62.6 to 66.5
0 to 0.4
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.3
0 to 0.050
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 2.0 to 2.5
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.2
0 to 0.25
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050