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S44800 Stainless Steel vs. 1435 Aluminum

S44800 stainless steel belongs to the iron alloys classification, while 1435 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 S44800 stainless steel and the bottom bar is 1435 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 23
4.1 to 32
Fatigue Strength, MPa 300
27 to 49
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
26
Shear Strength, MPa 370
54 to 87
Tensile Strength: Ultimate (UTS), MPa 590
81 to 150
Tensile Strength: Yield (Proof), MPa 450
23 to 130

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1410
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 17
230
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
60
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
200

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.8
8.2
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 190
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
5.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 480
3.8 to 110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21
8.3 to 15
Strength to Weight: Bending, points 20
15 to 23
Thermal Diffusivity, mm2/s 4.6
93
Thermal Shock Resistance, points 19
3.6 to 6.7

Alloy Composition

Aluminum (Al), % 0
99.35 to 99.7
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
0 to 0.020
Iron (Fe), % 62.6 to 66.5
0.3 to 0.5
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 0.15
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0
0 to 0.1