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1050 Aluminum vs. S32906 Stainless Steel

1050 aluminum belongs to the aluminum alloys classification, while S32906 stainless steel belongs to the iron 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 1050 aluminum and the bottom bar is S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 4.6 to 37
28
Fatigue Strength, MPa 31 to 57
460
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Shear Strength, MPa 52 to 81
550
Tensile Strength: Ultimate (UTS), MPa 76 to 140
850
Tensile Strength: Yield (Proof), MPa 25 to 120
620

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 650
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
13
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 200
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
3.7
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 1200
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 22
220
Resilience: Unit (Modulus of Resilience), kJ/m3 4.6 to 110
950
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.8 to 14
30
Strength to Weight: Bending, points 15 to 22
26
Thermal Diffusivity, mm2/s 94
3.6
Thermal Shock Resistance, points 3.4 to 6.2
23

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0 to 0.050
0 to 0.8
Iron (Fe), % 0 to 0.4
56.6 to 63.6
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0.8 to 1.5
Molybdenum (Mo), % 0
1.5 to 2.6
Nickel (Ni), % 0
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0