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1080A Aluminum vs. AISI 446 Stainless Steel

1080A aluminum belongs to the aluminum alloys classification, while AISI 446 stainless steel belongs to the iron alloys. There are 31 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 1080A aluminum and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 2.3 to 34
23
Fatigue Strength, MPa 18 to 50
200
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
79
Shear Strength, MPa 49 to 81
360
Tensile Strength: Ultimate (UTS), MPa 74 to 140
570
Tensile Strength: Yield (Proof), MPa 17 to 120
300

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 170
1180
Melting Completion (Liquidus), °C 640
1510
Melting Onset (Solidus), °C 640
1430
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 230
17
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 62
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 200
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
2.4
Embodied Energy, MJ/kg 160
35
Embodied Water, L/kg 1200
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 19
110
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
26
Strength to Weight: Axial, points 7.6 to 15
21
Strength to Weight: Bending, points 14 to 22
20
Thermal Diffusivity, mm2/s 94
4.6
Thermal Shock Resistance, points 3.3 to 6.4
19

Alloy Composition

Aluminum (Al), % 99.8 to 100
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
23 to 27
Copper (Cu), % 0 to 0.030
0
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.15
69.2 to 77
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0 to 0.020
0 to 1.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.060
0