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852.0 Aluminum vs. AISI 431 Stainless Steel

852.0 aluminum belongs to the aluminum alloys classification, while AISI 431 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 852.0 aluminum and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 64
250
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.4
15 to 17
Fatigue Strength, MPa 73
430 to 610
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 130
550 to 840
Tensile Strength: Ultimate (UTS), MPa 200
890 to 1380
Tensile Strength: Yield (Proof), MPa 150
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 190
850
Melting Completion (Liquidus), °C 640
1510
Melting Onset (Solidus), °C 210
1450
Specific Heat Capacity, J/kg-K 840
480
Thermal Conductivity, W/m-K 180
26
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.0
Density, g/cm3 3.2
7.7
Embodied Carbon, kg CO2/kg material 8.5
2.2
Embodied Energy, MJ/kg 160
31
Embodied Water, L/kg 1150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.2
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1270 to 2770
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 17
32 to 50
Strength to Weight: Bending, points 24
27 to 36
Thermal Diffusivity, mm2/s 65
7.0
Thermal Shock Resistance, points 8.7
28 to 43

Alloy Composition

Aluminum (Al), % 86.6 to 91.3
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 1.7 to 2.3
0
Iron (Fe), % 0 to 0.7
78.2 to 83.8
Magnesium (Mg), % 0.6 to 0.9
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Nickel (Ni), % 0.9 to 1.5
1.3 to 2.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Residuals, % 0 to 0.3
0