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AISI 301 Stainless Steel vs. B443.0 Aluminum

AISI 301 stainless steel belongs to the iron alloys classification, while B443.0 aluminum belongs to the aluminum 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 AISI 301 stainless steel and the bottom bar is B443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 440
43
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 7.4 to 46
4.9
Fatigue Strength, MPa 210 to 600
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 410 to 860
110
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
150
Tensile Strength: Yield (Proof), MPa 230 to 1080
50

Thermal Properties

Latent Heat of Fusion, J/g 280
470
Maximum Temperature: Mechanical, °C 840
170
Melting Completion (Liquidus), °C 1420
620
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
130

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.7
8.0
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 130
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
18
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 21 to 52
15
Strength to Weight: Bending, points 20 to 37
23
Thermal Diffusivity, mm2/s 4.2
61
Thermal Shock Resistance, points 12 to 31
6.8

Alloy Composition

Aluminum (Al), % 0
91.9 to 95.5
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 70.7 to 78
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.35
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
4.5 to 6.0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15