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AISI 302 Stainless Steel vs. 443.0 Aluminum

AISI 302 stainless steel belongs to the iron alloys classification, while 443.0 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 302 stainless steel and the bottom bar is 443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 440
41
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 4.5 to 46
5.6
Fatigue Strength, MPa 210 to 520
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 400 to 830
96
Tensile Strength: Ultimate (UTS), MPa 580 to 1430
150
Tensile Strength: Yield (Proof), MPa 230 to 1100
65

Thermal Properties

Latent Heat of Fusion, J/g 280
470
Maximum Temperature: Mechanical, °C 710
180
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1400
580
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 2.8
130

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 42
150
Embodied Water, L/kg 140
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 260
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 3070
30
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 21 to 51
16
Strength to Weight: Bending, points 20 to 36
23
Thermal Diffusivity, mm2/s 4.4
61
Thermal Shock Resistance, points 12 to 31
6.9

Alloy Composition

Aluminum (Al), % 0
90.7 to 95.5
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 17 to 19
0 to 0.25
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 67.9 to 75
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.5
Nickel (Ni), % 8.0 to 10
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
4.5 to 6.0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.35