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S20432 Stainless Steel vs. 1230A Aluminum

S20432 stainless steel belongs to the iron alloys classification, while 1230A aluminum belongs to the aluminum alloys. There are 30 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 S20432 stainless steel and the bottom bar is 1230A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 45
4.5 to 34
Fatigue Strength, MPa 210
35 to 74
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 400
59 to 99
Tensile Strength: Ultimate (UTS), MPa 580
89 to 170
Tensile Strength: Yield (Proof), MPa 230
29 to 150

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 900
170
Melting Completion (Liquidus), °C 1410
640
Melting Onset (Solidus), °C 1370
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
230
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
60
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
200

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.7
8.2
Embodied Energy, MJ/kg 38
150
Embodied Water, L/kg 140
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
6.4 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 140
5.9 to 150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21
9.1 to 17
Strength to Weight: Bending, points 20
16 to 25
Thermal Diffusivity, mm2/s 4.0
93
Thermal Shock Resistance, points 13
4.0 to 7.6

Alloy Composition

Aluminum (Al), % 0
99.3 to 100
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 18
0
Copper (Cu), % 2.0 to 3.0
0 to 0.1
Iron (Fe), % 66.7 to 74
0 to 0.7
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 3.0 to 5.0
0 to 0.050
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.050