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4032 Aluminum vs. S31254 Stainless Steel

4032 aluminum belongs to the aluminum alloys classification, while S31254 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 4032 aluminum and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
190
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 6.7
40
Fatigue Strength, MPa 110
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
80
Shear Strength, MPa 260
490
Tensile Strength: Ultimate (UTS), MPa 390
720
Tensile Strength: Yield (Proof), MPa 320
330

Thermal Properties

Latent Heat of Fusion, J/g 570
300
Maximum Temperature: Mechanical, °C 180
1090
Melting Completion (Liquidus), °C 570
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 140
14
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
28
Density, g/cm3 2.6
8.0
Embodied Carbon, kg CO2/kg material 7.8
5.5
Embodied Energy, MJ/kg 140
74
Embodied Water, L/kg 1030
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
240
Resilience: Unit (Modulus of Resilience), kJ/m3 700
270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 41
25
Strength to Weight: Bending, points 45
22
Thermal Diffusivity, mm2/s 59
3.8
Thermal Shock Resistance, points 20
15

Alloy Composition

Aluminum (Al), % 81.1 to 87.2
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0 to 0.1
19.5 to 20.5
Copper (Cu), % 0.5 to 1.3
0.5 to 1.0
Iron (Fe), % 0 to 1.0
51.4 to 56.3
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0.5 to 1.3
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 11 to 13.5
0 to 0.8
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0