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4032 Aluminum vs. S31730 Stainless Steel

4032 aluminum belongs to the aluminum alloys classification, while S31730 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
180
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 6.7
40
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Shear Strength, MPa 260
370
Tensile Strength: Ultimate (UTS), MPa 390
540
Tensile Strength: Yield (Proof), MPa 320
200

Thermal Properties

Latent Heat of Fusion, J/g 570
290
Maximum Temperature: Mechanical, °C 180
990
Melting Completion (Liquidus), °C 570
1430
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 19
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 2.6
8.0
Embodied Carbon, kg CO2/kg material 7.8
4.6
Embodied Energy, MJ/kg 140
63
Embodied Water, L/kg 1030
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
170
Resilience: Unit (Modulus of Resilience), kJ/m3 700
99
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 41
19
Strength to Weight: Bending, points 45
18
Thermal Shock Resistance, points 20
12

Alloy Composition

Aluminum (Al), % 81.1 to 87.2
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
17 to 19
Copper (Cu), % 0.5 to 1.3
4.0 to 5.0
Iron (Fe), % 0 to 1.0
52.4 to 61
Magnesium (Mg), % 0.8 to 1.3
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0.5 to 1.3
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 11 to 13.5
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0