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4007 Aluminum vs. S42300 Stainless Steel

4007 aluminum belongs to the aluminum alloys classification, while S42300 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 4007 aluminum and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32 to 44
330
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 5.1 to 23
9.1
Fatigue Strength, MPa 46 to 88
440
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 80 to 90
650
Tensile Strength: Ultimate (UTS), MPa 130 to 160
1100
Tensile Strength: Yield (Proof), MPa 50 to 120
850

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 170
750
Melting Completion (Liquidus), °C 650
1470
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
25
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.1
3.2
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1160
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.4 to 23
93
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 110
1840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 12 to 15
39
Strength to Weight: Bending, points 20 to 23
30
Thermal Diffusivity, mm2/s 67
6.8
Thermal Shock Resistance, points 5.5 to 6.7
40

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
0
Carbon (C), % 0
0.27 to 0.32
Chromium (Cr), % 0.050 to 0.25
11 to 12
Cobalt (Co), % 0 to 0.050
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0.4 to 1.0
82 to 85.1
Magnesium (Mg), % 0 to 0.2
0
Manganese (Mn), % 0.8 to 1.5
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0.15 to 0.7
0 to 0.5
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 1.0 to 1.7
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.2 to 0.3
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0