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S41003 Stainless Steel vs. 4007 Aluminum

S41003 stainless steel belongs to the iron alloys classification, while 4007 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 S41003 stainless steel and the bottom bar is 4007 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
32 to 44
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 21
5.1 to 23
Fatigue Strength, MPa 200
46 to 88
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Shear Strength, MPa 320
80 to 90
Tensile Strength: Ultimate (UTS), MPa 520
130 to 160
Tensile Strength: Yield (Proof), MPa 310
50 to 120

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 720
170
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1400
590
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 27
170
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
42
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
140

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.9
8.1
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 97
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
7.4 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 240
18 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 19
12 to 15
Strength to Weight: Bending, points 18
20 to 23
Thermal Diffusivity, mm2/s 7.2
67
Thermal Shock Resistance, points 19
5.5 to 6.7

Alloy Composition

Aluminum (Al), % 0
94.1 to 97.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 10.5 to 12.5
0.050 to 0.25
Cobalt (Co), % 0
0 to 0.050
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 83.4 to 89.5
0.4 to 1.0
Magnesium (Mg), % 0
0 to 0.2
Manganese (Mn), % 0 to 1.5
0.8 to 1.5
Nickel (Ni), % 0 to 1.5
0.15 to 0.7
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
1.0 to 1.7
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15