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S40977 Stainless Steel vs. 5042 Aluminum

S40977 stainless steel belongs to the iron alloys classification, while 5042 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 S40977 stainless steel and the bottom bar is 5042 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 21
1.1 to 3.4
Fatigue Strength, MPa 200
97 to 120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 320
200
Tensile Strength: Ultimate (UTS), MPa 510
340 to 360
Tensile Strength: Yield (Proof), MPa 310
270 to 310

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 720
180
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
130
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
33
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.9
8.8
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 97
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
3.6 to 12
Resilience: Unit (Modulus of Resilience), kJ/m3 250
550 to 720
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 18
35 to 37
Strength to Weight: Bending, points 18
40 to 42
Thermal Diffusivity, mm2/s 6.7
53
Thermal Shock Resistance, points 18
15 to 16

Alloy Composition

Aluminum (Al), % 0
94.2 to 96.8
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 10.5 to 12.5
0 to 0.1
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 83.9 to 89.2
0 to 0.35
Magnesium (Mg), % 0
3.0 to 4.0
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Nickel (Ni), % 0.3 to 1.0
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15