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S40977 Stainless Steel vs. 518.0 Aluminum

S40977 stainless steel belongs to the iron alloys classification, while 518.0 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 S40977 stainless steel and the bottom bar is 518.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
80
Elastic (Young's, Tensile) Modulus, GPa 190
67
Elongation at Break, % 21
5.0
Fatigue Strength, MPa 200
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
25
Shear Strength, MPa 320
200
Tensile Strength: Ultimate (UTS), MPa 510
310
Tensile Strength: Yield (Proof), MPa 310
190

Thermal Properties

Latent Heat of Fusion, J/g 270
390
Maximum Temperature: Mechanical, °C 720
170
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
98
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
24
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
81

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
9.4
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 97
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
14
Resilience: Unit (Modulus of Resilience), kJ/m3 250
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
38
Thermal Diffusivity, mm2/s 6.7
40
Thermal Shock Resistance, points 18
14

Alloy Composition

Aluminum (Al), % 0
88.1 to 92.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 10.5 to 12.5
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 83.9 to 89.2
0 to 1.8
Magnesium (Mg), % 0
7.5 to 8.5
Manganese (Mn), % 0 to 1.5
0 to 0.35
Nickel (Ni), % 0.3 to 1.0
0 to 0.15
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.35
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25