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S40977 Stainless Steel vs. C443.0 Aluminum

S40977 stainless steel belongs to the iron alloys classification, while C443.0 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 C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
65
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 21
9.0
Fatigue Strength, MPa 200
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Shear Strength, MPa 320
130
Tensile Strength: Ultimate (UTS), MPa 510
230
Tensile Strength: Yield (Proof), MPa 310
100

Thermal Properties

Latent Heat of Fusion, J/g 270
470
Maximum Temperature: Mechanical, °C 720
170
Melting Completion (Liquidus), °C 1440
630
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
140
Thermal Expansion, µm/m-K 10
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
37
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
120

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
7.9
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 97
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
17
Resilience: Unit (Modulus of Resilience), kJ/m3 250
70
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
31
Thermal Diffusivity, mm2/s 6.7
58
Thermal Shock Resistance, points 18
10

Alloy Composition

Aluminum (Al), % 0
89.6 to 95.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 10.5 to 12.5
0
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 83.9 to 89.2
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.35
Nickel (Ni), % 0.3 to 1.0
0 to 0.5
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
4.5 to 6.0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.25