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319.0 Aluminum vs. S41050 Stainless Steel

319.0 aluminum belongs to the aluminum alloys classification, while S41050 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 319.0 aluminum and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 78 to 84
160
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.8 to 2.0
25
Fatigue Strength, MPa 76 to 80
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 170 to 210
300
Tensile Strength: Ultimate (UTS), MPa 190 to 240
470
Tensile Strength: Yield (Proof), MPa 110 to 180
230

Thermal Properties

Latent Heat of Fusion, J/g 480
270
Maximum Temperature: Mechanical, °C 170
720
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 540
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 110
27
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 84
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.9
Embodied Energy, MJ/kg 140
27
Embodied Water, L/kg 1080
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3 to 3.9
98
Resilience: Unit (Modulus of Resilience), kJ/m3 88 to 220
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 18 to 24
17
Strength to Weight: Bending, points 25 to 30
17
Thermal Diffusivity, mm2/s 44
7.2
Thermal Shock Resistance, points 8.6 to 11
17

Alloy Composition

Aluminum (Al), % 85.8 to 91.5
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 1.0
84.2 to 88.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.35
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 5.5 to 6.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0