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850.0 Aluminum vs. S41050 Stainless Steel

850.0 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 850.0 aluminum and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45
160
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 7.9
25
Fatigue Strength, MPa 59
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 100
300
Tensile Strength: Ultimate (UTS), MPa 140
470
Tensile Strength: Yield (Proof), MPa 76
230

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 190
720
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 370
1400
Specific Heat Capacity, J/kg-K 850
480
Thermal Conductivity, W/m-K 180
27
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
7.0
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.5
1.9
Embodied Energy, MJ/kg 160
27
Embodied Water, L/kg 1160
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1
98
Resilience: Unit (Modulus of Resilience), kJ/m3 42
140
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 12
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 69
7.2
Thermal Shock Resistance, points 6.1
17

Alloy Composition

Aluminum (Al), % 88.3 to 93.1
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 0.7 to 1.3
0
Iron (Fe), % 0 to 0.7
84.2 to 88.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Nickel (Ni), % 0.7 to 1.3
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Residuals, % 0 to 0.3
0