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A357.0 Aluminum vs. S41050 Stainless Steel

A357.0 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 (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 A357.0 aluminum and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100
160
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.7
25
Fatigue Strength, MPa 100
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 240
300
Tensile Strength: Ultimate (UTS), MPa 350
470
Tensile Strength: Yield (Proof), MPa 270
230

Thermal Properties

Latent Heat of Fusion, J/g 500
270
Maximum Temperature: Mechanical, °C 170
720
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 560
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
27
Thermal Expansion, µm/m-K 21
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.0
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 1110
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
98
Resilience: Unit (Modulus of Resilience), kJ/m3 520
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 43
17
Thermal Diffusivity, mm2/s 68
7.2
Thermal Shock Resistance, points 17
17

Alloy Composition

Aluminum (Al), % 90.8 to 93
0
Beryllium (Be), % 0.040 to 0.070
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.2
84.2 to 88.9
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Nickel (Ni), % 0
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 6.5 to 7.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.040 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0