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A242.0 Aluminum vs. S46500 Stainless Steel

A242.0 aluminum belongs to the aluminum alloys classification, while S46500 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 A242.0 aluminum and the bottom bar is S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 1.6
2.3 to 14
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 220
1260 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 210
780
Melting Completion (Liquidus), °C 680
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Expansion, µm/m-K 23
11

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.3
3.6
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1130
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 20
44 to 68
Strength to Weight: Bending, points 26
33 to 44
Thermal Shock Resistance, points 9.3
44 to 67

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0.15 to 0.25
11 to 12.5
Copper (Cu), % 3.7 to 4.5
0
Iron (Fe), % 0 to 0.8
72.6 to 76.1
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0 to 0.25
Molybdenum (Mo), % 0
0.75 to 1.3
Nickel (Ni), % 1.8 to 2.3
10.7 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.6
0 to 0.25
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0.070 to 0.2
1.5 to 1.8
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0