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851.0 Aluminum vs. Chromium 33

851.0 aluminum belongs to the aluminum alloys classification, while chromium 33 belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (11, 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 851.0 aluminum and the bottom bar is chromium 33.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 3.9 to 9.1
45
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 130 to 140
850

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Specific Heat Capacity, J/kg-K 850
480
Thermal Expansion, µm/m-K 23
14

Otherwise Unclassified Properties

Base Metal Price, % relative 14
36
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.4
6.0
Embodied Energy, MJ/kg 160
84
Embodied Water, L/kg 1140
250

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 12 to 13
30
Strength to Weight: Bending, points 19 to 20
25
Thermal Shock Resistance, points 6.1 to 6.3
21

Alloy Composition

Aluminum (Al), % 86.6 to 91.5
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
31 to 35
Copper (Cu), % 0.7 to 1.3
0.3 to 1.2
Iron (Fe), % 0 to 0.7
25.7 to 37.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0.3 to 0.7
30 to 33
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 2.0 to 3.0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Residuals, % 0 to 0.3
0