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ISO-WD43150 Magnesium vs. Chromium 33

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while chromium 33 belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 ISO-WD43150 magnesium and the bottom bar is chromium 33.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 2.8
45
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
81
Tensile Strength: Ultimate (UTS), MPa 250
850
Tensile Strength: Yield (Proof), MPa 150
430

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Specific Heat Capacity, J/kg-K 990
480
Thermal Expansion, µm/m-K 27
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 24
6.0
Embodied Energy, MJ/kg 160
84
Embodied Water, L/kg 970
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
320
Resilience: Unit (Modulus of Resilience), kJ/m3 250
450
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 41
30
Strength to Weight: Bending, points 52
25
Thermal Shock Resistance, points 14
21

Alloy Composition


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Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
31 to 35
Copper (Cu), % 0 to 0.050
0.3 to 1.2
Iron (Fe), % 0
25.7 to 37.9
Magnesium (Mg), % 97.5 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0 to 0.010
30 to 33
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Residuals, % 0 to 0.3
0