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AZ91A Magnesium vs. AWS ENiCrFe-2

AZ91A magnesium belongs to the magnesium alloys classification, while AWS ENiCrFe-2 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, 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 AZ91A magnesium and the bottom bar is AWS ENiCrFe-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
28
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 18
74
Tensile Strength: Ultimate (UTS), MPa 240
790

Thermal Properties

Latent Heat of Fusion, J/g 360
310
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 470
1350
Specific Heat Capacity, J/kg-K 990
450
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
65
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 22
11
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 990
260

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
23
Strength to Weight: Axial, points 38
26
Strength to Weight: Bending, points 49
22
Thermal Shock Resistance, points 14
24

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
13 to 17
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 0 to 0.1
0 to 0.5
Iron (Fe), % 0
0 to 12
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
1.0 to 3.5
Molybdenum (Mo), % 0
0.5 to 2.5
Nickel (Ni), % 0 to 0.030
62 to 85
Niobium (Nb), % 0
0.5 to 4.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 0.5