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AZ91B Magnesium vs. AWS ENiCrCoMo-1

AZ91B magnesium belongs to the magnesium alloys classification, while AWS ENiCrCoMo-1 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 AZ91B magnesium and the bottom bar is AWS ENiCrCoMo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
210
Elongation at Break, % 5.0
28
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
82
Tensile Strength: Ultimate (UTS), MPa 240
710

Thermal Properties

Latent Heat of Fusion, J/g 360
330
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 470
1380
Specific Heat Capacity, J/kg-K 990
440
Thermal Expansion, µm/m-K 26
13

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 22
11
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
340

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
23
Strength to Weight: Axial, points 38
23
Strength to Weight: Bending, points 49
21
Thermal Shock Resistance, points 14
19

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
21 to 26
Cobalt (Co), % 0
9.0 to 15
Copper (Cu), % 0 to 0.35
0 to 0.5
Iron (Fe), % 0
0 to 5.0
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0.3 to 2.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0 to 0.030
38.6 to 61.7
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 0.5