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EN-MC65220 Magnesium vs. AWS ERNiCu-7

EN-MC65220 magnesium belongs to the magnesium alloys classification, while AWS ERNiCu-7 belongs to the nickel alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, 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 EN-MC65220 magnesium and the bottom bar is AWS ERNiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
160
Elongation at Break, % 2.2
34
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
61
Tensile Strength: Ultimate (UTS), MPa 270
550

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Melting Completion (Liquidus), °C 610
1280
Melting Onset (Solidus), °C 550
1240
Specific Heat Capacity, J/kg-K 980
440
Thermal Conductivity, W/m-K 110
20
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 80
50
Density, g/cm3 1.9
8.7
Embodied Carbon, kg CO2/kg material 27
8.5
Embodied Energy, MJ/kg 210
120

Common Calculations

Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 62
21
Strength to Weight: Axial, points 40
18
Strength to Weight: Bending, points 49
17
Thermal Diffusivity, mm2/s 61
5.3
Thermal Shock Resistance, points 17
19

Alloy Composition


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Aluminum (Al), % 0
0 to 1.3
Carbon (C), % 0
0 to 0.15
Copper (Cu), % 0.050 to 0.1
18.3 to 36.5
Iron (Fe), % 0 to 0.010
0 to 2.5
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 4.0
Nickel (Ni), % 0 to 0.0050
62 to 69
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 1.3
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
1.5 to 3.0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5