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AWS ENiCu-7 vs. AZ31C Magnesium

AWS ENiCu-7 belongs to the nickel alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 AWS ENiCu-7 and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
45
Elongation at Break, % 34
12
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
17
Tensile Strength: Ultimate (UTS), MPa 550
260

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Melting Completion (Liquidus), °C 1270
600
Melting Onset (Solidus), °C 1230
550
Specific Heat Capacity, J/kg-K 430
990
Thermal Conductivity, W/m-K 21
130
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
19
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
98

Otherwise Unclassified Properties

Base Metal Price, % relative 50
12
Density, g/cm3 8.7
1.7
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 250
970

Common Calculations

Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
70
Strength to Weight: Axial, points 17
42
Strength to Weight: Bending, points 17
53
Thermal Diffusivity, mm2/s 5.5
74
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 0 to 0.75
2.4 to 3.6
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 20.6 to 38
0 to 0.1
Iron (Fe), % 0 to 2.5
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 0 to 4.0
0.15 to 1.0
Nickel (Ni), % 62 to 69
0 to 0.030
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0 to 1.0
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3