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AWS ERNiCu-7 vs. M1A Magnesium

AWS ERNiCu-7 belongs to the nickel alloys classification, while M1A 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 ERNiCu-7 and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
45
Elongation at Break, % 34
5.5
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
18
Tensile Strength: Ultimate (UTS), MPa 550
230

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Melting Completion (Liquidus), °C 1280
610
Melting Onset (Solidus), °C 1240
580
Specific Heat Capacity, J/kg-K 440
990
Thermal Conductivity, W/m-K 20
150
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.2
35
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
190

Otherwise Unclassified Properties

Base Metal Price, % relative 50
12
Density, g/cm3 8.7
1.7
Embodied Carbon, kg CO2/kg material 8.5
24
Embodied Energy, MJ/kg 120
160
Embodied Water, L/kg 250
970

Common Calculations

Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
71
Strength to Weight: Axial, points 18
38
Strength to Weight: Bending, points 17
49
Thermal Diffusivity, mm2/s 5.3
88
Thermal Shock Resistance, points 19
13

Alloy Composition

Aluminum (Al), % 0 to 1.3
0
Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.15
0
Copper (Cu), % 18.3 to 36.5
0 to 0.050
Iron (Fe), % 0 to 2.5
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 4.0
1.2 to 2.0
Nickel (Ni), % 62 to 69
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.3
0 to 0.1
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 1.5 to 3.0
0
Residuals, % 0
0 to 0.3