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AZ61A Magnesium vs. AWS E70C-Ni2

AZ61A magnesium belongs to the magnesium alloys classification, while AWS E70C-Ni2 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 AZ61A magnesium and the bottom bar is AWS E70C-Ni2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
27
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 280
560
Tensile Strength: Yield (Proof), MPa 170
450

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 79
52
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 62
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.3
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.6
Embodied Energy, MJ/kg 160
22
Embodied Water, L/kg 980
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
140
Resilience: Unit (Modulus of Resilience), kJ/m3 310
540
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
20
Strength to Weight: Bending, points 56
19
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 17
17

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0 to 0.35
Iron (Fe), % 0 to 0.0050
94.1 to 98.3
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.3
Nickel (Ni), % 0 to 0.0050
1.8 to 2.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.9
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0 to 0.5