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AZ91A Magnesium vs. AWS E80C-Ni1

AZ91A magnesium belongs to the magnesium alloys classification, while AWS E80C-Ni1 belongs to the iron alloys. There are 27 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 AZ91A magnesium and the bottom bar is AWS E80C-Ni1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
27
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Tensile Strength: Ultimate (UTS), MPa 240
620
Tensile Strength: Yield (Proof), MPa 160
540

Thermal Properties

Latent Heat of Fusion, J/g 360
250
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 470
1420
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 73
40
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 52
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.6
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 22
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 990
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
770
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 38
22
Strength to Weight: Bending, points 49
21
Thermal Diffusivity, mm2/s 42
11
Thermal Shock Resistance, points 14
18

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.12
Copper (Cu), % 0 to 0.1
0 to 0.35
Iron (Fe), % 0
95.1 to 99.2
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.030
0.8 to 1.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.9
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 0.5