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ZK40A Magnesium vs. AWS E320

ZK40A magnesium belongs to the magnesium alloys classification, while AWS E320 belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, 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 ZK40A magnesium and the bottom bar is AWS E320.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.2
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 280
620

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 540
1360
Specific Heat Capacity, J/kg-K 970
460
Thermal Expansion, µm/m-K 26
14

Otherwise Unclassified Properties

Base Metal Price, % relative 13
38
Density, g/cm3 1.8
8.2
Embodied Carbon, kg CO2/kg material 24
6.5
Embodied Energy, MJ/kg 160
91
Embodied Water, L/kg 950
220

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 43
21
Strength to Weight: Bending, points 53
20
Thermal Shock Resistance, points 17
16

Alloy Composition

Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 0
31.8 to 43.5
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
32 to 36
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0