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AWS E312 vs. ZK61A Magnesium

AWS E312 belongs to the iron alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 E312 and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 25
5.8 to 7.1
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
18
Tensile Strength: Ultimate (UTS), MPa 740
290 to 310

Thermal Properties

Latent Heat of Fusion, J/g 310
330
Melting Completion (Liquidus), °C 1410
640
Melting Onset (Solidus), °C 1360
530
Specific Heat Capacity, J/kg-K 480
960
Thermal Expansion, µm/m-K 15
27

Otherwise Unclassified Properties

Base Metal Price, % relative 20
13
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 3.6
23
Embodied Energy, MJ/kg 52
160
Embodied Water, L/kg 200
940

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 27
42 to 45
Strength to Weight: Bending, points 24
50 to 53
Thermal Shock Resistance, points 18
17 to 18

Alloy Composition

Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 28 to 32
0
Copper (Cu), % 0 to 0.75
0 to 0.1
Iron (Fe), % 52.3 to 63.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0.5 to 2.5
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 8.0 to 10.5
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3