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AWS E330H vs. AZ31C Magnesium

AWS E330H belongs to the iron alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 E330H and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 11
12
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
17
Tensile Strength: Ultimate (UTS), MPa 690
260

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Melting Completion (Liquidus), °C 1400
600
Melting Onset (Solidus), °C 1350
550
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
19
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
98

Otherwise Unclassified Properties

Base Metal Price, % relative 30
12
Density, g/cm3 8.1
1.7
Embodied Carbon, kg CO2/kg material 5.4
23
Embodied Energy, MJ/kg 76
160
Embodied Water, L/kg 180
970

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
70
Strength to Weight: Axial, points 24
42
Strength to Weight: Bending, points 22
53
Thermal Diffusivity, mm2/s 3.2
74
Thermal Shock Resistance, points 19
16

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0.35 to 0.45
0
Chromium (Cr), % 14 to 17
0
Copper (Cu), % 0 to 0.75
0 to 0.1
Iron (Fe), % 40.5 to 51.7
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 1.0 to 2.5
0.15 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 33 to 37
0 to 0.030
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3