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ISO-WD32250 Magnesium vs. AWS ERTi-7

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while AWS ERTi-7 belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 ISO-WD32250 magnesium and the bottom bar is AWS ERTi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 4.5 to 8.6
20
Fatigue Strength, MPa 170 to 210
190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 310 to 330
340
Tensile Strength: Yield (Proof), MPa 240 to 290
280

Thermal Properties

Latent Heat of Fusion, J/g 340
420
Maximum Temperature: Mechanical, °C 120
320
Melting Completion (Liquidus), °C 600
1670
Melting Onset (Solidus), °C 550
1620
Specific Heat Capacity, J/kg-K 980
540
Thermal Conductivity, W/m-K 130
21
Thermal Expansion, µm/m-K 26
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
7.3

Otherwise Unclassified Properties

Density, g/cm3 1.8
4.5
Embodied Carbon, kg CO2/kg material 24
47
Embodied Energy, MJ/kg 160
800
Embodied Water, L/kg 950
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
64
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 67
35
Strength to Weight: Axial, points 49 to 51
21
Strength to Weight: Bending, points 58 to 60
24
Thermal Diffusivity, mm2/s 72
8.8
Thermal Shock Resistance, points 19 to 20
26

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 0
0 to 0.12
Magnesium (Mg), % 94.9 to 97.1
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
Titanium (Ti), % 0
99.417 to 99.8
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0