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ASTM B522 Class I vs. EN-MC65120 Magnesium

ASTM B522 class I belongs to the otherwise unclassified metals classification, while EN-MC65120 magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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 ASTM B522 class I and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
45
Elongation at Break, % 1.1 to 29
3.1
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 34
17
Shear Strength, MPa 180 to 280
92
Tensile Strength: Ultimate (UTS), MPa 280 to 490
160
Tensile Strength: Yield (Proof), MPa 120 to 210
110

Thermal Properties

Latent Heat of Fusion, J/g 77
330
Melting Completion (Liquidus), °C 1030
590
Melting Onset (Solidus), °C 1030
520
Specific Heat Capacity, J/kg-K 160
970
Thermal Expansion, µm/m-K 15
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
25
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
120

Otherwise Unclassified Properties

Density, g/cm3 17
1.9

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
4.4
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
140
Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.9
62
Strength to Weight: Axial, points 4.4 to 7.8
23
Strength to Weight: Bending, points 5.5 to 8.0
34
Thermal Shock Resistance, points 13 to 24
9.8

Alloy Composition

Copper (Cu), % 0
0 to 0.030
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
0 to 0.010
Magnesium (Mg), % 0
91.8 to 95.1
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0
0 to 0.0050
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 0.010
Silver (Ag), % 23.5 to 26.5
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010