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ASTM B522 Class I vs. ZC63A Magnesium

ASTM B522 class I belongs to the otherwise unclassified metals classification, while ZC63A magnesium belongs to the magnesium alloys. There are 22 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 ASTM B522 class I and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
48
Elongation at Break, % 1.1 to 29
3.3
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 34
19
Shear Strength, MPa 180 to 280
130
Tensile Strength: Ultimate (UTS), MPa 280 to 490
220
Tensile Strength: Yield (Proof), MPa 120 to 210
130

Thermal Properties

Latent Heat of Fusion, J/g 77
330
Melting Completion (Liquidus), °C 1030
550
Melting Onset (Solidus), °C 1030
470
Specific Heat Capacity, J/kg-K 160
950
Thermal Expansion, µm/m-K 15
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
32
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
140

Otherwise Unclassified Properties

Density, g/cm3 17
2.1

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
190
Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.9
58
Strength to Weight: Axial, points 4.4 to 7.8
29
Strength to Weight: Bending, points 5.5 to 8.0
38
Thermal Shock Resistance, points 13 to 24
12

Alloy Composition

Copper (Cu), % 0
2.4 to 3.0
Gold (Au), % 68 to 70
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0
0.25 to 0.75
Nickel (Ni), % 0
0 to 0.010
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 23.5 to 26.5
0
Zinc (Zn), % 0
5.5 to 6.5
Residuals, % 0
0 to 0.3