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ZK40A Magnesium vs. R60901 Alloy

ZK40A magnesium belongs to the magnesium alloys classification, while R60901 alloy belongs to the otherwise unclassified metals. There are 20 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 ZK40A magnesium and the bottom bar is R60901 alloy.

ZK40A (ZK40A-T5, M16400) MagnesiumUNS R60901 Zirconium-Niobium Alloy
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
98
Elongation at Break, % 4.2
17 to 22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
37
Tensile Strength: Ultimate (UTS), MPa 280
500 to 580
Tensile Strength: Yield (Proof), MPa 260
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Specific Heat Capacity, J/kg-K 970
270
Thermal Conductivity, W/m-K 110
17
Thermal Expansion, µm/m-K 26
6.3

Otherwise Unclassified Properties

Density, g/cm3 1.8
6.6
Embodied Water, L/kg 950
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
88 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 740
640 to 760
Stiffness to Weight: Axial, points 14
8.3
Stiffness to Weight: Bending, points 65
23
Strength to Weight: Axial, points 43
21 to 25
Strength to Weight: Bending, points 53
21 to 24
Thermal Diffusivity, mm2/s 62
9.7
Thermal Shock Resistance, points 17
58 to 67

Alloy Composition

Magnesium (Mg), % 94.2 to 96.1
0
Niobium (Nb), % 0
2.4 to 2.8
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
96.8 to 97.5
Residuals, % 0
0 to 0.29