ZK61A (M16610) Magnesium

ZK61A magnesium is an alloy of magnesium. ZK61A is the ASTM designation for this material. M16610 is the UNS number.

It has two common variants, each represented as a separate material. The Material Properties section below shows ranges encompassing all variants. For more specific values, follow the links in the Variant Materials section.

Material Properties

Base Metal Price22 % rel

Density2.1 g/cm3 (130 lb/ft3)

Elastic (Young's, Tensile) Modulus49 GPa (7.1 x 106 psi)

Elongation at Break5.8 to 7.2 %

Melting Onset (Solidus)530 °C (990 °F)

Modulus of Resilience (Unit Resilience)330 to 410 kJ/m3

Poisson's Ratio0.29

Shear Strength170 to 180 MPa (25 to 26 x 103 psi)

Solidification (Pattern Maker's) Shrinkage1.3 %

Specific Heat Capacity960 J/kg-K

Strength to Weight Ratio140 to 150 kN-m/kg

Tensile Strength: Ultimate (UTS)290 to 310 MPa (42 to 45 x 103 psi)

Tensile Strength: Yield (Proof)180 to 200 MPa (26 to 29 x 103 psi)

Thermal Expansion25 µm/m-K

Unit Rupture Work (Ultimate Resilience)15 MJ/m3

The length of each bar compares the given value to the highest value in the database.

Alloy Composition

Magnesium (Mg)92.1 to 93.9 %

Zinc (Zn)5.5 to 6.5 %

Zirconium (Zr)0.6 to 1.0 %

Residuals0 to 0.3 %

Copper (Cu)0 to 0.1 %

Nickel (Ni)0 to 0.010 %

Further Reading

ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings

ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993

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