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EN-MC65220 (MgRE2Ag1Zr) Magnesium

EN-MC65220 magnesium is a magnesium alloy. Cited properties are appropriate for the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. MC65220 is the EN numeric designation for this material. MgRE2Ag1Zr is the EN chemical designation. Additionally, the British Standard (BS) designation is MAG 13.

It has a very high base cost among magnesium alloys. In addition, it has a very low ductility and a moderately high density.

The graph bars on the material properties cards below compare EN-MC65220 magnesium to other magnesium alloys (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

80

Elastic (Young's, Tensile) Modulus

44 GPa 6.4 x 106 psi

Elongation at Break

2.2 %

Fatigue Strength

110 MPa 16 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

17 GPa 2.5 x 106 psi

Shear Strength

150 MPa 22 x 103 psi

Tensile Strength: Ultimate (UTS)

270 MPa 39 x 103 psi

Tensile Strength: Yield (Proof)

200 MPa 29 x 103 psi

Thermal Properties

Latent Heat of Fusion

340 J/g

Maximum Temperature: Mechanical

160 °C 320 °F

Melting Completion (Liquidus)

610 °C 1120 °F

Melting Onset (Solidus)

550 °C 1020 °F

Specific Heat Capacity

980 J/kg-K 0.23 BTU/lb-°F

Thermal Conductivity

110 W/m-K 65 BTU/h-ft-°F

Thermal Expansion

26 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

25 % IACS

Electrical Conductivity: Equal Weight (Specific)

120 % IACS

Otherwise Unclassified Properties

Base Metal Price

80 % relative

Density

1.9 g/cm3 120 lb/ft3

Embodied Carbon

27 kg CO2/kg material

Embodied Energy

210 MJ/kg 89 x 103 BTU/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

5.5 MJ/m3

Resilience: Unit (Modulus of Resilience)

450 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

62 points

Strength to Weight: Axial

40 points

Strength to Weight: Bending

49 points

Thermal Diffusivity

61 m2/s

Thermal Shock Resistance

17 points

Alloy Composition

Magnesium (Mg) 93.8 to 96.8
Silver (Ag) 1.3 to 1.7
Zirconium (Zr) 0.4 to 1.0
Zinc (Zn) 0 to 0.2
Copper (Cu) 0.050 to 0.1
Manganese (Mn) 0 to 0.15
Silicon (Si) 0 to 0.010
Iron (Fe) 0 to 0.010
Nickel (Ni) 0 to 0.0050
Unspecified Rare Earths 1.5 to 3.0
Residuals 0 to 0.010

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ISO 16220: Magnesium and magnesium alloys - Magnesium alloy ingots and castings

EN 1753: Magnesium and magnesium alloys. Magnesium alloy ingots and castings