EN-MC95320 (MgY4RE3Zr) Magnesium
EN-MC95320 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. MC95320 is the EN numeric designation for this material. MgY4RE3Zr is the EN chemical designation.
It has a fairly high base cost among magnesium alloys. In addition, it has a very low ductility and a very high embodied energy.
The graph bars on the material properties cards below compare EN-MC95320 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
83
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
140 MPa 20 x 103 psi
Tensile Strength: Ultimate (UTS)
250 MPa 36 x 103 psi
Tensile Strength: Yield (Proof)
190 MPa 28 x 103 psi
Thermal Properties
Latent Heat of Fusion
330 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
640 °C 1180 °F
Melting Onset (Solidus)
530 °C 990 °F
Specific Heat Capacity
960 J/kg-K 0.23 BTU/lb-°F
Thermal Conductivity
52 W/m-K 30 BTU/h-ft-°F
Thermal Expansion
25 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
53 % IACS
Otherwise Unclassified Properties
Base Metal Price
34 % relative
Density
1.9 g/cm3 120 lb/ft3
Embodied Carbon
28 kg CO2/kg material
Embodied Energy
250 MJ/kg 110 x 103 BTU/lb
Embodied Water
910 L/kg 110 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
5.1 MJ/m3
Resilience: Unit (Modulus of Resilience)
420 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
61 points
Strength to Weight: Axial
36 points
Strength to Weight: Bending
45 points
Thermal Diffusivity
28 mm2/s
Thermal Shock Resistance
16 points
Alloy Composition
| Mg | 89.7 to 93.5 | |
| Y | 3.7 to 4.3 | |
| Zr | 0.4 to 1.0 | |
| Zn | 0 to 0.2 | |
| Li | 0 to 0.2 | |
| Mn | 0 to 0.15 | |
| Cu | 0 to 0.030 | |
| Si | 0 to 0.010 | |
| Fe | 0 to 0.010 | |
| Ni | 0 to 0.0050 | |
| rare e. | 2.4 to 4.4 | |
| res. | 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