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EN-MC21120-T6 Magnesium

EN-MC21120-T6 is EN-MC21120 magnesium in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. It has the lowest ductility compared to the other variants of EN-MC21120 magnesium.

The graph bars on the material properties cards below compare EN-MC21120-T6 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

75

Elastic (Young's, Tensile) Modulus

46 GPa 6.7 x 106 psi

Elongation at Break

2.2 %

Fatigue Strength

96 MPa 14 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

18 GPa 2.6 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)

170 MPa 25 x 103 psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

130 °C 270 °F

Melting Completion (Liquidus)

600 °C 1120 °F

Melting Onset (Solidus)

490 °C 910 °F

Specific Heat Capacity

990 J/kg-K 0.24 BTU/lb-°F

Thermal Conductivity

76 W/m-K 44 BTU/h-ft-°F

Thermal Expansion

26 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

11 % IACS

Electrical Conductivity: Equal Weight (Specific)

59 % IACS

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

1.7 g/cm3 110 lb/ft3

Embodied Carbon

22 kg CO2/kg material

Embodied Energy

160 MJ/kg 68 x 103 BTU/lb

Embodied Water

990 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

5.3 MJ/m3

Resilience: Unit (Modulus of Resilience)

320 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

69 points

Strength to Weight: Axial

43 points

Strength to Weight: Bending

53 points

Thermal Diffusivity

44 mm2/s

Thermal Shock Resistance

16 points

Alloy Composition

Magnesium (Mg)Mg 88.6 to 91.3
Aluminum (Al)Al 8.3 to 9.7
Zinc (Zn)Zn 0.35 to 1.0
Manganese (Mn)Mn 0.1 to 0.5
Silicon (Si)Si 0 to 0.2
Copper (Cu)Cu 0 to 0.030
Iron (Fe)Fe 0 to 0.0050
Nickel (Ni)Ni 0 to 0.0020
Residualsres. 0 to 0.010

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

Followup Questions

Further Reading

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

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