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AZ63A-T6 Magnesium

AZ63A-T6 magnesium is AZ63A 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. The graph bars on the material properties cards below compare AZ63A-T6 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

Elastic (Young's, Tensile) Modulus

46 GPa 6.7 x 106 psi

Elongation at Break

3.8 %

Fatigue Strength

76 MPa 11 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

18 GPa 2.6 x 106 psi

Shear Strength

150 MPa 21 x 103 psi

Tensile Strength: Ultimate (UTS)

260 MPa 37 x 103 psi

Tensile Strength: Yield (Proof)

120 MPa 18 x 103 psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

120 °C 250 °F

Melting Completion (Liquidus)

610 °C 1130 °F

Melting Onset (Solidus)

450 °C 850 °F

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

980 J/kg-K 0.23 BTU/lb-°F

Thermal Conductivity

61 W/m-K 35 BTU/h-ft-°F

Thermal Expansion

26 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

12 % IACS

Electrical Conductivity: Equal Weight (Specific)

59 % IACS

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

1.8 g/cm3 110 lb/ft3

Embodied Carbon

22 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

970 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

8.1 MJ/m3

Resilience: Unit (Modulus of Resilience)

160 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

66 points

Strength to Weight: Axial

39 points

Strength to Weight: Bending

49 points

Thermal Diffusivity

34 mm2/s

Thermal Shock Resistance

15 points

Alloy Composition

Magnesium (Mg)Mg 88.6 to 92.1
Aluminum (Al)Al 5.3 to 6.7
Zinc (Zn)Zn 2.5 to 3.5
Manganese (Mn)Mn 0.15 to 0.35
Silicon (Si)Si 0 to 0.3
Copper (Cu)Cu 0 to 0.25
Nickel (Ni)Ni 0 to 0.010
Residualsres. 0 to 0.3

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

Followup Questions

Further Reading

Welding and Joining of Magnesium Alloys, Liming Liu (editor), 2010

ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings

Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014

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