AZ92A-T5 Magnesium
AZ92A-T5 magnesium is AZ92A magnesium in the T5 temper. To achieve this temper, the metal is artificially aged until it meets standard mechanical property requirements. The graph bars on the material properties cards below compare AZ92A-T5 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
47 GPa 6.8 x 106 psi
Elongation at Break
2.8 %
Fatigue Strength
76 MPa 11 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
18 GPa 2.6 x 106 psi
Shear Strength
97 MPa 14 x 103 psi
Tensile Strength: Ultimate (UTS)
170 MPa 25 x 103 psi
Tensile Strength: Yield (Proof)
92 MPa 13 x 103 psi
Thermal Properties
Latent Heat of Fusion
350 J/g
Maximum Temperature: Mechanical
130 °C 270 °F
Melting Completion (Liquidus)
590 °C 1100 °F
Melting Onset (Solidus)
440 °C 830 °F
Solidification (Pattern Maker's) Shrinkage
1.3 %
Specific Heat Capacity
980 J/kg-K 0.23 BTU/lb-°F
Thermal Conductivity
58 W/m-K 34 BTU/h-ft-°F
Thermal Expansion
26 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
56 % 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
160 MJ/kg 67 x 103 BTU/lb
Embodied Water
980 L/kg 120 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
4.0 MJ/m3
Resilience: Unit (Modulus of Resilience)
91 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
67 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
38 points
Thermal Diffusivity
33 mm2/s
Thermal Shock Resistance
10 points
Alloy Composition
| Mg | 86.7 to 90 | |
| Al | 8.3 to 9.7 | |
| Zn | 1.6 to 2.4 | |
| Mn | 0.1 to 0.35 | |
| Si | 0 to 0.3 | |
| Cu | 0 to 0.25 | |
| Ni | 0 to 0.010 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B199: Standard Specification for Magnesium-Alloy Permanent Mold Castings
ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings
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