ISO-WD21150 (MgAl3Zn1(A)) Magnesium
ISO-WD21150 magnesium is a magnesium alloy. WD21150 is the ISO numeric designation for this material. Additionally, the ASTM designation is AZ31A. And the UNS number is M11310.
The properties of ISO-WD21150 magnesium include four common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ISO-WD21150 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
45 GPa 6.5 x 106 psi
Elongation at Break
5.7 to 11 %
Poisson's Ratio
0.29
Shear Modulus
17 GPa 2.5 x 106 psi
Shear Strength
150 to 170 MPa 21 to 24 x 103 psi
Tensile Strength: Ultimate (UTS)
240 to 290 MPa 35 to 42 x 103 psi
Tensile Strength: Yield (Proof)
120 to 200 MPa 17 to 30 x 103 psi
Thermal Properties
Latent Heat of Fusion
350 J/g
Maximum Temperature: Mechanical
110 °C 230 °F
Melting Completion (Liquidus)
600 °C 1110 °F
Melting Onset (Solidus)
550 °C 1020 °F
Specific Heat Capacity
990 J/kg-K 0.24 BTU/lb-°F
Thermal Conductivity
100 W/m-K 58 BTU/h-ft-°F
Thermal Expansion
27 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
19 % IACS
Electrical Conductivity: Equal Weight (Specific)
100 % IACS
Otherwise Unclassified Properties
Base Metal Price
12 % relative
Density
1.7 g/cm3 100 lb/ft3
Embodied Carbon
23 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)
15 to 24 MJ/m3
Resilience: Unit (Modulus of Resilience)
160 to 460 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
70 points
Strength to Weight: Axial
40 to 48 points
Strength to Weight: Bending
52 to 58 points
Thermal Diffusivity
60 mm2/s
Thermal Shock Resistance
15 to 17 points
Alloy Composition
| Mg | 94 to 97 | |
| Al | 2.4 to 3.6 | |
| Zn | 0.5 to 1.5 | |
| Mn | 0.15 to 0.4 | |
| Si | 0 to 0.1 | |
| Cu | 0 to 0.050 | |
| Ni | 0 to 0.0050 | |
| Fe | 0 to 0.0050 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ISO 3116: Magnesium and magnesium alloys - Wrought magnesium alloys
ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings