AZ91D-T6 Magnesium
Magnesium Alloys
Property Overview
Density1.7g/cm³
Elastic Modulus46GPa
Tensile Strength210MPa
Yield Strength130MPa
Brinell Hardness80HB
Maximum Service Temperature130°C
Chemical Composition
NI
0 to 0.0020%
MN
0.15 to 0.5%
SI
0 to 0.1%
CU
0 to 0.030%
AL
8.3 to 9.7%
MG
88.7 to 91.2%
ZN
0.35 to 1.0%
FE
0 to 0.0050%
Mechanical
Compressive (Crushing) Strength
430 MPa
Elastic (Young's, Tensile) Modulus
46 GPa
Elongation at Break
2.3 %
Fatigue Strength
74 MPa
Impact Strength: V-Notched Charpy
2.7 J
Poisson's Ratio
0.29
Shear Modulus
18 GPa
Shear Strength
120 MPa
Tensile Strength: Ultimate (UTS)
210 MPa
Tensile Strength: Yield (Proof)
130 MPa
Hardness
Brinell Hardness
80
Rockwell F Hardness
75
Physical
Density
1.7 g/cm 3
Thermal
Latent Heat of Fusion
350 J/g
Maximum Temperature: Mechanical
130 °C
Melting Completion (Liquidus)
600 °C
Melting Onset (Solidus)
490 °C
Specific Heat Capacity
990 J/kg-K
Thermal Conductivity
78 W/m-K
Thermal Diffusivity
45 mm 2 /s
Thermal Expansion
27 µm/m-K
Thermal Shock Resistance
12 points
Electrical
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
58 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
4.2 MJ/m 3
Resilience: Unit (Modulus of Resilience)
170 kJ/m 3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
69 points
Strength to Weight: Axial
33 points
Strength to Weight: Bending
45 points
Environmental
Base Metal Price
12 % relative
Embodied Carbon
22 kg CO 2 /kg material
Embodied Energy
160 MJ/kg
Embodied Energy
160 MJ/kg 68 x 10 3 BTU/lb
Embodied Water
990 L/kg
Embodied Water
990 L/kg 120 gal/lb
Registered Designations & Aliases
AZ91D-T6 Magnesium
Standards
ASTM B94 ASTM B94: Standard Specification for Magnesium-Alloy Die Castings
ASTM B94 ASTM B94: Standard Specification for Magnesium-Alloy Die Castings Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993