SAE AZ91E Magnesium Alloys

Material group: Nonferrous Alloys / Magnesium Alloys
Country / Standard: United States / SAE

Data updates

Latest Update: 2021-02
Total number of updates: 3
Update History
2019-04 2018-09

This material has 62 properties — only a subset is shown here.

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SAE AZ91E Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
8.1 – 9.3
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
Cu
VALUE
≤ 0.030
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Fe
VALUE
≤ 0.005
UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mg
VALUE
val1
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UNIT
%
CAS NUMBER
7439-95-4
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Other each
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
Zn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-66-6

SAE AMS 4446D: 2018 / Magnesium Alloy, Sand Castings 8.7Al - 0.70Zn - 0.26Mn (AZ91E-T6) Solution and Precipitation Heat Treated

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SAE AZ91E Physical Properties

Temperature

PROPERTY / VALUE
Compression Modulus
45 GPa
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Modulus of Elasticity
45 GPa
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Thermal Conductivity
val1
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W/(m∙°C)
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Electrical Resistivity
0.129 — 0.162 Ω∙mm²/m
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Density
val1
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kg/dm³
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Electrical Conductivity
val1
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S/m
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Heat Capacity
val1
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J/(kg∙°C)
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Poisson Coefficient
val1
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Shear Modulus
val1
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GPa
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This material has 62 properties — only a subset is shown here.

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SAE AZ91E Heat Treatments

  • Solution heat treatment
    Heated at 770-785°F (410-418°C). Incremental steps or a uniform heating rate shall be used to prevent eutectic melting which can irreversibly damage castings. A protective atmosphere containing sufficient sulfur dioxide, carbon dioxide, or satisfactory oxidation inhibitor shall be used when solution heat treating at or above 750°F (399°C). Recommended soaking time is 16-24 hours (soaking time starts when all temperature control sensing elements are within 10°F (6°C) of the set or offset temperature). Heavy section castings, t ≥ 25.4 mm, may require longer soaking time than indicated. Parts should be quenched after being soaked at the solution heat treating temperature. During the quench, the quenchant temperature shall not rise more than 25°F (14°C).
    Aging (precipitation heat treatment)
    Temper T6 - artificial aging from the solution heat treated (T4) temper. Heated for 4 hours at 425°F (218°C) or 16 hours at 335°F (168°C). Protective atmosphere is not required.
    Rework solution heat treatment
    Heated at 775°F (413°C). Recommended soaking time is half an hour.

SAE AZ91E Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 117.2 MPa
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Brinell Hardness (HB)
65 — 85
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Compression Yield Strength
val1
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MPa
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Elongation, A
≥ 0.75 %
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Yield Strength, Rp0.2
val1
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MPa
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  • 1Cross References
  • 9Composition
  • 10Mechanical Properties
  • 20Physical Properties
  • 1Heat Treatment
  • 10Metallography
  • -Machinability
  • 6Stress-Strain
  • -Formability
  • 3Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • 2Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers