SAE EQ21A Magnesium Alloys

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

Data updates

Latest Update: 2025-09
Total number of updates: 2
Update History
2018-09

This material has 11 properties — only a subset is shown here.

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SAE EQ21A Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
45 GPa
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Density
≥ 1.8 kg/dm³
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This material has 11 properties — only a subset is shown here.

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SAE EQ21A Heat Treatments

  • Solution heat treatment
    Heated at 960-980°F (516-527°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 4-8 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.
    Quenched in water (or other suitable media) held at 140-196°F (60-91°C). 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 8-16 hours at 400°F (204°C). Protective atmosphere is not required.
    Rework solution heat treatment
    Heated at 940°F (504°C). Recommended soaking time is 1-2 hours.

SAE EQ21A Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 234 MPa
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Elongation, A
≥ 2 %
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Yield Strength, Rp0.2
≥ 172 MPa
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  • -Cross References
  • -Composition
  • 3Mechanical Properties
  • 2Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • 1Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • 4Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers