AZ80A (3.5812, M11800) Magnesium

AZ80A magnesium is an alloy of magnesium. AZ80A is the ASTM designation for this material. M11800 is the UNS number.

It has three common variants, each represented as a separate material. The Material Properties section below shows ranges encompassing all variants. For more specific values, follow the links in the Variant Materials section.

Material Properties

Base Metal Price20 % rel

Density1.9 g/cm3 (120 lb/ft3)

Elastic (Young's, Tensile) Modulus47 GPa (6.8 x 106 psi)

Electrical Conductivity11 % IACS

Electrical Resistivity Order of Magnitude-7 10x Ω-m

Elongation at Break4.0 to 8.5 %

Fatigue Strength (Endurance Limit)150 MPa (22 x 103 psi)

Modulus of Resilience (Unit Resilience)470 to 560 kJ/m3

Poisson's Ratio0.29

Shear Strength160 to 170 MPa (23 to 25 x 103 psi)

Specific Heat Capacity1050 J/kg-K

Strength to Weight Ratio170 kN-m/kg

Tensile Strength: Ultimate (UTS)320 to 330 MPa (46 to 48 x 103 psi)

Tensile Strength: Yield (Proof)210 to 230 MPa (30 to 33 x 103 psi)

Thermal Conductivity39 W/m-K

Thermal Diffusivity20 m2/s

Thermal Expansion26 µm/m-K

Unit Rupture Work (Ultimate Resilience)11 to 12 MJ/m3

The length of each bar compares the given value to the highest value in the database.

Alloy Composition

Magnesium (Mg)89 to 91.9 %

Aluminum (Al)7.8 to 9.2 %

Zinc (Zn)0.2 to 0.8 %

Manganese (Mn)0.12 to 0.5 %

Residuals0 to 0.3 %

Silicon (Si)0 to 0.1 %

Copper (Cu)0 to 0.050 %

Iron (Fe)0 to 0.0050 %

Nickel (Ni)0 to 0.0050 %

Further Reading

ASTM B107: Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire

ASTM B91: Standard Specification for Magnesium-Alloy Forgings

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993

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