Magnesium AZ80A-T6 (UNS M11800) Forged Alloy

Jul 31 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Magnesium is a silvery white metal, abundantly available on the Earth’s crust. It is easily machinable and exhibits good ductility. It is commonly alloyed with non-ferrous metals like aluminum, copper, nickel etc.

Magnesium AZ80A-T6 is a forged alloy, similar in features to AZ61A-F but is superior to it in strength. This datasheet will elaborate on the properties of magnesium AZ80A-T6 alloy.

Chemical Composition

The following table provides details on the composition of magnesium AZ80A-T6 forged alloy.

Element Content (%)
Magnesium, Mg 91
Aluminum, Al 7.8-9.2
Zinc, Zn 0.2-0.8
Manganese, Mn ≥0.12
Silicon, Si ≤0.10
Copper, Cu ≤0.050
Nickel, Ni ≤0.0050
Iron, Fe ≤0.0050

Physical Properties

The physical properties of magnesium AZ80A-T6 forged alloy are given in the following table.

Properties Metric Imperial
Density 1.80 g/cc 0.0650 lb/in³
Melting Point (Incipient melting) ≥427°C ≥801°F

Mechanical Properties

The mechanical properties of magnesium AZ80A-T6 forged alloy are listed in the table below.

Properties Metric Imperial
Tensile Strength 340 Mpa 49300 psi
Yield strength (at strain 0.200%) 250 Mpa 36300 psi
Compressive Yield Strength (at 0.2% offset) 185 MPa 26800 psi
Elongation at break (in 50 mm) 5% 5%
Elastic Modulus (in tension) 45 GPa 6530 ksi
Poisson's ratio 0.35 0.35
Shear Modulus 17 GPa 2470 ksi
Machinability (relative rating, 100=Best) 100 100
Hardness, Brinell (500 kg load, 10 mm ball) 72 72
Hardness, Knoop (estimated from Brinell) 95 95
Hardness, Vickers (estimated from Brinell) 82 82

Thermal Properties

The following table provides the thermal properties of magnesium AZ80A-T6 forged alloy.

Properties Metric Imperial
Thermal expansion co-efficient (at 0.000-100°C/32-212°F) 26 µm/m°C 14.4 µin/in°F
Thermal Conductivity 76 W/mK 527 BTU in/hr.ft².°F

Other Designations

Some of the other designations that are used to denote magnesium AZ80A-T6 forged alloy are:-

  • UNS M11800

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