Magnesium WE43A-T6 Alloy (UNS M18430)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Magnesium is a strong, silvery-white, light weight metal that tarnishes slightly when exposed to air. It is easy to ignite when powdered or made into thin strips. Magnesium WE43A-T6 alloy has good corrosion resistance and high strength at room and elevated temperatures up to 290°C (550°F).

The following datasheet gives an overview of magnesium WE43A-T6 alloy.

Chemical Composition

The following table shows the chemical composition of magnesium WE43A-T6 alloy.

Element Content (%)
Magnesium, Mg 91.9
Yttrium, Y 4
Rare Earths 3.4
Zirconium, Zr 0.7

Physical Properties

The physical properties of magnesium WE43A-T6 alloy are given in the following table.

Properties Metric Imperial
Density 1.84 g/cm³ 0.0665 lb/in³
Melting point 550-640°C 1020-1180°F

Mechanical Properties

The mechanical properties of sand/permanent mold casting magnesium WE43A-T6 alloy are listed in the following table.

Properties Metric Imperial
Tensile strength 276 MPa 40000 psi
Yield strength 207 MPa 30000 psi
Shear modulus 17 GPa 2470 ksi
Elastic modulus 44.2 GPa 6410 ksi
Poisson's ratio 0.27 0.27
Elongation at break (in 50 mm) 2% 2%
Brinell hardness (500 kg load, 10 mm ball) 75-95 75-95

Thermal Properties

The following table outlines the thermal properties of magnesium WE43A-T6 alloy.

Properties Metric Imperial
Thermal expansion co-efficient (@ 0.000-100°C/32-212°F) 26 µm/m°C 14.4 µin/in°F
Thermal conductivity 51.3 W/mK 356 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to magnesium WE43A-T6 alloy include:

  • AMS 4427
  • ASTM B 80
  • EN 1753
  • EN MC95320

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