Magnesium AM50A Cast Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications

Introduction

Magnesium alloys are popular in the automobile and aerospace sectors due to their lightweight property. Magnesium AM50A cast alloy has excellent ductility, superior energy absorbing properties, and good strength and castability.

The following sections will discuss in detail about magnesium AM50A cast alloy.

Chemical Composition

The chemical composition of magnesium AM50A cast alloy is outlined in the following table.

Element Content (%)
Aluminum, Al 4.4-5.4
Manganese, Mn 0.26-0.6
Zinc, Zn 0.22
Silicon, Si 0.1
Copper, Cu 0.01
Nickel, Ni 0.002
Iron, Fe 0.004
Others, each max 0.02
Magnesium, Mg Remainder

Physical Properties

The physical properties of magnesium AM50A cast alloy are tabulated below.

Properties Metric Imperial
Density 1.77 g/cm3 0.063 lb/in3

Mechanical Properties

The following table shows mechanical properties of magnesium AM50A cast alloy.

Properties Metric Imperial
Tensile strength 210-230 MPa 30.4-33 ksi
Yield strength 125 MPa 18.12 ksi
Elastic modulus 45 GPa 6526 ksi
Elongation 10-15% 10-15%
Hardness 60 60

Thermal Properties

The thermal properties of magnesium AM50A cast alloy are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient 26 µm/m°C 14.4 µin/in°F
Thermal conductivity 65 W/mK 450 BTU in/hr.ft².°F

Applications

Magnesium AM50A cast alloy is chiefly used in several components in the automobile sector. The following are some of them:

  • Brackets
  • Seat frames
  • Steering wheels
  • Instrument panels.

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