Magnesium AM50A-F (UNS M10500) Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications

Introduction

Magnesium AM50A-F exhibits good energy absorbing capabilities and ductility.

This data sheet will elaborate on the properties and applications of magnesium AM50A-F alloy.

Chemical Composition

The following table shows the chemical composition of magnesium AM50A-F alloy.

Element Content (%)
Magnesium, Mg 94.8
Aluminum, Al 4.4-5.4
Manganese, Mn 0.26-0.60
Zinc, Zn ≤0.22
Silicon, Si ≤0.10
Other, each ≤0.020
Copper, Cu ≤0.010
Iron, Fe ≤0.0040
Nickel, Ni ≤0.0020

Physical Properties

The physical properties of magnesium AM50A-F alloy are given in the following table.

Properties Metric Imperial
Density 1.77 g/cc 0.0639 lb/in³
Melting Point(Incipient Melting) ≥435°C ≥815°F

Mechanical Properties

The mechanical properties of magnesium AM50A-F alloy are provided in the table below.

Properties Metric Imperial
Tensile strength 228 MPa 33000 psi
Yield strength 124 MPa 18000 psi
Compressive yield strength 110 MPa 16000 psi
Shear modulus (estimated from similar Mg alloys) 17 GPa 2470 ksi
Elastic modulus 45 GPa 6530 ksi
Poisson's ratio 0.35 0.35
Elongation at break (in 50 mm) 15% 15%
Hardness, Brinell (500 kg load, 10 mm ball) 60 60

Thermal Properties

The following table outlines the thermal properties of magnesium AM50A-F alloy.

Properties Metric Imperial
Thermal expansion co-efficient (@Temperature 20-100°C/68-212°F) 26 µm/m°C 14.4 µin/in°F
Thermal conductivity 65 W/mK 451 BTU in/hr.ft².°F

Other Designations

Other designations that are used to denote magnesium AM50A-F alloy are:

  • ASTM B 94
  • European EN 1753 MC21220(Ingot UNS M10501)

Applications

Magnesium AM50A-F alloy is typically used as a die casting alloy in as-cast (F) temper. Automotive wheels are mostly made of this alloy.

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