Tungsten - Mechanical Properties And Material Applications

Topics Covered

Introduction
Physical Properties
Mechanical Properties
Fabrication and Heat Treatment
     Forming
Applications

Introduction

Tungsten has high electrical and thermal conductivity, and low vapor pressure at high temperature. It has high meting point compared to all other metallic materials. It is also considered as a good element for high vacuum technology, furnace construction, glass seals, and dimensional stability. It has an ability to absorb radioactive radiation because it has high density. The following datasheet gives an overview of tungsten.

Physical Properties

The physical properties of tungsten are displayed in the following table.

Properties Metric Imperial
Density 19.27 g/cm³ 0.70 lb/in³
Melting point 3410°C 6170°F

Mechanical Properties

The mechanical properties of tungsten are outlined in the following table.

Properties Metric Imperial
Tensile strength 1725 MPa 250 ksi
Elastic modulus 400 GPa 58000 ksi
Hardness 300 300

Fabrication and Heat Treatment

Forming

Before forming, tungsten should be preheated at 675°C (1247°F).

Applications

Tungsten is used in different kinds of furnace and lighting applications due to its high melting temperature. The thermal expansion coefficient value of tungsten is almost same as that of silicon, thus using the tungsten in brazed mounts for silicon diode chips.

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