Tantalum (Ta) | Korea Tungsten Co., Ltd.

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Tantalum

Tantalum is a refractory metal melting at 2,996°C, with corrosion resistance on a par with platinum in almost every acidic environment except hydrofluoric acid. Its high density (16.7 g/cm³) and excellent biocompatibility make it a key material for the electronics, chemical plant and medical industries.

180.948

3017Melting point °C

16.7Density g/cm³

57Thermal conductivity W/m·K

6.3Thermal expansion µm/m·K

INTRODUCTION

Tantalum

It barely dissolves in strong acids, and its surface oxide film is electrically stable. That is why electronic and semiconductor parts in corrosive environments use tantalum.

Pure Ta 99.95%

INTRODUCTION

Tantalum

It barely dissolves in strong acids, and its surface oxide film is electrically stable. That is why electronic and semiconductor parts in corrosive environments use tantalum.

Pure Ta 99.95%

WHY TANTALUM

A refractory metal that does not dissolve in acid

01

It barely reacts in strong acid environments

It does not corrode even in hydrochloric acid, nitric acid or aqua regia, which is why it is used in chemical plant and semiconductor wet process parts.

02

Its oxide film is electrically stable

The Ta₂O₅ film that forms on the surface is uniform, which makes it a dielectric for capacitors and electronic components.

03

It has a melting point of 3017°C as well

Where corrosion resistance and high-temperature performance are needed together, it is hard to replace with another metal.

KEY PROPERTIES

Key Properties

3017 °C

Melting point

After tungsten and rhenium

16.7

Density g/cm³

A high-density metal

Thermal conductivity W/m·K

Low among the refractory metals

6.3

Thermal expansion µm/m·K

At room temperature

Strong acids

Corrosion environment

Barely reacts with hydrochloric or nitric acid

1 grade

Supply grade

Pure Ta 99.95%

Dimensions are listed with reference to the general supply range for refractory metal semi-finished products. The range and tolerances we can actually deliver depend on your request, so send us an inquiry and we will confirm and reply.

WHY TANTALUM

A refractory metal that does not dissolve in acid

01

It barely reacts in strong acid environments

It does not corrode even in hydrochloric acid, nitric acid or aqua regia, which is why it is used in chemical plant and semiconductor wet process parts.

02

Its oxide film is electrically stable

The Ta₂O₅ film that forms on the surface is uniform, which makes it a dielectric for capacitors and electronic components.

03

It has a melting point of 3017°C as well

Where corrosion resistance and high-temperature performance are needed together, it is hard to replace with another metal.

KEY PROPERTIES

Key Properties

3017 °C

Melting point

After tungsten and rhenium

16.7

Density g/cm³

A high-density metal

Thermal conductivity W/m·K

Low among the refractory metals

6.3

Thermal expansion µm/m·K

At room temperature

Strong acids

Corrosion environment

Barely reacts with hydrochloric or nitric acid

1 grade

Supply grade

Pure Ta 99.95%

WHY TANTALUM

A refractory metal that does not dissolve in acid

01

It barely reacts in strong acid environments

It does not corrode even in hydrochloric acid, nitric acid or aqua regia, which is why it is used in chemical plant and semiconductor wet process parts.