Niobium (Nb) | Korea Tungsten Co., Ltd.

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Niobium

Niobium is a refractory metal with a melting point of 2,468°C that combines excellent corrosion resistance with outstanding ductility. On the strength of a low density (8.57 g/cm³) and superconducting properties, it serves as a core material for the electronics, superconducting magnet and chemical equipment industries.

92.906

2477Melting point °C

8.57Density g/cm³

53Thermal conductivity W/m·K

7.3Thermal expansion µm/m·K

INTRODUCTION

Niobium

It combines high-temperature strength with corrosion resistance at a light density of 8.57 g/cm³. It is used in structural parts for aerospace and energy.

Pure Nb 99.9%

INTRODUCTION

Niobium

It combines high-temperature strength with corrosion resistance at a light density of 8.57 g/cm³. It is used in structural parts for aerospace and energy.

Pure Nb 99.9%

WHY NIOBIUM

A metal that is light and strong at high temperature

01

Among the lightest of the refractory metals

At 8.57 g/cm³ it is less than half of tungsten. That helps in aerospace structural parts where weight governs performance.

02

The basis of superconducting materials

It becomes superconducting at low temperature, which makes it a material for accelerators and MRI coils.

03

Corrosion resistance and high-temperature strength together

It goes into positions where both conditions apply at once, such as chemical plant and fusion structural materials.

KEY PROPERTIES

Key Properties

2477 °C

Melting point

In the refractory metal group

8.57

Density g/cm³

The lowest among the refractory metals

Thermal conductivity W/m·K

Moderate

7.3

Thermal expansion µm/m·K

At room temperature

Vacuum

Recommended atmosphere

Oxidizes in air at high temperature

1 grade

Supply grade

Pure Nb 99.9%

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

WHY NIOBIUM

A metal that is light and strong at high temperature

01

Among the lightest of the refractory metals

At 8.57 g/cm³ it is less than half of tungsten. That helps in aerospace structural parts where weight governs performance.

02

The basis of superconducting materials

It becomes superconducting at low temperature, which makes it a material for accelerators and MRI coils.

03

Corrosion resistance and high-temperature strength together

It goes into positions where both conditions apply at once, such as chemical plant and fusion structural materials.

KEY PROPERTIES

Key Properties

2477 °C

Melting point

In the refractory metal group

8.57

Density g/cm³

The lowest among the refractory metals

Thermal conductivity W/m·K

Moderate

7.3

Thermal expansion µm/m·K

At room temperature

Vacuum

Recommended atmosphere

Oxidizes in air at high temperature

1 grade

Supply grade

Pure Nb 99.9%

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

WHY NIOBIUM

A metal that is light and strong at high temperature

01

Among the lightest of the refractory metals

At 8.57 g/cm³ it is less than half of tungsten. That helps in aerospace structural parts where weight governs performance.

02

The basis of superconducting materials

It becomes superconducting at low temperature, which makes it a material for accelerators and MRI coils.

03

Corrosion resistance and high-temperature strength together

It goes into positions where both conditions apply at once, such as chemical plant and fusion structural materials.

KEY PROPERTIES

Key Properties

2477 °C

Melting point

In the refractory metal group

8.57

Density g/cm³

The lowest among the refractory metals

Thermal conductivity W/m·K

Moderate

7.3

Thermal expansion µm/m·K

At room temperature

Vacuum

Recommended atmosphere

Oxidizes in air at high temperature

1 grade

Supply grade

Pure Nb 99.9%

Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release; actual delivery specifications follow the per-lot test report.

Comparison

Refractory metals compared

Properties

Titanium (Ti)

Tantalum (Ta)

Niobium

Melting point (°C)

1,668

3,017

2,477 (high melting point)

Density (g/cm³)

4.51