Tungsten

Tungsten

Tungsten

With a melting point of 3,422°C, tungsten withstands more heat than any other metal. Its high density (19.3 g/cm³) and retained strength at high temperature make it a key material for the semiconductor, aerospace, energy and medical industries.

With a melting point of 3,422°C, tungsten withstands more heat than any other metal. Its high density (19.3 g/cm³) and retained strength at high temperature make it a key material for the semiconductor, aerospace, energy and medical industries.

With a melting point of 3,422°C, tungsten withstands more heat than any other metal. Its high density (19.3 g/cm³) and retained strength at high temperature make it a key material for the semiconductor, aerospace, energy and medical industries.

74
W
183.84
3422Melting point °C
19.3Density g/cm³
173Thermal conductivity W/m·K
4.5Thermal expansion µm/m·K
INTRODUCTION
W

Tungsten

It has the highest melting point of any practical metal, and a density 1.7 times that of lead. Where a vacuum furnace heating element above 2000°C and radiation shielding are needed at once, no metal replaces tungsten.

Pure W 99.95%WCu(70:30)WCu(55:45)WAg(70:30)WNiFeWNiCu
Tungsten rod
INTRODUCTION
W

Tungsten

It has the highest melting point of any practical metal, and a density 1.7 times that of lead. Where a vacuum furnace heating element above 2000°C and radiation shielding are needed at once, no metal replaces tungsten.

Pure W 99.95%WCu(70:30)WCu(55:45)WAg(70:30)WNiFeWNiCu
Tungsten rod
WHY TUNGSTEN

The metal that remains in the hottest positions

01
3422°C, the highest melting point of any practical metal

It holds its shape in vacuum furnace heating elements and high-temperature jigs above 2000°C. In that temperature range tungsten is effectively the only option.

02
1.7 times the density of lead

At 19.3 g/cm³ it blocks more radiation at the same thickness. It is used in shielding parts for medical and inspection equipment.

03
Among the lowest thermal expansion of any metal

Dimensions do not wander through repeated heating and cooling, which makes tolerance control easy on precision parts.

KEY PROPERTIES

Key Properties

3,422 °C
Melting point
The highest of any practical metal
19.3
Density g/cm³
About 1.7 times that of lead
173
Thermal conductivity W/m·K
Among the highest of the refractory metals
4.6
Thermal expansion µm/m·K
Among the lowest of any metal
Vacuum
Recommended atmosphere
Oxidizes above 600°C in air — a protective atmosphere is required
6 grades
Supply grades
W1 · WL · WAl · W-Re · W-Cu · tungsten heavy alloy

The dimensions listed are the range we can supply. Final feasibility depends on the combination of grade, quantity and tolerance and on the material condition you request, so send us a drawing and we will confirm and reply.

WHY TUNGSTEN

The metal that remains in the hottest positions

01
3422°C, the highest melting point of any practical metal

It holds its shape in vacuum furnace heating elements and high-temperature jigs above 2000°C. In that temperature range tungsten is effectively the only option.

02
1.7 times the density of lead

At 19.3 g/cm³ it blocks more radiation at the same thickness. It is used in shielding parts for medical and inspection equipment.

03
Among the lowest thermal expansion of any metal

Dimensions do not wander through repeated heating and cooling, which makes tolerance control easy on precision parts.

KEY PROPERTIES

Key Properties

3,422 °C
Melting point
The highest of any practical metal
19.3
Density g/cm³
About 1.7 times that of lead
173
Thermal conductivity W/m·K
Among the highest of the refractory metals
4.6
Thermal expansion µm/m·K
Among the lowest of any metal
Vacuum
Recommended atmosphere
Oxidizes above 600°C in air — a protective atmosphere is required
6 grades
Supply grades
W1 · WL · WAl · W-Re · W-Cu · tungsten heavy alloy

The dimensions listed are the range we can supply. Final feasibility depends on the combination of grade, quantity and tolerance and on the material condition you request, so send us a drawing and we will confirm and reply.

WHY TUNGSTEN

The metal that remains in the hottest positions

01
3422°C, the highest melting point of any practical metal

It holds its shape in vacuum furnace heating elements and high-temperature jigs above 2000°C. In that temperature range tungsten is effectively the only option.

02
1.7 times the density of lead

At 19.3 g/cm³ it blocks more radiation at the same thickness. It is used in shielding parts for medical and inspection equipment.

03
Among the lowest thermal expansion of any metal

Dimensions do not wander through repeated heating and cooling, which makes tolerance control easy on precision parts.

KEY PROPERTIES

Key Properties

3,422 °C
Melting point
The highest of any practical metal
19.3
Density g/cm³
About 1.7 times that of lead
173
Thermal conductivity W/m·K
Among the highest of the refractory metals
4.6
Thermal expansion µm/m·K
Among the lowest of any metal
Vacuum
Recommended atmosphere
Oxidizes above 600°C in air — a protective atmosphere is required
6 grades
Supply grades
W1 · WL · WAl · W-Re · W-Cu · tungsten heavy alloy

The dimensions listed are the range we can supply. Final feasibility depends on the combination of grade, quantity and tolerance and on the material condition you request, so send us a drawing and we will confirm and reply.

Comparison

Metals compared, side by side

Properties

Iron

Iron

Lead

Lead

Tungsten

Tungsten

Melting point (°C)

Melting point (°C)

1,538

1,538

327

327

3,422 (highest)

3,422 (highest)

Density (g/cm³)

Density (g/cm³)

7.87

7.87

11.34

11.34

19.3 (on a par with gold)

19.3 (on a par with gold)

Mohs hardness

Mohs hardness

4.0 – 5.0

4.0 – 5.0

1.5

1.5

7.5–8.0 (very high)

7.5–8.0 (very high)

Key features

Key features

The most common metal

The most common metal

Heavy, but toxic

Heavy, but toxic

The strongest, heaviest king of industry

The strongest, heaviest king of industry

FORMS OF SUPPLY

Supply Forms

Form
Specification
Main applications
Plate · Sheet
t 0.1 – 40 mm
Width 10 – 800 mm
Length 10 – 2000 mm
Rolling · turning · grinding · mirror finish, Ra 0.8 µm or below
Rod · Bar
Ø 1.0 – 80 mm
Length 10 – 3000 mm
Forging · turning · grinding, Ra 0.8 µm or below
Crucible · Boat · Tube
Ø 1.0 – 500 mm
t 0.1 – 30 mm
Mirror-finish boats Ra 0.4 µm or below
Bolts · Heating elements · Custom machined parts
M1.4 – M20
To drawing
Wire EDM · laser machining · welded assemblies
FORMS OF SUPPLY

Supply Forms

Form
Specification
Main applications
Plate · Sheet
t 0.1 – 40 mm
Width 10 – 800 mm
Length 10 – 2000 mm
Rolling · turning · grinding · mirror finish, Ra 0.8 µm or below
Rod · Bar
Ø 1.0 – 80 mm
Length 10 – 3000 mm
Forging · turning · grinding, Ra 0.8 µm or below
Crucible · Boat · Tube
Ø 1.0 – 500 mm
t 0.1 – 30 mm
Mirror-finish boats Ra 0.4 µm or below
Bolts · Heating elements · Custom machined parts
M1.4 – M20
To drawing
Wire EDM · laser machining · welded assemblies
CNC precision machining floor

Advanced material supply and machining,
a global material leader

From raw material to finished part, the best solution seen from your side.

Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)

CNC precision machining floor

Advanced material supply and machining,
a global material leader

From raw material to finished part, the best solution seen from your side.

Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)

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KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

Privacy Policy

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KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

Privacy Policy

Terms of Use

Cookie settings

KOREA TUNGSTEN CO.,LTD

KOREA TUNGSTEN CO.,LTD

Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.

INNOMT LLC

INNOMT CO.,LTD

Korea Tungsten's official overseas division

© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri)   +82-31-975-1717

© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239

Privacy Policy

Terms of Use

Cookie settings