Materials

Materials

Materials

Korea Tungsten specializes in machining refractory metals such as tungsten and molybdenum.

Here are the properties and applications of each material.

Korea Tungsten specializes in machining refractory metals such as tungsten and molybdenum. Here are the properties and applications of each material.

Korea Tungsten specializes in machining refractory metals such as tungsten and molybdenum.

Here are the properties and applications of each material.

10Elements handled
3422°CThe highest melting points
99.95%Standard purity for pure metals
MATERIALS

High-purity special metals, right through to the most extreme positions

Semiconductor chambers, aerospace structural members, high-temperature vacuum furnaces. For 40 years we have worked only with the refractory metals that go into those positions. We manage everything ourselves, from raw material sourcing to precision machining.

W
Mo
Ta
Nb
Re
Cr
Ti
Cu
Ag
MAIN MATERIALS

Six main materials

Melting point, density and thermal conductivity shown with the element symbol.

74
W
Tungsten
Tungsten · 183.84
The highest melting point and density. For places that need a high-temperature heating element and radiation shielding at once
3422°C19.3 g/cm³173 W/m·K
View details
42
Mo
Molybdenum
Molybdenum · 95.95
A high-melting-point metal with excellent thermal conductivity. The base material for heaters, electrodes, and sputtering targets
2615°C10.2 g/cm³138 W/m·K
View details
73
Ta
Tantalum
Tantalum · 180.948
Almost insoluble in acid and electrically stable. Electronic and semiconductor parts in corrosive environments
2996°C16.7 g/cm³57 W/m·K
View details
41
Nb
Niobium
Niobium · 92.906
Aerospace and energy structural parts that need high-temperature strength and corrosion resistance together
2468°C8.57 g/cm³53 W/m·K
View details
75
Re
Rhenium
Rhenium · 186.207
Keeps its ductility even at high temperature. W-Re thermocouples and electron-beam filaments
3186°C21.0 g/cm³48 W/m·K
View details
24
Cr
Chromium
Chromium · 51.996
Corrosion and wear resistance. Coatings, electrodes, and surface-treated parts
1907°C7.19 g/cm³93 W/m·K
View details
Combinations supplied as composites
W-Cu
W 50~90 % · 12.2~17.0 g/cm³
Thermal conductivity 180~340 W/m·K · for heat dissipation and electrodes
Mo-Cu
Mo 50~90 % · 9.5~10.0 g/cm³
Thermal conductivity 150~270 W/m·K · helium leak ≤5×10⁻⁹ Pa·m³/s
Tungsten heavy alloy
W 90~97 % · 16.9~18.9 g/cm³
ASTM B777 / MIL-T-21014Class 1~4 · tensile ≥648~758 MPa · magnetic, non-magnetic
W-Ag
70:30
Composite for switching contacts
W-Re
WRe3/25 · WRe5/26
Thermocouple wire Ø0.10~1.00 mm · compensating lead wire included
TZM
Ti-Zr-Mo · under 50 ppm oxygen
370 MPa tensile at 1200 °C · higher recrystallization temperature
MHC
Mo-Hf-C
Grade above TZM · 300 MPa tensile at 1400 °C
La-Mo
La 0.1~2.0 %
Improved high-temperature creep resistance
MAIN MATERIALS

Six main materials

Melting point, density and thermal conductivity shown with the element symbol.

74
W
Tungsten
Tungsten · 183.84
The highest melting point and density. For places that need a high-temperature heating element and radiation shielding at once
3422°C19.3 g/cm³173 W/m·K
View details
42
Mo
Molybdenum
Molybdenum · 95.95
A high-melting-point metal with excellent thermal conductivity. The base material for heaters, electrodes, and sputtering targets
2615°C10.2 g/cm³138 W/m·K
View details
73
Ta
Tantalum
Tantalum · 180.948
Almost insoluble in acid and electrically stable. Electronic and semiconductor parts in corrosive environments
2996°C16.7 g/cm³57 W/m·K
View details
41
Nb
Niobium
Niobium · 92.906
Aerospace and energy structural parts that need high-temperature strength and corrosion resistance together
2468°C8.57 g/cm³53 W/m·K
View details
75
Re
Rhenium
Rhenium · 186.207
Keeps its ductility even at high temperature. W-Re thermocouples and electron-beam filaments
3186°C21.0 g/cm³48 W/m·K
View details
24
Cr
Chromium
Chromium · 51.996
Corrosion and wear resistance. Coatings, electrodes, and surface-treated parts
1907°C7.19 g/cm³93 W/m·K
View details
Combinations supplied as composites
W-Cu
W 50~90 % · 12.2~17.0 g/cm³
Thermal conductivity 180~340 W/m·K · for heat dissipation and electrodes
Mo-Cu
Mo 50~90 % · 9.5~10.0 g/cm³
Thermal conductivity 150~270 W/m·K · helium leak ≤5×10⁻⁹ Pa·m³/s
Tungsten heavy alloy
W 90~97 % · 16.9~18.9 g/cm³
ASTM B777 / MIL-T-21014Class 1~4 · tensile ≥648~758 MPa · magnetic, non-magnetic
W-Ag
70:30
Composite for switching contacts
W-Re
WRe3/25 · WRe5/26
Thermocouple wire Ø0.10~1.00 mm · compensating lead wire included
TZM
Ti-Zr-Mo · under 50 ppm oxygen
370 MPa tensile at 1200 °C · higher recrystallization temperature
MHC
Mo-Hf-C
Grade above TZM · 300 MPa tensile at 1400 °C
La-Mo
La 0.1~2.0 %
Improved high-temperature creep resistance

Market segment

Target industries

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

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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