Thorium products

On the strength of its oxide's high melting point and electron emission characteristics, Korea Tungsten's thorium is used in welding electrodes, high-temperature refractories and optics. As a radioactive material it is handled under license in accordance with the applicable regulations.

On the strength of its oxide's high melting point and electron emission characteristics, Korea Tungsten's thorium is used in welding electrodes, high-temperature refractories and optics. As a radioactive material it is handled under license in accordance with the applicable regulations.

On the strength of its oxide's high melting point and electron emission characteristics, Korea Tungsten's thorium is used in welding electrodes, high-temperature refractories and optics. As a radioactive material it is handled under license in accordance with the applicable regulations.

MELTING POINT1,750 ℃Heat resistance in oxide form
ThO₂2–3 % contentWT20 · WT30 electrodes
FORMS3Electrodes · powder · crucibles
HANDLINGWithin licenseHandled in accordance with the applicable regulations
KEY FEATURES

Why thorium

How the properties of the material become advantages in the finished part.

Arc stability

Added to a tungsten electrode the arc strikes easily and holds steady.

High refractoriness

Thorium oxide has a high melting point, which makes it a high-temperature crucible material.

Electron emission

It emits electrons readily, extending welding electrode life.

Handled under regulation

As a radioactive material it is supplied only within the scope of the license.

PRODUCT VARIANTS

Product Shapes

Thoriated tungsten electrodes

Thoriated tungsten electrodes

Electrodes containing 2–3% ThO₂, used in arc welding.

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※ We also machine dimensions outside the standard range. Send us a drawing and we will reply on whether it is possible.

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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