KOREA TUNGSTEN CO.,LTD

Ribbon

Tungsten and molybdenum boats and crucibles for vacuum deposition and high-temperature melting. They are used where the vessel must not react with molten metal, and are built to your required shape and capacity.

3,422 °CMelting point of tungstenThe highest of any metal

99.95 % +Material purityRolled strip

0.02 mm ~Thickness rangeRolled to the thickness required

Coil · cutSupply FormsWound or cut

3,422 °CMelting point of tungstenThe highest of any metal

99.95 % +Material purityRolled strip

0.02 mm ~Thickness rangeRolled to the thickness required

Coil · cutSupply FormsWound or cut

Applied parts

Used as the evaporation source in vacuum coaters, the melting crucible in high-temperature furnaces and the vessel in crystal growth equipment. Material and shape are designed around what it will hold and at what temperature.

No photos registered100 %Scroll to zoom · drag to pan

MaterialTungsten (W) · Molybdenum (Mo)

Purity99.95 % and above

ProductionStress relieved after rolling

ThicknessRolled to the dimension required

WidthCut by slitting

Supply formCoil wound · cut straight

Thickness, width and supply form are set by the application. Tell us the specification you need and we will confirm and reply.

No products added

No photos registered100 %Scroll to zoom · drag to pan

MaterialTungsten (W) · Molybdenum (Mo)

Purity99.95 % and above

ProductionStress relieved after rolling

ThicknessRolled to the dimension required

WidthCut by slitting

Supply formCoil wound · cut straight

Thickness, width and supply form are set by the application. Tell us the specification you need and we will confirm and reply.

No products added

KEY FEATURES

The cross-section sets the heating

The thinner and wider the section, the faster heat spreads.

The combination of thickness and width sets the resistance and the heating rate.

Fast heat-up

Fast Heat-Up

Its low thermal mass brings the temperature up in a short time. It suits deposition sources and small heating elements.

Thickness uniformity

Thickness Uniformity

Rolling and intermediate heat treatment reduce thickness variation. Where variation is large, the thin point breaks first.

Formability

Bending and folding produce boat and contact geometries. Stress is relieved before forming to prevent cracking.

Melting points by material

Tungsten (W)3422

Molybdenum (Mo)2623

Tantalum (Ta)3017

Melting point °C. The higher the figure, the higher the temperature it withstands.

Why thickness matters

At the same width, a thinner section raises the resistance, so it heats faster and lasts less long.

Cracking after bending

Bent with residual stress, it splits at the corners. Heat treatment relieves it before forming.

KEY FEATURES

The cross-section sets the heating

The thinner and wider the section, the faster heat spreads.

The combination of thickness and width sets the resistance and the heating rate.

Fast heat-up

Fast Heat-Up

Its low thermal mass brings the temperature up in a short time. It suits deposition sources and small heating elements.

Thickness uniformity

Thickness Uniformity

Rolling and intermediate heat treatment reduce thickness variation. Where variation is large, the thin point breaks first.

Formability

Bending and folding produce boat and contact geometries. Stress is relieved before forming to prevent cracking.

Melting points by material

Tungsten (W)3422

Molybdenum (Mo)2623

Tantalum (Ta)3017

Melting point °C. The higher the figure, the higher the temperature it withstands.

Why thickness matters

At the same width, a thinner section raises the resistance, so it heats faster and lasts less long.

Cracking after bending

Bent with residual stress, it splits at the corners. Heat treatment relieves it before forming.

0.02mm ~Thickness range

3,422°CMelting point of tungsten

99.95% +Material purity

0.02mm ~Thickness range

3,422°CMelting point of tungsten

99.95% +Material purity

DESIGN PRECISION

The cross-section is set to the application

In ribbon, the combination of thickness and width is what distinguishes the product.

In the same ribbon, changing the thickness and width changes the resistance and the heating rate.

0.02mm steps

Thickness design

Thickness is set to the target resistance and the supply power.

Slittingbasis

Width cutting

Width is cut to the mounting specification.

W · Mochoice

Material selection

Tungsten where the highest temperature is needed, molybdenum where formability is.

We do not pick a specification, we develop it with you. (Give us the target temperature and the mounting specification, and we will work out the cross-section with you.)

DESIGN PRECISION

The cross-section is set to the application

In ribbon, the combination of thickness and width is what distinguishes the product.

In the same ribbon, changing the thickness and width changes the resistance and the heating rate.

0.02mm steps

Thickness design

Thickness is set to the target resistance and the supply power.

Slittingbasis

Width cutting

Width is cut to the mounting specification.

W · Mochoice

Material selection

Tungsten where the highest temperature is needed, molybdenum where formability is.

We do not pick a specification, we develop it with you. (Give us the target temperature and the mounting specification, and we will work out the cross-section with you.)

APPLICATIONS

Applications

The fields where ribbon is used. Thickness and width differ by application.

Deposition sourcesBent into boat form and used as the evaporation source in vacuum deposition.

Heating elementsUsed as strip heating elements in small high-temperature and vacuum furnaces.

Electrical contactsUsed as arc-resistant contact and bridge material.

Electron tube partsUsed as support strip and shielding pieces in vacuum tubes and X-ray tubes.

Heat treatment jigsUsed as support strip that carries thin parts.

Secondary machining stockUsed as the raw stock for other parts, through pressing and bending.

Deposition sourcesheating elementselectrical contactselectron tubesheat treatment jigs