KOREA TUNGSTEN CO.,LTD

Mesh

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 tungstenShielding material for high-temperature furnaces

99.95 % +Material purityReduces outgassing

To drawingMesh countSpecified together with wire diameter

Roll · cutSupply FormsCut to size

3,422 °CMelting point of tungstenShielding material for high-temperature furnaces

99.95 % +Material purityReduces outgassing

To drawingMesh countSpecified together with wire diameter

Roll · cutSupply FormsCut to size

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

Wire diameterDrawn to the dimension required

MaterialTungsten (W) · Molybdenum (Mo)

Purity99.95 % and above

ProductionWoven after wire drawing

Mesh countWoven to drawing

Supply formRoll · cut

Wire diameter, mesh count and cut dimensions 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

Wire diameterDrawn to the dimension required

MaterialTungsten (W) · Molybdenum (Mo)

Purity99.95 % and above

ProductionWoven after wire drawing

Mesh countWoven to drawing

Supply formRoll · cut

Wire diameter, mesh count and cut dimensions are set by the application. Tell us the specification you need and we will confirm and reply.

No products added

KEY FEATURES

Wire diameter and open area decide performance

The finer the weave, the better it blocks and the less passes through.

The combination of wire diameter and mesh count sets the open area and the strength.

High-temperature stability

High Temperature Stability

It holds its shape without sagging or breaking even inside a high-temperature vacuum furnace.

Open area design

Open Area

Wire diameter and mesh count are varied to balance throughput against shielding performance.

Cutting · forming

Cutting & Forming

Cut to the dimensions on the drawing and, where needed, formed over a tool.

Melting points by material

Tungsten (W)3422

Molybdenum (Mo)2623

Stainless steel1450

Melting point °C. The higher the figure, the better it holds its shape at high temperature.

Why open area

A shield blocks better the more it blocks, but gas has to escape for the vacuum to hold. We look at both together.

Edge finishing

The cut edge is folded or welded to reinforce it so it does not fray.

KEY FEATURES

Wire diameter and open area decide performance

The finer the weave, the better it blocks and the less passes through.

The combination of wire diameter and mesh count sets the open area and the strength.

High-temperature stability

High Temperature Stability

It holds its shape without sagging or breaking even inside a high-temperature vacuum furnace.

Open area design

Open Area

Wire diameter and mesh count are varied to balance throughput against shielding performance.

Cutting · forming

Cutting & Forming

Cut to the dimensions on the drawing and, where needed, formed over a tool.

Melting points by material

Tungsten (W)3422

Molybdenum (Mo)2623

Stainless steel1450

Melting point °C. The higher the figure, the better it holds its shape at high temperature.

Why open area

A shield blocks better the more it blocks, but gas has to escape for the vacuum to hold. We look at both together.

Edge finishing

The cut edge is folded or welded to reinforce it so it does not fray.

3,422°CMelting point of tungsten

99.95% +Material purity

DrawingbasisMesh count

3,422°CMelting point of tungsten

99.95% +Material purity

DrawingbasisMesh count

DESIGN PRECISION

The weave is set to the application

In mesh, wire diameter and mesh count are what distinguish the product.

In the same mesh, changing the wire diameter and mesh count changes the open area and the strength.

Wire diameterspecified

Strength design

Thicker is stronger and reduces the open area.

Mesh countspecified

Open area

A finer weave shields more and passes less.

W · Mochoice

Material selection

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

We do not pick a specification, we develop it with you. (Give us the service temperature and the throughput conditions, and we will work out the weave with you.)

DESIGN PRECISION

The weave is set to the application

In mesh, wire diameter and mesh count are what distinguish the product.

In the same mesh, changing the wire diameter and mesh count changes the open area and the strength.

Wire diameterspecified

Strength design

Thicker is stronger and reduces the open area.

Mesh countspecified

Open area

A finer weave shields more and passes less.

W · Mochoice

Material selection

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

We do not pick a specification, we develop it with you. (Give us the service temperature and the throughput conditions, and we will work out the weave with you.)

APPLICATIONS

Applications

The fields where mesh is used. Wire diameter and mesh count differ by application.

High-temperature furnace shieldingUsed as heat shielding inside vacuum furnaces.

FiltersUsed as filter media for high-temperature gases and melts.

Support structuresUsed as support screens and trays that carry product.

Electron tube gridsUsed as grid material in vacuum tubes.

Deposition masksUsed as shielding and diffusing mesh in deposition processes.

Research plantUsed as shielding and support parts in test furnaces and laboratory apparatus.

Shieldingfilterssupport screenselectron tube grids

APPLICATIONS

Applications

The fields where mesh is used. Wire diameter and mesh count differ by application.

High-temperature furnace shieldingUsed as heat shielding inside vacuum furnaces.

FiltersUsed as filter media for high-temperature gases and melts.

Support structuresUsed as support screens and trays that carry product.

Electron tube gridsUsed as grid material in vacuum tubes.

Deposition masksUsed as shielding and diffusing mesh in deposition processes.

Research plantUsed as shielding and support parts in test furnaces and laboratory apparatus.

Shieldingfilterssupport screenselectron tube grids

LEAD TIME

Fabrication and Lead Time

This product is made to your drawing. Here is the process, step by step.

STEP 01

Requirements received

Send us the wire diameter, mesh count, overall dimensions and service temperature.

Reply within 1 day

STEP 02

Specification review

We review the number of shielding layers and the edge reinforcement method and propose a wire diameter.

2 – 4 days

STEP 03

Weaving · cutting

Woven to the required mesh, then cut and formed to the dimensions on the drawing.

By agreement, depending on the production schedule

STEP 04

Inspection · delivery

Mesh count and dimensions are verified, and the part ships with a test report. Repeat orders to the same drawing skip the review stage.

By agreement, depending on the production schedule

Minimum quantity

From small quantities

Varies with wire diameter and dimensions.

Standard lead time

About 2 – 3 weeks

From drawing approval. Multi-layer construction adds process stages.

Supplied with it

Test report

Mesh count and dimensional measurements are sent with the delivery.

LEAD TIME

Fabrication and Lead Time

This product is made to your drawing. Here is the process, step by step.

STEP 01

Requirements received

Send us the wire diameter, mesh count, overall dimensions and service temperature.

Reply within 1 day

STEP 02

Specification review

We review the number of shielding layers and the edge reinforcement method and propose a wire diameter.

2 – 4 days

STEP 03

Weaving · cutting

Woven to the required mesh, then cut and formed to the dimensions on the drawing.

By agreement, depending on the production schedule

STEP 04

Inspection · delivery

Mesh count and dimensions are verified, and the part ships with a test report. Repeat orders to the same drawing skip the review stage.

By agreement, depending on the production schedule

Minimum quantity

From small quantities

Varies with wire diameter and dimensions.

Standard lead time

About 2 – 3 weeks

From drawing approval. Multi-layer construction adds process stages.

Supplied with it

Test report

Mesh count and dimensional measurements are sent with the delivery.

HANDLING

Handling precautions

These apply to refractory metals in general. Service life depends heavily on how the parts are handled.

Do not touch the parts with bare hands after unpacking. Oil from fingerprints carbonizes at high temperature and becomes a contaminant.

The material is weak against impact and bending. Tungsten is brittle at room temperature and can crack if dropped.

Do not heat above 500°C in air; oxidation accelerates sharply. Always use the parts in a vacuum or an inert atmosphere.

Avoid rapid heating and cooling. On first use, we recommend pre-heating (aging) at low current.

Store indoors in a dry place and keep the moisture-barrier packaging intact.

If your installation or operating conditions are unusual, our engineers will review them in advance. Send a drawing or your process conditions and we will start by selecting the right material with you.