Question 1

What is the difference between isostatic and isomolded graphite?

Accepted Answer

In Mexican industrial practice, “isomolded” is often used as a commercial synonym for isostatic graphite (CIP). Both point to material with more uniform properties than extruded or conventional molded grades. Always confirm density, grain size, and application with the supplier.

Question 2

When should I use extruded vs isostatic graphite?

Accepted Answer

Extruded graphite often fits profiles, bars, and applications where anisotropy is acceptable and cost per volume matters. Isostatic (isomolded) is chosen when you need more uniformity, fine grain, and tighter machining tolerances (EDM, precision crucibles, critical parts).

Question 3

Do you machine custom parts?

Accepted Answer

Yes. We machine graphite and carbon-graphite parts from drawings or samples, with typical tolerances down to ±0.02 in depending on geometry and grade.

Question 4

Do you carry high-purity isostatic graphite?

Accepted Answer

Yes. We stock industrial and high-purity isostatic graphite for EDM, precision components, molds, and vacuum or controlled-atmosphere applications.

Question 5

Why use graphite bushings instead of lubricated metal?

Accepted Answer

Graphite is self-lubricating dry, thermally stable, and compatible with vacuum or atmospheres where oils and greases fail or contaminate. Ideal for bushings, spacers, and rotary inserts.

Question 6

Which graphite grade is best for EDM electrodes?

Accepted Answer

Fine detail and surface finish favor fine-grain, low-porosity isostatic grades. Faster stock removal uses coarser grades. We also offer impregnated blanks when lower wear or pore sealing is required.

Question 7

When should I use a resin- or metal-impregnated blank?

Accepted Answer

Impregnation reduces open porosity, improves sealing, and can increase wear resistance. Resin is common for seals and EDM; metal impregnation adds conductivity and hardness for demanding mechanical uses.

Question 8

Is graphite suitable for high-temperature sliding plates?

Accepted Answer

Yes. Graphite plates keep a low dry friction coefficient and dimensional stability where liquid lubricants degrade. Grade (vibro-molded, isostatic, etc.) is chosen by load and atmosphere.

Question 9

Which graphite is used for crucibles and ingot molds?

Accepted Answer

Depending on metal, temperature, and thermal cycle we recommend vibro-molded, molded, or isostatic grades. We supply crucibles, ingot molds, sintering molds, and pouring spouts as catalog or custom parts.

Question 10

Do you make degassing lances and fluxing tubes?

Accepted Answer

Yes. We machine graphite degassing lances and stirring elements for non-ferrous metals, selecting grades for thermal resistance and shock.

Question 11

Do you supply carbon-graphite contacts?

Accepted Answer

Yes. We supply carbon-graphite materials and formats (bars, machined parts) for pantographs, electrical contacts, and grounding, graded by current, speed, and environment.

Question 12

Do you have graphite molds for exothermic welding?

Accepted Answer

Yes. We make graphite molds for exothermic welding using molded or isostatic grades based on reuse cycles and joint geometry.

Question 13

What graphite material is used for mechanical seals?

Accepted Answer

Faces and rings are typically machined from carbon-graphite or impregnated graphite for sealing and controlled wear. We complement with GRAFOIL for monoblock gaskets and packing.

Question 14

Is graphite suitable for blown-glass molds?

Accepted Answer

Yes. Isostatic graphite provides surface finish, thermal conductivity, and dimensional stability for molds, tongs, and float-glass fenders.

Question 15

What is the difference between isostatic and molded graphite?

Accepted Answer

Isostatic grades offer more isotropic properties, finer grain, and higher mechanical strength for precision and EDM. Molded grades are more economical for large parts with less critical requirements.

Question 16

What is extruded graphite used for?

Accepted Answer

Bars, tubes, and profiles for electrodes, resistors, bushings, and parts where extrusion-process anisotropy is acceptable or beneficial. Strong cost/performance for long lengths.

Question 17

What tolerances can you hold on machined parts?

Accepted Answer

On typical geometries we hold down to ±0.02 in; tighter tolerances are reviewed by grade, size, and operation. Send a drawing or sample to confirm capability.

Solid technical graphite

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