Specialty Graphite

products for mechanical applications:

carbon bearings and sealing rings:

sliding bearings of water pumps
pistons and guide rings
sliding bearings for compressors and pumps
sealing rings of winchs for water turbine
gaskets for exhaustings valve in automotive

Construction Graphite:

vaccuum furnaces - heaters, construction components
crystallizers for continuous metal casting
melting crucibles and other components for precious metals processing
heating resistance elements
crucibles for chemical analyses
products for spectral analyses
carbon products for glass industry
blades for rotating compressors and pumps
products for chemical equipment
forms for microelectronics
graphite cylinders for lubricating glass silks

Purified Graphite for spectral analysis:

Virtually all graphite products can be purified in our own purification facility.

We offer various graphite crucibles and other products for spectral analysis.

Products for Other special applications:

sintered products
thermosets with carbon filler
carbongraphite and electrographite welding electrodes
carbongraphite and electrographite semi-products

MATERIaLs:

We produce a broad range of our own materials, as well as we possess an assortment of purchased materials, that enables us to offer to our customers the benefits of both approaches. After we recieve an inquiry, we offer our customer material according to his specification, we can also recommend the most suitable material for the particular application.

Materials we produce are under our control. We use our development to enhance its parameters, also change according to customers requirements is possible.
On the other side, especially for production of specific products, we use materials that we purchase from specialised producers.

Own materials:

CarbonGRAPHITES

Mark	Volume density (mean value)	Specific elec.resist (mean value)	Hardness HRB (mean value)	Compression strength (min.)	Bending Strength (min.)	Poro- sity (max.)	Termal conductivity (min.)	Term.coeff. of length.expa. (max.)	Temperature resistance in inert atmosphere	Temperature resistance in oxid. atmosphere	Impreg- nation	Applications
CG 358	1,50	min. 42	95 HR 10/100	50	14	25	12	2,0	1000	350		Machine parts working in liquids-no emphasis is given to impermeability,resistant rings
CG 359	1,60	-	min. 60 HR 5/20	90	30	2	22	6,0	110	110		Bearings of water pumps, glands, vanes
CG 360	1,65	-	min. 60 Sh	90	30	5	25	6,0	180	180		Machine parts working in liquids,glands, plain bearings, vanes

ELECTROGRAPHITES

Mark	Volume density (mean value)	Specific elec.resist (mean value)	Hardness HRB (mean value)	Compression strength (min.)	Bending Strength (min.)	Poro- sity (max.)	Termal conductivity (min.)	Term.coeff. of length.expa. (max.)	Temperature resistance in inert atmosphere	Temperature resistance in oxid. atmosphere	Impreg- nation	Applications
EG 621	1,66	max. 17	97 HR 10/100	70	30	14	-	-	2400	350		Moulds for metal casting and moulds for hot pressing
EG 624	1,55	20	88 HR 10/100	-	-	-	-	-	2400	350		Sealing moulds for glass industry and microelectronics
EG 625	1,50	max. 30	83 HR 10/60	25	12	30	-	-	2400	350		Wide range of use in technical applications

METALGRAPHITES

Mark	Volume density (mean value)	Specific elec.resist (mean value)	Hardness HRB (mean value)	Compression strength (min.)	Bending Strength (min.)	Poro- sity (max.)	Termal conductivity (min.)	Term.coeff. of length.expa. (max.)	Temperature resistance in inert atmosphere	Temperature resistance in oxid. atmosphere	Impreg- nation	Applications
MG 413	5,80	-	70 HR 10/60	-	-	-	-	-	-	-		Grounded contacts for electrical driving vehicles-locomotives
MG 479	4,70	-	85 HR 10/40	-	-	-	-	-	-	-		Sealing rings for exhaust box in cars
MG 480	4,85	-	102 HR 5/20	-	-	-	-	-	-	-		Sealing rings for exhaust box in cars
MG 488	5,50	-	min. 65 HR 10/100	-	-	-	-	-	-	-		Brake drum linings for eletrical driving vehicles

MATERIALS BASED ON THERMOSETTING PLASTICS WITH CARBON FILLER

Mark	Volume density (mean value)	Hardness HRB (mean value)	Compression strength (min.)	Bending Strength (min.)	Poro- sity (max.)	Termal conductivity (min.)	Term.coeff. of length.expa. (max.)	Applications
BG 391	1,70	115 HR10/60	150	65	0,5	15	23	Machine parts working in dry conditions (vanes of vacuum pumps)
BG 392	1,65	105 HR10/60	85	55	1,0	-	14	Machine parts working in dry conditions (vanes of vacuum pumps)
BG 394	1,60	112 HR10/60	215	70	0,5	10	28	Machine parts working in liquids and dry conditions (sealing ring, vanes)

CARBON MATERIALS FOR SPECTRAL ANALYSES

Mark	Volume density (mean value)	Specific elec.resist (mean value)	Bending Strength (min.)	Poro- sity (max.)	Termal conductivity (min.)	Ash content (max.)	Purity Trace elements B	Purity Trace elements Ca	Purity Trace elements Cu	Purity Trace elements Fe	Purity Trace elements Mg	Purity Trace elements Si	Purity Trace elements Al	Purity Trace elements Ti
SE 216	1,70	11	30	30	140	2	0,01	0,10	0,10	0,20	0,01	0,10	0,05	0,01
SE 232	1,65	15	20	30	140	2	0,01	0,10	0,10	0,20	0,01	0,10	0,05	0,01

Purchased MATERIALS:

For production of specific products we use materials purchased from specialised producers. More information and other material grades available upon request.