DANA DANA
CHEMOTHERM
Graphite/Metal Laminates
Technical Data Sheet 141
(previously TDS 641)
Edition: 08/2015, supersedes all prior editions.
Please see the latest issue at www.reinz-industrial.com
 Sheet as a PDF document safe/print
Material
CHEMOTHERM is the designation for asbestos-free materials made of expanded graphite and various metal cores.
       
Designation Core type Core material Thickness
       
CHEMOTHERM SP tanged core galvanized steel 0,2/0,25 mm
       
CHEMOTHERM SPE tanged core 1.4401 0,1 mm
       
Properties
CHEMOTHERM is characterized by exceptionally good chemical and thermal resistance, high compressibility, i.e. good conformability to irregular and rough sealing faces, low creep, good gas sealability, and consistent material properties even under alternating operating conditions. The tanged core guarantees  excellent resistance against blow-out at high pressures.

Application
CHEMOTHERM SP is used to seal cylinder heads and exhaust systems of IC engines and wherever high, alternating thermal and mechanical stress is encountered and where the medium to be sealed allows the use of a zinc-galvanized steel core. This version is also a very economical alternative to CHEMOTHERM SPE.

Thanks to its stainless steel core, CHEMOTHERM SPE covers the same application range of CHEMOTHERM SP. However, the material is also used primarily to seal aggressive media in pipelines and apparatus construction.

Approvals
CHEMOTHERM SPE:
   
DIN-DVGW In accordance with DIN 3535, Part 6
   
BAM German Federal Institute for Materials Research and Testing. Gaskets for flanged joints of copper, copper alloys, and steel. Gaseous oxygen up to 130 bar and 200 °C. Liquid oxygen.
   
UVV 61* "Gases", AD-B7 (VdTÜV)
   
Germanischer
Lloyd (DNV GL)
Approval for shipbuilding

   
   
CHEMOTHERM SP:
   
UVV 61* "Gases", AD-B7 (VdTÜV)
   
* Blow-out resistance in combination with inner metal bead.
   
Technical Data
CHEMOTHERM SP
(nominal thickness 2.0 mm)
Purity of graphite layer
ash content % < 4
chloride content ppm < 50
     
Initial density
of graphite layer g/cm³ 1.0 - 1.1
     
Residual stress acc. to DIN 52 913
16 h, 300 °C N/mm² > 45
     
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility % 15 - 25
recovery % > 20
     
Sealability against nitrogen
acc. to DIN 3535, part 6 (FA) mg/(s·m) < 0.1
     
Swelling acc. to ASTM F 146:
     
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness % < 5
     
in ASTM Fuel B
5 h, room temp.
increase in thickness % < 10
     
Operating temperature
in inert or reducing
atmosphere
up to the operating limits of the core material used
     
in air °C -200 up to +450
     

Operating pressure (max.)

at 450 °C

bar 100
     
The data quoted above are valid for the material "as delivered" without any additional treatment. In view of the countless possible installation and operating conditions, definitive conclusions cannot be drawn for all applications regarding the behaviour in a sealed joint. Therefore, we do not give any warranty for technical data, as they do not represent assured characteristics. If you have any doubt, please contact us and specify the exact operating conditions.

Technical Data
CHEMOTHERM SPE
(nominal thickness 2.0 mm)
Purity of graphite layer
ash content % < 2
chloride content ppm < 50
     
Initial density
of graphite layer g/cm³ 1.0
     
Residual stress acc. to DIN 52 913
16 h, 300 °C N/mm² > 48
     
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility % 30 - 45
recovery % 10 - 20
     
Sealability against nitrogen
acc. to DIN 3535, part 6 (FA) mg/(s·m) < 0,08
     
Swelling acc. to ASTM F 146:
     
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness % < 5
     
in ASTM Fuel B
5 h, room temp.
increase in thickness % < 10
     
Operating temperature
in inert or reducing
atmosphere
up to the operating limits of the core material used
     
in air °C -200 up to +450
     
Operating pressure (max.)
at 450 °C bar 100
     
Sealing parameters see corresponding Tables

The data quoted above are valid for the material "as delivered" without any additional treatment. In view of the countless possible installation and operating conditions, definitive conclusions cannot be drawn for all applications regarding the behaviour in a sealed joint. Therefore, we do not give any warranty for technical data, as they do not represent assured characteristics. If you have any doubt, please contact us and specify the exact operating conditions.

Form of delivery
CHEMOTHERM SP, CHEMOTHERM SPE
   
Gaskets
according to a drawing, dimensions supplied, or other arrangements
   
Rolls up to 500 mm wide
   
Nominal thicknesses
1.0 mm/1.5 mm/2.0 mm, other thicknesses by agreement.
   
Tolerances according to DIN 28 091-1
   
© VICTOR REINZ 2012
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