Sigracet 39 BC

Brand: SGL Carbon
Product Code: 1592007

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This product has been discontinued and we are completely out of stock. Sigracet 39 BC was discontinued and permanently replaced by Sigracet 39 BB.

Sigracet 39BC is a non-woven carbon paper gas diffusion media with a Microporous Layer (MPL) that has been PTFE treated to 5%. It has a total thickness of 325 um (microns). SGL 39 BC is a great low-cost alternative to conventional woven carbon paper Gas Diffusion Layer (GDL) materials.

The Sigracet Carbon Fiber Paper 39 Series is intended to combine the required production robustness and the excellent performance properties.  Stack developers and assemblers are benefiting from the following greatly improved characteristics:

  • Greatly improved homogeneity inter-lot and intra-lot.  The overall variability has been shown to be better than +/- 10% (2 sigma)
  • Greatly improved surface flatness
  • Greatly reduced occurrence of faulty spots on a roll
  • Best performance under various operating conditions
Gas Diffusion Layer Properties
Material Type Carbon Fiber Paper
Thickness 325 microns +/- 25 microns
Basic Weight (g/m²) 105 +/- 10
Air Permeability (s) 1.50 +/- 1.00 cm3/(cm²*s)
Porosity (%) 80%
Compressibility ca. 21% (at 1 MPa)
Electrical Resistivity (through plane) < 12 mΩcm² (milliohms cm²)
IP Pressure Drop 0.4 bar (at 1 MPa)
Ash Content < 0.25%
Substrate PTFE Treatment 5%
Microporous Layer Yes, on one side

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