Spectracarb 2050A-1550

Brand: Engineered Fibers Technology
Product Code: 1593005

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This material has been discontinued and we are completely out of stock.


Spectracarb™ 2050A-1550 Gas Diffusion Layer (GDL) is a heavy duty porous graphitized carbon sheet with low compressibility and with general utility for a range of PEM fuel cell applications, including both commercial and military applications. This GDL has very similar properties to that of Toray Carbon Paper 120.

Spectracarb™ 2050A-1550 has a higher density than Spectracarb™ 2050A-1535 (0.50 g/cm³ vs 0.35 g/cm³)

Spectracarb 2050 Gas Diffusion Layer (GDL) sheets are specifically designed for use in PEM, DMFC and PAFC fuel cells, Electrolyzers, Humidifiers and other Electrochemical Devices and optimized for: 

  • Electrical Conductivity
  • Mechanical Strength and Durability
  • Gas/Air Permeability
  • Water Management


Spectracarb GDLs are produced in the USA and are available in a wide range of standard and custom grades, densities, sizes and materials for fuel cells, electrolyzers, humidifiers, specialty batteries and other electrochemical applications.

Spectracarb Properties
Material Type Carbon Fiber Paper
Thickness (um) .381 mm (381 microns)
Basic Weight (g/cm²) 175
Density 0.50 g/cm3
Porosity 78%
Flexural Strength 40 MPa
Air Permeability (Through-Plane) 35 cfm/ft²
Electrical Resistivity (Through-Plane) 15 mΩcm @ 200 kPa
Electrical Resistivity (In-Plane) 5.4 mΩcm
Thermal Conductivity - Through-Plane (@ 25°C) 3.4 W/m·K
Thermal Conductivity - Through-Plane (@ 100°C) 3.6 W/m·K
Thermal Conductivity - In-Plane (@ 25°C) 20.7 W/m·K
Thermal Conductivity - In-Plane (@ 100°C) 24.2 W/m·K
PTFE Content None
Microporous Layer (MPL) None

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