AvCarb Material Solution’s Gas Diffusion System GDS3215 EP40 combines AvCarb's proprietary carbon fiber paper, a PTFE treatment, and micro-porous layer coating, designed for the rigorous demands of specific fuel cell applications such as Proton Exchange Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), and Phosphoric Acid Fuel Cells (PAFC).

AvCarb EP40 is the base material used in GDS3215.

Due to the low demand of this GDL product, the manufacturer has no long term plans for manufacturing it. We recommend AvCarb MB30 as an alternative product.

AvCarb Gas Diffusion Systems (GDS) Carbon Paper Properties Sheet

AvCarb Gas Diffusion Systems (GDS) Carbon Paper Selection Guide

AvCarb Gas Diffusion Systems Properties
Material Type	Carbon Fiber Paper
Base Material	AvCarb EP40
Nominal Thickness (@ 5.00 N/cm²)	.200 mm (200 microns)
Nominal Base Weight	60 g/m²
Break Strength machine direction	12.0 MPa
Break Strength cross machine direction	5.0 MPa
Stiffness machine direction	12.0 Taber
Stiffness cross machine direction	5.0 Taber
Bulk Density (@ 0.68 N/cm² / 1psi)	0.30 g/cm3
Compressibility ((22N - 113N)/22 x 100%)	10.0%
Through-Plane Resistivity	<14.0 mOhm*cm²
PTFE Treatment	Yes
Microporous Layer (MPL)	Yes, on one side