Nafion™ XL

Nafion™ XL
Nafion™ XL
Brand: Chemours
Product Code: NXL
Availability: In Stock
Price: $34.00

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Please note that Nafion™ XL has been discontinued by Chemours and only limited supplies are available for the time being.

Nafion™ XL at 27.5 micrometers (1.1 mil) thick.

Chemours' Nafion™ XL membrane is an extended-lifetime reinforced membrane based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form. The reinforcement improves the membrane's handling and physical properties. When the reinforcement is combined with the chemically stabilized polymer, the membrane exhibits both substantially lower fluoride ion release and longer operating durability under fuel cell conditions.The membrane is positioned between a backing film and a cover-sheet.

Please contact us at for the SDS and technical data sheets (TDS).

Thickness 27.5 micrometers (1.1 mil)
Basic Weight (g/m²) 55
Tensile Strength - max. (MPa) 45 (MD), 40 (TD) - Method: ASTM D 882
Non-Std Modulus (MPa) 613 (MD), 400 (TD) - Method: ASTM D 882
Elongation to Break (%) 200 (MD),185 (TD) - Method: ASTM D 882
In-Plane Conductivity (mS/cm) > 72.0
Through-Plane Conductivity (mS/cm) > 50.5
Hydrogen Crossover (ml/min·cm²) < 0.015
Hydrolytic Properties
Water content (% water) 5.0 ± 3.0% - Method: ASTM D 570
Water uptake (% water) 50.0 ± 5.0% - Method: ASTM D 570
Linear Expansion % increase - 50% RH, 23°C to water soaked 23°C 1% (MD), 5% (TD)
Linear Expansion % increase - 50% RH, 23°C to water soaked 100°C 3% (MD), 11% (TD)

Inc 5000