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GrafTech GRAFCELL® FFP-300 SERIES Flow Field Plate Graphite

Category Carbon , Graphite
Manufacturer GrafTech International
Trade Name GRAFCELL®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF GrafTech GRAFCELL® FFP-300 SERIES Flow Field Plate Graphite.pdf
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Material Notes:
Manufactured from expanded natural graphite, GRAFCELL® Flow Field Plate (FFP) components retain a continuous graphitic phase. This phase continuity, combined with a low contact resistance, provides electrical and thermal properties in comparison to both synthetic graphite composite and metallic fuel cell components. The thermal diffusivity of GRAFCELL® FFP SERIES products is 8-12 times higher than composite materials and 33 times higher than stainless steel. GRAFCELL® FFP SERIES products have played a critical role in improving fuel cell power density and performance for over 10 years. With over two million kilometers of road experience in car and bus applications annually, GRAFCELL® FFP SERIES continuous phase flow field plates have replaced synthetic graphite as the premier material for PEM fuel cells.
Physical Properties Metric English Comments
Density 1.50 g/cc
0.0542 lb/in³
Permeability <= 1.0
<= 1.0
cc/min (1 atm, 15 psi limit)
Thickness >= 300 microns
>= 11.8 mil
Minimum Web
>= 3000 microns
>= 118 mil
plus or minus 100 microns
Mechanical Properties Metric English Comments
Tensile Strength at Break 30.0 - 50.0 MPa
4350 - 7250 psi
Flexural Strength 50.0 - 70.0 MPa
7250 - 10200 psi
Thermal Properties Metric English Comments
CTE, linear 1.00 - 5.00 µm/m-°C
0.556 - 2.78 µin/in-°F
(x-y)
10.0 µm/m-°C
5.56 µin/in-°F
(z)
Thermal Conductivity 5.00 W/m-K
34.7 BTU-in/hr-ft²-°F
(z)
275 W/m-K
1910 BTU-in/hr-ft²-°F
(x-y)
Glass Transition Temp, Tg 125 °C
257 °F
Electrical Properties Metric English Comments
Electrical Resistivity 0.000700 ohm-cm
0.000700 ohm-cm
(x-y); ASTM-C611 (4-Point Resistivity Test)
0.0300 ohm-cm
0.0300 ohm-cm
(z); ASTM-C611 (4-Point Resistivity Test)
Descriptive Properties Value Comments
Contact Resistance (µOcm²) 8
Thermal Diffusivity (cm²/sec) 1.2
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