3M Dyneon™ TF 2021 PTFE

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3M Dyneon™ TF 2021 PTFE (discontinued **)
Categories:	Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)
Material Notes:	Processable by standard paste extrusion methods Both grades can be processed at low to medium reduction ratios TF 2021 PTFE is preferred for unsintered thread sealing tapes and expanded joint sealants TF 2025 PTFE is recommended for pipe liner and applications because of its superior green strength Information provided by Dyneon, A 3M Company
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Physical Properties	Original Value	Comments

Bulk Density	0.510 g/cc	ISO 12086
Density	2.15 g/cc	ISO 12086
Particle Size	500 µm	average; ISO 12086
Thickness	63.0 mil	ASTM D4895

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	28.0 MPa	ISO 12086
Elongation at Break	340 %	ISO 12086

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+19 ohm-cm	IEC 60093
Surface Resistance	1.00e+18 ohm	IEC 60093

Descriptive Properties
Extrusion Pressure	30 MPa	reduction ratio 400, ASTM D4894
Reduction Ratio Range	20-500:1	Dyneon Method

**
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PDYNE039 / 34847

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