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US 640

Woven Filtration

US 640 is a woven monofilament filtration geotextile made of 100% high-tenacity polypropylene yarns. US 640 resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 640 has a Percent Open Area of 6% and resists clogging. US 640 meets the following M.A.R.V. values except where noted:

US 640
US 640 Test Results
Property Test Method English Metric
Tensile StrengthASTM D-4632350 x 200 lbs1,557 x 890 N
Elongation @ BreakASTM D-463215 x 15%15 x 15%
CBR PunctureASTM D-6241800 lbs3,559 N
Trapezoidal TearASTM D-4533100 x 70 lbs445 x 312 N
Apparent Opening SizeASTM D-475140 US Sieve0.425 mm
PermittivityASTM D-44910.50 Sec-10.50 Sec-1
Water Flow RateASTM D-449160 g/min/sf2,460 l/min/sm
Percent Open AreaCW-022156%6%
UV Resistance @ 500 HoursASTM D-449190%90%
US 640 Shipping & Packaging
Roll Sizeselect roll size from this list ->
Roll Diameter 9.0 in
Roll Width 6'
Roll Weight 89 lbs
Rolls per Trailer 488
Roll Diameter 9.0 in
Roll Width 12'
Roll Weight 175 lbs
Rolls per Trailer 250
AASHTO Plain Erosion Control
US Fabrics Filtration

* Historical averages (current values not available): Mullen Burst Strength ASTM D3786 is no longer recognized by ASTM D-35 on Geosynthetics as an acceptable test method. Puncture Strength ASTM D4833 is not recognized by AASHTO M288 and has been replaced with CBR Puncture ASTM D6241.

This information is provided for reference only and is not intended as a warranty or guarantee. US Fabrics assumes no liability in connection with the use of this information (1/2019).