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    FORD WSL-M96D37-A-2018 HOSE POLYTETRAFLUOROETHYLENE (PTFE) CONTINUOUS FILAMENT GLASS BRAID COVERED CONDUCTIVE FUEL RESISTANT TO BE USED WITH FORD WSS-M99P1111-A .pdf

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    FORD WSL-M96D37-A-2018 HOSE POLYTETRAFLUOROETHYLENE (PTFE) CONTINUOUS FILAMENT GLASS BRAID COVERED CONDUCTIVE FUEL RESISTANT TO BE USED WITH FORD WSS-M99P1111-A .pdf

    1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2018 08 26 Revised See Summary of Revisions G. Kowalski, NA 2008 03 19 Revised Inserted 2.1 K. Kuenzel 1993 02 11 Released NGA1E10269419001 L. Gullen Controlled document at www.MATS Copyright 2018, Ford Global Technologies, LLC Page 1

    2、of 4 HOSE, POLYTETRAFLUOROETHYLENE (PTFE), CONTINUOUS WSL-M96D37-A FILAMENT GLASS BRAID COVERED, CONDUCTIVE FUEL RESISTANT 1. SCOPE This specification defines a hose material fabricated from seamless polytetrafluoroethylene (PTFE) tube having good fuel and permeation resistance. The cover is externa

    3、lly reinforced with a continuous filament glass fiber braid, which may contain up to 10% aramid fiber as an additive for wear resistance. The hose will withstand temperatures up to 250 C and down to -40 C. 2. APPLICATION This specification was released originally for flexible fuel lines used for lig

    4、ht truck applications. 2.1 LIMITATIONS With electrostatic dissipative PTFE tubing, caution must be taken to remove large carbon agglomerates prior to billeting. The mix sequence for the incorporation of carbon black and the carbon black raw material must be evaluated for agglomerate formation and ma

    5、terial should be sifted prior to forming the extrusion billets. These measures are to prevent the formation of potential leak paths and ensure homogenous heating during the sintering operation when using an infrared heat source. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the us

    6、e of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2

    7、 HOSE CONSTRUCTION The hose material shall consist of a tube of high grade PTFE as defined by WSL-M4D632-A with a cover of braided continuous filament E type glass + up to 10% aramid fiber covering 90% minimum of the tubes outer surface. The glass braid shall be completely covered with a PTFE emulsi

    8、on giving the hose a smooth abrasion resistant cover. 3.3 PERFORMANCE CRITERIA The following tests, where possible, shall be performed on finished hoses and/or test specimens cut from them in accordance with ASTM D 3183 (cutting knife procedure preferred). Greater variation in test values can be ant

    9、icipated when evaluating materials that are thinner then recommended by an applicable Industry Standard/Test Method. Materials approved to this specification must also be approved to the fuel system polymeric materials performance standard: WSS-M98P14-A2/A6 ENGINEERING MATERIAL SPECIFICATION WSL-M96

    10、D37-A Copyright 2018, Ford Global Technologies, LLC Page 2 of 4 3.3.1 Adhesion 262 N/m min (ASTM D 413, Strip Method, Type A, 25 mm/minute test speed, tube to cover) 3.3.2 Melting Point 320 C min (ISO 1218, Method B/ASTM D 789, cover only) 3.3.3 Burst Pressure 3.5 MPa min (ASTM D 380) 3.3.4 Cold Imp

    11、act at -40 C 2.8 MPa min (SAE J844, except precondition tubing for 72 h in Fuel B at 30 C) 3.3.5 Fuel Permeability Resistance 10 g/m2/24 h (SAE J30, except 85% Fuel C +15% Methanol for 21 d) 3.3.6 Flammability (ISO 3795) Burn Rate 100 mm/minute max Hose must be self-extinguishing within 60 s. 3.3.7

    12、Resistance Test Report Value (SAE J1645, Less than 1x10E6 Ohm (1MegaOhm) Resistance at up to 1,000V applied between any two test points on the component/sample) 3.3.8 Dissipation Test PTFE 4.2 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of in

    13、terest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Mate

    14、rial Specification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. ENGIN

    15、EERING MATERIAL SPECIFICATION WSL-M96D37-A Copyright 2018, Ford Global Technologies, LLC Page 4 of 4 4.3 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material or

    16、iginally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a c

    17、ompleted Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept un

    18、til Job 1. 4.4 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It

    19、is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMARY OF REVISIONS 2018 08 26 Changed 3.3 section title Moved test specimen instructions from 3.2 to 3.3 Updated standard paragraphs and re-numbered as needed Changed requirement to report only and removed FLTM method from 3.3.7 resistance test Added 3.3.8 dissipation test


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