1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 3 2016 01 26 Revised See summary of revisions A. Reaume / G. Kowalski 2006 10 31 Revised Inserted 3.0; Deleted 3.1,3.2,3.3,3.5, Global Technologies, LLC Page 1 of 3 TUBE, POLYAMIDE 12 (PA12) COVER, TIE LAYER, WSS-M98D33-A1 ETFE TUBE, LOW
2、 PRESSURE, FUEL/ALCOHOL RESISTANT, NON-CONDUCTIVE, LOW PERMEATING 1. SCOPE This specification defines a Multilayered Tubing with a non-conductive inner layer. The construction has low permeation rates and good resistance to fuel/alcohol blends 2. APPLICATIONS This specification was released original
3、ly for flexible fuel vapor lines requiring low permeation. The maximum working pressure should not exceed 104 kPa. Long term continuous operating temperature should not exceed 90 C and maximum intermittent temperature should not exceed 115 C. These lines will meet the requirements of the US market f
4、or both reformulated and flexible fuels. 2.1 LIMITATIONS The requirements listed in this specification represent values based on vehicle operating conditions that do not exceed 0.6 MPa fuel pressure. If the fuel system is expected to exceed this pressure the construction is not appropriate for the a
5、pplication. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use 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 loc
6、ated within Ford at or available externally through a Ford Materials Engineer. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the mat
7、erial should occur in the conditioning environment or soon after removal. 3.3 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms from initial material approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. The mate
8、rial supplier shall ensure that all future material supplied to the specification shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.4 INITIAL QUALIFICATION Suppliers seeking approval to this specification must meet the initial
9、 qualification processes that include evaluating materials and constructions according to the applicable Fuel System Design Specification (SDS) and individual Design Verification Methods (DVM). ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A1 Copyright 2016, Ford Global Technologies, LLC Page 2 of 3
10、 3.5 ADDITIONAL REQUIREMENTS Requirements beyond those explicitly stated in this document and the material specification may be specified on the Engineering drawing, Engineering specification (ES), performance specification, System Design Specification (SDS) and/or Attribute Requirement List (ARL).
11、3.6 PERFORMANCE CRITERIA Materials approved to this specification must also be approved to the fuel system polymeric materials performance standard: WSS-M98P14-A1 3.6.1 Burst Pressure (SAE J2260, Room Temperature Burst, High Temperature Burst) 3.6.1.1 Room temperature burst 832 kPa min (As received)
12、 3.6.1.2 High temperature burst 312 kPa min (Burst at 90C) 3.6.2 Kink Resistance Ball must pass freely (SAE J2260, Ovality Requirement) 3.6.3 Dimensional Stability, length change 4 % max (Expose 300 mm of tubing in an air circulating oven (ASTM D 573/ISO 188) for 168 h at 120 +/- 2 C., measure at ro
13、om temperature) 3.6.4 Flammability Resistance, Cover Stock Only Self- extinguishing (ISO 3795) within 60 seconds 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engine
14、ering Material Specifications. 4.1 RECYCLING CODES PA12,ETFE 4.2 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a completed copy of
15、their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon r
16、equest, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A1 Copyright 2016, Ford Global Technologies, LLC Page 3 of 3 4.3 SUPPLIERS ONGOING RESP
17、ONSIBILITY 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 originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplie
18、r shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specificati
19、ons, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.4 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction appl
20、ies 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 is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMA
21、RY OF REVISIONS 2016 01 26 Added approved sources Added conditioning and test conditions Added infrared spectrophotometry and/or thermal analysis Added approval of materials Added suppliers ongoing responsibility Added restricted substance management standard Added initial qualifications Added limit
22、ations Added additional requirements Added flammability resistance, cover stock only Added summary of revisions The following paragraphs are covered in WSS-M98P14-A1 and were deleted from this document. Para 3.4.3 Removed heat aged testing (168 hours) Para 3.4.4 Removed heat aged testing (1008 hours
23、) Para 3.4.5 Removed resistance to chlorides Para 3.4.6 Removed burst test kinked tubing Para 3.4.8 Removed cold temperature impact Para 3.4.9 Removed fuel resistance Para 3.4.10 Removed oxidized fuel resistance (sour gas) Para 3.4.11 Removed permeation testing Para 3.4.12 Removed fluid resistance cover stock
