1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 00 2017 05 12 Released G. Kowalski, NA Controlled document at www.MATS Copyright 2017, Ford ; Global Technologies, LLC Page 1 of 3 TUBE, POLYAMIDE 12 (PA12) COVER, POLYAMIDE 9T (PA9T) TUBE, WSS-M98D33-A16 POLYAMIDE 9T (PA9T) CONDUCTIVE I
2、NNER TUBE, HIGH PRESSURE, FUEL/ALCOHOL RESISTANT, CONDUCTIVE, LOW PERMEATING 1. SCOPE This specification defines a multilayered tubing with a conductive inner layer. The construction has low permeation rates and good resistance to fuel/alcohol blends. The multilayer tube consists of a polyamide 12 (
3、PA12) cover with a polyamide 9T (PA9T) tube and a conductive polyamide 9T (PA9T) inner liner. 2. APPLICATIONS This specification was released originally for flexible fuel lines requiring low permeation and electrical conductivity. The maximum working pressure should not exceed 690 kPa. Long term con
4、tinuous operating temperature should not exceed 100 C and maximum intermittent temperature should not exceed 115 C. These lines will meet the requirements of the US market for both reformulated and flexible fuels. 2.1 LIMITATIONS The requirements listed in this specification represent values based o
5、n vehicle operating conditions that do not exceed 0.6 MPa fuel pressure. If the fuel system is expected to exceed this pressure this construction is not appropriate for these applications. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources
6、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 CONDITIONING AND TEST CONDITIONS All te
7、st 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 material should occur in the conditioning environment or soon after removal. 3.3 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANA
8、LYSIS 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 material supplier shall ensure that all future material supplied to the specification shall produce IR spectra and thermograms
9、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 qualification processes that include evaluating materials and constructions according to the applicable Fuel System Design
10、 Specification (SDS) and individual Design Verification Methods (DVM). ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A15 Copyright 2017, Ford Global Technologies, LLC Page 2 of 3 3.5 ADDITIONAL REQUIREMENTS Requirements beyond those explicitly stated in this document and the material specification m
11、ay be specified on the Engineering drawing, Engineering specification (ES), performance specification, System Design Specification (SDS) and/or Attribute Requirement List (ARL). 3.7 PERFORMANCE CRITERIA Materials approved to this specification must also be approved to the fuel system polymeric mater
12、ials performance standard: WSS-M98P14-A1 3.7.1 Burst Pressure (SAE J2260, Room Temperature Burst, High Temperature Burst) 3.7.1.1 Room temperature burst (As received) 6000 kPa min 3.7.1.2 High temperature burst (As Received) 1500 kPa min 3.7.2 Kink resistance Ball must pass freely (SAE J2260, Ovalit
13、y Requirement) 3.7.3 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 room temperature) 3.7.4 Electrical Resistance (SAE J2260, Conductive Tubing) 3.7.4.1 Tubing Surface resistivity (as receive
14、d) less than or equal to 1 x 106 Ohms 3.7.4.2 After exposure to Fuel C Surface resistivity (1000 hours at 60 C,) less than or equal to 1 x 106 Ohms 3.7.5 Flammability Resistance, Cover Stock Only Self- extinguishing (ISO 3795) within 60 seconds 4. GENERAL INFORMATION The information given below is p
15、rovided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 RECYCLING CODES PA12/PA9T ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A15 Copyright 2017, Ford Global Technologies, LLC Page 3 of 3
16、 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 their laboratory test reports, signed by a qualified and aut
17、horized 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 request, the supplier will review the associated quality cont
18、rol documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 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 mater
19、ial originally 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
20、of a completed 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 k
21、ept until 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 is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting.
