1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 1 2009 01 06 Revised Update title, scope, and recycle codes A. Reaume, FNA / K. Kuenzel, FNA 2006 09 13 Activated K. KuenzelPrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 4 TUBING, HIGH TEMPERATURE
2、 POLYAMIDE COVER, WSS-M98D33-A13 ETFE INNER TUBE, NON-CONDUCTIVE, LOW PRESSURE VAPOR, LOW PERMEATING FUEL LINE 1. SCOPE This specification describes the requirements for a multilayered fuel vapor carrying line. The construction consists of a heat, hydrocarbon, water, and chloride resistant outer cov
3、er of high temperature polyamide and an inner barrier layer of polyethylene tetrafluoroethylene (ETFE). Though not required, the inner ETFE layer may be conductive. Adhesion of the inner layer to the outer layer is achieved by use of an appropriate tie layer. 2. APPLICATIONS This specification was o
4、riginally released for fuel vapor and vent lines utilized in passenger car and light truck applications. This construction is sufficiently flexible to allow for ease of forming, assembly, routing, and is resistant to kinking. Maximum fuel vapor pressure during use should not exceed 0.2 MPa. Continuo
5、us operating temperatures should not exceed 120 C with maximum intermittent temperature excursions not to exceed 145 C for 48 hours. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material
6、suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 INITIAL QUALIFICATION Suppliers seeking approval to this specification must meet the initial qualification processes that include evaluating materials and constructions acco
7、rding to the applicable Fuel System Design Specification (SDS) and individual Design Verification Methods (DVM). 3.3 FUEL AND VAPOR LINE PERFORMANCE REQUIREMENTS The requirements listed in this specification represent values based on vehicle operating conditions that do not exceed 0.2 MPa fuel vapor
8、 pressure. If the fuel system is expected to exceed this pressure this construction is not appropriate for these applications. ENGINEERING MATERIAL SPECIFICATIONWSS-M98D33-A13 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.3.1 External Chemical Resistance
9、 (SAE J2027b, fluids defined in SAE J2227 or SAE J2027 unless otherwise listed) Fluid Requirement Aggressive Water No cracking after Brake Fluid (DOT 3) exposure in all fluids Ethylene Glycol and impact testing Fuel C (SAE J1681) IRM 903 Oil (ASTM D 5964) Transmission Oil (Mercon V) 3.3.2 Ozone Resi
10、stance, rating 0 (For both inner and outer layers) Test Method: Test coupon - molded per ISO 527; Precondition in Fuel C if anti-ozonants are present per SAE J1681 for 1000 hours at 60 C. Apply 1% surface strain by securing onto an appropriate curved template utilizing suitable fasteners. The requir
11、ed curvature can be calculated as follows: r = 49.5d r = radius and d = thickness (+/- 0.01mm) Ozone exposure per ASTM D 1149 with the following modifications: a) minimum 50 pphm and b) minimum 40 C and c) minimum 568 hours Inspect and rate per ASTM D1149 Acceptance criteria: ASTM Zero (0) rating =
12、No cracks and CARB “resistant to ozone“ 3.3.3 Extractables, g/m2maximum 2.7 (SAE J2260, Appendix) ENGINEERING MATERIAL SPECIFICATIONWSS-M98D33-A13 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.3.4 Burst Pressure, kPa, minimum (SAE J2260 exposure conditio
13、ns and burst procedure except as noted) Room temperature burst (As received) 1200 Room temperature burst (After cold impact) 900 Room temperature burst (After kinking) 900 High temperature burst (Burst at 145 C) 450 Room temperature burst (After exposure to zinc chloride, burst after cold impact) 90
14、0 Room temperature burst (After exposure to calcium chloride - follow % concentration and conditions for zinc chloride, burst after cold impact) 900 Room temperature burst (After heat aging in air, 1000 hours at120 C in air, burst after cold impact) 900 Room temperature burst (After heat aging in ai
15、r, 1000 hoursat120 C+ 48h at 145 C, burst after cold impact) 900 Room temperature burst (After fluid exposure, 1000h, 50mMol/L sour gas at 40 C, fluid mix per SAE J2260 or ISO 4639-3, burst after cold impact) 900 Room temperature burst (After fluid exposure, 5000 hours CM15A at 60 C per SAE J1737, r
16、ecirculation, burst after cold impact) 900 3.3.5 Cold Impact at -40 C (SAE J2260 exposure and test conditions unless otherwise noted) As received No cracks After exposure to zinc chloride No cracks After exposure to calcium chloride (Follow % concentrations and conditions for zinc chloride) No crack
17、s After heat aging in air, 1000 hours at 120 C No cracks After heat aging 1000 hours in air at 120 C + 48 h at 145 C No cracks After 1000h. 50mMol/L sour gas at 40 C (Fluid mix per SAE J2260 or ISO 4639-3) No cracks After 5000 hours CM15A at 60 C (Fluid exposure per SAE J1737, recirculation) No crac
18、ks ENGINEERING MATERIAL SPECIFICATIONWSS-M98D33-A13 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 3.3.6 Adhesion, N/mm, minimum (All constructions) (SAE J2260 exposure and test methods except as noted, spiral or strip adhesion test method) As received (SAE
19、 J2260) 1.0 After 1000h, 50mMol/L sour gas at 40 C (SAE J2260 or mixing per ISO 4639-3) 1.0 After 1000hours in air at 120 C (SAE J2260) 1.0 After 5000 hours CM15A, at 60 C (Fluid exposure per SAE J2260, recirculation) 1.0 3.3.7 Fuel Permeability Resistance, SAE J2260 Category As specified in (SAE J1
20、737, recirculation) applicable engineering Diameters of 12mm or less may be used as specification drawing surrogate samples for qualification of larger per system requirements diameter constructions Fuel CE10 40 C isothermal 0 60 C isothermal 1 3.3.8 Kink Resistance Ball must pass freely (SAE J 2260
21、) 3.3.9 Dimensional Stability, % length change, maximum 4 Longitudinal change from original Test Method: Expose 300 mm of tubing in an air circulating oven (ASTM D 573/ISO 188) for 168 h at 120 +/- 2 C. 3.3.10 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. 4.1 RECYCLING CODES OR
