1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 04 03 EP00E10460470000 Released L. RodigasWP 3948-a Page 1 of 6 THERMOPLASTIC POLYESTER-ETHER ELASTOMER (TEEE) WSS-M4D683-A240 DUROMETER D HARDNESS, HEAT STABILIZEDMOLDING COMPOUND1. SCOPEThe mate rial defin
2、ed by this specification is a heat stabilized, rigidther moplastic polyester-ether elastomer (TEEE), 40 durometer D hardness,preferable for injection molding.2. APPLICATIONThis specification was released originally for material used for functionalplugs.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie r
3、s must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously
4、reduced.3.1.1 All requirements of thi s specification, identified by symbol(s), shall be met with data representing 3 sigma values.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this
5、specification.The IR spectra and thermograms established for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the s
6、ame conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGIN
7、EERING MATERIAL SPECIFICATIONWSS-M4D683-A2WP 3948-b Page 2 of 6 3.4 MOLDING COMPOUND(s) 3.4.1 Melt Flow Rate 11 - 17 g/10 minutes(ISO 1133, 230 C, 2.16 kg)3.5 MOLDED TEST SPECIMEN3.5.1 Preparation of Test SpecimensUnless otherwise specif ied all tests shall be carried out oninjection molded one-end
8、gated test specimens.The following dimensions are required:A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167)B. 120 x 10 x 4.0 +/- 0.2 mmSpeci mens with shorter dimensions shall be cut from thecenter portion of the test specimen A and/or B. Thespecime ns shall be prepared according to ISO 294.
9、 Noannealing allowed.3.5.2 Density 1.22 - 1.26 g/cm3(ISO 1183, Method A)3.5.3 Hardness, Durometer D 38 - 48(ISO 868, 15 s dwell)(s) 3.5.4 Tensile Strength at Yield, min 8 MPa(ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 500 mm/minute test speed)(s) 3.5.4.1 Elongation at Yield, min 45 %(Tes
10、t Method accordingto para 3.5.4)(s) 3.5.5 Flexural Modulus, min 105 MPa(ISO 178, 80 x 10 x 4.0 +/- 0.2 mmspecimen, 2 mm/minute test speed,64 mm support span)3.5.6 Shear Modulus at 23 C 30 - 50 MPa(ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15 %, strain level below 1 %. Speci
11、men approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum)ENGINEERING MATERIAL SPECIFICATIONWSS-M4D683-A2WP 3948-b Page 3 of 6 Additionally, a Shear M odulus versus Temperature curve sha
12、llbe plotted for - 50 to + 140 C temperature range, at 5 Cminimum intervals. The plotted curve must be withintolerance range shown on page 6.(s) 3.5.7 Impact Strength, Izod, min(ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test)3.5.7.1 At 23 +/- 2 C No break3.5.7.2 At - 40 +/
13、- 1 C 6 kJ/m23.5.7.3 At - 10 +/- 2 C 25 kJ/m2The test specimens mu st be conditioned for minimumof 6 h at the above s pecified temperature prior toimpact test. Low temperature testing shall be donewithin the cold box.3.5.8 Heat Aging Performance(ISO 188, except 150 +/- 50 air changes/h, 1000 h at 11
14、0 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination)3.5.8.1 Tensile Strength at YieldChange +/- 25 %(Test Method per para 3.5.4)3.5.8.2 Impact Strength, Izod Change No break(Test Method per para 3.5.7.1,specimens to be notched beforeheat aging)3.6 F
15、OGGING(FLTM BO 116-03, 3 h at 100 C heating,21 C cooling plate)Fog Number, min 90Formation of clear film, droplets or crystals is cause for rejection.3.7 FLAMMABILITY(ISO 3795)Burn Rate, max 100 mm/minuteThe specimen size required for material approval is 355 x 100 x 1.0+/- 0.1 mm with a smooth surf
16、ace.ENGINEERING MATERIAL SPECIFICATIONWSS-M4D683-A2WP 3948-b Page 4 of 6 3.8 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with r
17、espectto these properties shall be clearly designated on the Engineeringdrawing.3.9 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties,
18、composition,constr uction, color, processing or labeling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineeri
19、ng activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this docu
20、ment. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an ex
21、pression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci li
22、ty, demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and
23、on anassessment of suitability for intended process and/or application. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the requirements to the specification.5
24、.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 30E-5/ C(ASTM E 831 (TMA), temperature range 20 to + 100 C)ENGINEERING MATERIAL SPECIFICATIONWSS-M4D683-A2WP 3948-b Page 5 of 6 5.2 MOLD SHRINKAGE(ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mminjection molded specimen)5.2.1 Molding Shrinkage. After 48 h at 23 +/- 2 C 1.2 - 1.5 %5.2.2 Post Shrinkage(Separate specimens required foreach test). After 48 h at 80 C 0.1 - 0.5 %. After 30 min at 120 C 0.2 - 0.7 %5.3 RECYCLING CODETEEEENGINEERING MATERIAL SPECIFICATIONWSS-M4D683-A2WP 3948-b Page 6 of 6
