1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1996 02 12 Activated M. MasserantWP 3948-a Page 1 of 6 POLYPROPYLENE (PP) COPOLYMER, 25 % MINERAL WSS-M4D945-A1FILLED MOLDING COMPOUND1. SCOPEThe ma terial defined by this specification is a molding compound base
2、d onpolypr opylene copolymer, 22 - 26 % mineral (CaCO3) filled, for covered ornon exposed interior applications.2. APPLICATIONThis s pecification was released originally for material used for interiorvisors cores.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers mus
3、t conform to Quality SystemRequirements, QS-9000. Material specification r equirements are to beused fo r initial qualification of materials. A Control Plan forongoing production verification is required. This plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d Sup
4、plier Technical Assistance (STA) prior to production partssubm ission. Appropriate statistical tools must be used to analyzepr ocess/product data and assure consistent processing of thematerials.Part producers using this material in their products, must use Fordapproved materials and must conform to
5、 a process control plan whichhas been approved by STA and/or the relevant Materials Activity.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 opt
6、ion, may conduct infrared and/ortherma l analysis of material/parts supplied to this 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 sp
7、ectraand thermograms that correspond to the reference standard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONWSS-M4D945-A1WP 3948-b Page 2 of 6 3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina c ontrolled atmosphere
8、of 23 +/- 2 EC and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 MOLDING COMPOUND(s) 3.4.1 Melt Flow Rate 15 - 18 g/10 minutes(ISO 1133, 230 EC, 2.16 kg)(s) 3.4.2 Filler Content 22 - 26 %(ISO 3451-1, Method A,65
9、0 +/- 25 EC, CaCO3)3.5 MOLDED TEST SPECIMEN3.5.1 Preparation of Test SpecimensUnless otherwise specif ied all tests shall be carried out oninjection molded one-end gated test specimens.The following dimensions are required:A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A)B. 60 x 60 x 2.0 +/-
10、0.1 mm (ISO/DIS 294-3)C. 355 x 100 x 1.0 +/-0.1 mm (ISO 3795)Test specimen A shall be molded using molding conditionsdef ined in ISO 1873-2. Specimens with shorter dimensionsshall be cut from the center of the specimen A. No annealingallowed.3.5.2 Density 1.04 - 1.20 g/cm(ISO 1183, Method A)(s) 3.5.
11、3 Tensile Strength at Max Load, min 24 MPa(ISO 527-1 & ISO 527-2, 150 minimum x10 x 4.0 +/- 0.2 mm specimen,test speed: 50 mm/minute)(s) 3.5.4 Flexural Modulus, min 1.1 GPa(ISO 178, 80 x 10 x 4.0 +/- 0.2 mmspecimen use center section of specimen A, 2 mm/min test speed,64 mm support span)ENGINEERING
12、MATERIAL SPECIFICATIONWSS-M4D945-A1WP 3948-b Page 3 of 6 3.5.5 Shear Modulus at 23 EC 500 - 840 MPa(ASTM D 5279, forced constantamplitude, fixed frequency of 1 Hz+/- 15 %, strain level below 1 %.Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A.Specimen length between clamp
13、s 35 - 40 mm.Soak time at each temperature interval -3 minutes minimum)Additionally, a shear m odulus versus temperature curve shallbe plotted f or - 50 to + 150 EC temperature range, at 5 ECminimum intervals. The plotted curve must be withintolerance range granted on the original material approval
14、andit sha ll constitute the reference standard for materialssupplied to this specification and shall be kept on file atthe designated material laboratory and be available onrequest. (s) 3.5.6 Impact Strength, Izod, min(ISO 180/1A, 80 x 10 x 4.0+/- 0.2 mm specimen use centersection of specimen A, 10
15、specimensfor each test)3.5.6.1 At 23 +/- 2 EC 4.0 kJ/m3.5.6.2 At - 40 +/- 1 EC 1.0 kJ/m3.5.6.3 At - 15 +/- 2 EC 2.0 kJ/mThe test specimen must be conditioned for minimumof 6 hours at the above specified temperature priorto impact test. Low temperature testing shall bedone within the cold chamber, if
16、 not possible, testmay be conducted outside, but within 5 seconds.(s) 3.5.7 Heat Deflection Temperature, min tbd EC(ISO 75-1 & ISO 75-2, 80 x 10 x 4.0+/- 0.2 mm specimen use centersection of specimen A, flatwise,0.34 +/- 0.1 mm deflection. At 1.80 MPa)3.5.8 Heat Aging Performance(ISO 188, except 150
17、 +/- 50 airchanges/h, 1000 h at 130 +/- 2 EC.Unaged property values shall be determined at the time of the aged properties determination)3.5.9.1 Tensile Strength at MaxLoad Change +/- 25 %ENGINEERING MATERIAL SPECIFICATIONWSS-M4D945-A1WP 3948-b Page 4 of 6 3.5.9.2 Impact Strength, Izod Change +/- 25
18、 %(Test Method per para 3.5.6.1,specimens to be notched beforeheat aging)3.6 FOGGING(SAE J1756, 3 h at 100 EC heating, 21 EC coolingplate, post test conditioning 1 h)Fog Number, min 90Formation of clear film, droplets or crystals is cause for rejection.3.7 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, m
19、ax 100 mm/minuteThe specimen size required for material approval is 355 x 100 x 1.0+/- 0.1 mm (use specimen C) with a smooth surface.3.9 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specification
20、and/or performance specification. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.10 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasorigin
21、ally granted.Pri or to making any change in the properties, 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 notif
22、y Purchasing, Toxicology andthe affected Materials Engineering 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, regul
23、ations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSS-M4D945-A1WP 3948-b Page 5 of 6 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior a
24、pproval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineering
25、activity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtes t s
26、pecimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapproval, the material will be added to the Engineering Material ApprovedSource List.5. GEN
27、ERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the requirements of this specification.5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8.7E-5/ EC(ASTM E 831 TMA, temperature rangetbd EC)5.2 MOLD SHRINKAGE(ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mminjection molde
28、d specimen)5.2.1 Molding Shrinkage. After 48 h at 23 +/- 2 EC 1.2 - 1.4 %5.3 ELONGATION AT BREAK 27 %(Test Method according to para 3.5.3)5.4 HEAT DEFLECTION TEMPERATURE, min(ISO 75-1 & ISO 75-2, 80 x 10 x 4.0+/- 0.2 mm specimen use centersection of specimen A, flatwise,0.34 +/- 0.1 mm deflection. At 1.80 MPa). At 1.80 MPa 52 EC. At 0.45 MPa 98 EC5.5 HARDNESS, DUROMETER D 60(ISO 868, 15 s dwell)5.6 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSESPP-KD25ENGINEERING MATERIAL SPECIFICATIONWSS-M4D945-A1WP 3948-b Page 6 of 6
