1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1996 10 18 Revised Completely revised; Updated L. Rodigas1992 11 02 EP00E10176310000 Released L. RodigasWP 3948-a Page 1 of 6 POLYPROPYLENE (PP) HOMOPOLYMER, 20 % MINERAL/ WSK-M4D855-AGLASS FIBER FILLED/REINFORCE
2、D MOLDINGCOMPOUND1. SCOPEThe material defined by this specification is a 20 % filled/reinforced,with mixture of 10 % chalk and 10 % glass fiber, injecti on molding compoundbased on polypropylene homopolymer.2. APPLICATIONThis specification was released originally for material used for bigdimension h
3、eater blower wheels.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers must conform to Quality SystemRequirements, QS-9000. Material specification r equirements are to beused fo r initial qualification of materials. A Control Plan forong oing production verification
4、is required. This plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d Supplier Technical Assistance (STA) prior to production partssubmission. Appropriate statistical tools must be used to analyzepr ocess/product data and assure consistent processing of thematerial
5、s.Part producers using this material in their products, must use Fordapproved materials and must conform to 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 repre
6、senting 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 specification.The IR spectra and thermograms established for i nitial approval shallconst itute the referenc
7、e 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 same conditions.ENGINEERING MATERIAL SPECIFICATIONWSK-M4D855-AWP 3948-b Page 2 of 6 3.3 CONDITIONING AND TEST
8、 CONDITIONSAll test values indicated herein are based on ma terial conditioned ina c ontrolled atmosphere 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
9、 2 - 6 g/10 minutes(ISO 1133, 230 EC, 2.16 kg)(s) 3.4.2 Ash Content 13 - 17 %(ISO 3451/1, Method A, ash:calcium oxide CaO/glass fiber,1 h at 900 +/- 50 EC,test portion 1 to 2 g)Note: 15.5 % ash CaO/glass fiber corresponds approximatelyto 10 % chalk (CaCO3) and 10 % glass fiber.3.5 MOLDED TEST SPECIM
10、EN3.5.1 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 +/- 0.1 mm (ISO/DIS 294-3)C. 355 x 100 x 1.0
11、+/- 0.1 mm (ISO 3795)Test specimen A shall be molded using molding conditionsdefined in ISO 3167. Specimens with shorter dim ensions shallbe cut from the center of the specimen A. No annealingallowed.3.5.2 Density 1.035 - 1.065 g/cm(ISO 1183, Method A)(s) 3.5.3 Tensile Strength at Break, min 47 MPa(
12、ISO 527-1 & ISO 527-2, 150 minimumx 10 x 4.0 +/- 0.2 mm specimen,test speed: 5 mm/minute)(s) 3.5.4 Flexural Modulus, min 2.8 GPa(ISO 178, 80 x 10 x 4.0 +/- 0.2 mmspecimen (use center section ofspecimen A, 2 mm/minute test speed,64 mm support span)ENGINEERING MATERIAL SPECIFICATIONWSK-M4D855-AWP 3948
13、-b Page 3 of 6 3.5.5 Shear Modulus at 23 EC 0.85 - 1.25 GPa(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 ofspecimen A. Specimen lengthbetween clamps 35 - 40 mm Soaktime at each temperature
14、interval3 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 curves must be withintolerance range granted on the original material approval andit sha ll constitute the reference standa
15、rd 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 mmspecimen use center section ofspecimen A, 10 specimens for each test)3.5.6.1 At 23 +/- 2 E
16、C 3.0 kJ/m3.5.6.2 At - 40 +/- 1 EC 2.0 kJ/mThe test specimen must be conditioned for minimumof 6 h at the above s pecified temperature prior toimpact test. Low temperature testing shall be donewithin the cold chamb er, if not possible, test maybe conducted outside, but within 5 seconds.(s) 3.5.7 Hea
17、t Deflection Temperature, min 125 EC(ISO 75-1 & ISO 75-2, 80 x 10 x 4.0+/- 0.2 mm specimen use center sectionof specimen A, edgewise, 0.32 +/-0.01 mm deflection. At 1.80 MPa)3.5.8 Heat Aging Performance(ISO 188, except 150 +/- 50 airchanges/h, 1000 h at 140 EC +/- 2 EC.Unaged property values shall b
18、edetermined at the time of the agedproperties determination)3.5.8.1 Tensile Strength at Break +/- 25 %Change(Test Method per para 3.5.3)3.5.8.2 Impact Strength, Izod - 15 %Change, max(Test Method per para 3.5.6.1,specimens to be notched beforeheat aging)ENGINEERING MATERIAL SPECIFICATIONWSK-M4D855-A
19、WP 3948-b Page 4 of 6 3.6 FOGGING(SAE J1756, 3 h at 100 EC heating,21 EC cooling plate, post testconditioning 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, max 100 mm/minuteThe specimen size required for mater
20、ial approval is 355 x 100 x 1.0+/- 0.1 mm (use specimen C) with a smooth surface.3.8 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specification. All critical areas
21、 with respect tothese 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 prope
22、rties, 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 En
23、gineering 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 th
24、is document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSK-M4D855-AWP 3948-b Page 5 of 6 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activ
25、ity. Suppliers desiring approval ofthe ir 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 Engineeringactivity a completed copy of their laboratory test rep
26、orts, 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 specimens for Ford evaluation. Fords engineering approv
27、al of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below is provid
28、ed for clarification and assistancein meeting the requirements of this specification.5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5 - 15E-5/ EC(ASTM E 831 TMA, temperature range20 to + 100 EC)5.2 MOLD SHRINKAGE(ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mminjection molded specimen)5.2.1 Molding Shrinkage.
29、After 48 h at 23 +/- 2 EC 1.4 %5.2.2 Post Shrinkage(Separate specimens required foreach test). After 48 h at 80 EC 0.1 - 0.5 %. After 30 minutes at 120 EC 0.0 - 0.5 %5.3 HEAT DEFLECTION TEMPERATURE, min 127 EC(ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/-0.2 mm specimen use center section ofspecimen A, fla
30、twise, 0.34 +/- 0.1 mmdeflection. At 1.80 MPa)Al l specimens dry as molded. If not tested immediately aftermolding, specimens must be stored in a sealed, moisture-proofcontainer filled with silica gel.5.4 MODULUS OF ELASTICITY, min 3.4 GPa(ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4+/- 0.2 mm specim
31、en, test speed: 1 mm/minute)ENGINEERING MATERIAL SPECIFICATIONWSK-M4D855-AWP 3948-b Page 6 of 6 5.5 IMPACT STRENGTH, CHARPY(ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mmspecimen use center section ofspecimen A, 10 specimens for each test)5.5.1 At 23 +/- 2 EC 4.0 kJ/m5.5.2 At - 40 +/- 1 EC 3.0 kJ/mThe test s
32、pecimens must be conditioned for minim um of 6 hoursat the above specified temperature prior to impa ct test. Lowtemperature testing shall be done within the col d chamber, ifnot po ssible, test may be conducted outside, but within 5seconds.5.6 IMPACT STRENGTH, MULTIAXIAL(ASTM D 3763, 100 mm diameter x 3.2 mm thicksmooth surface injection molded specimen. Impactvelocity: 2.2 m/s for exterior, 6.6 m/s forinterior applications.)5.6.1 At 23 +/- 2 EC TBD J5.6.2 At - 15 +/- 2 EC TBD J5.7 RECYCLING CODEPP-(K+GF)20
