1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 05 17 NB00I10043054365 Released E.R. Rezendes N.E. LindsayWP 3948-a Page 1 of 6 SEALER, PRESSURE SENSITIVE, RUBBER/RESIN/ASPHALT, WSB-M4G108-BTWINE REINFORCED 1. SCOPEThe mate rial defined by this spec
2、ification is a pressure sensitive,rubber/resin/asphalt composition sealer which is extrude d in round sectionsand reinforced with a polyester/cotton twine. 2. APPLICATIONThis specification was released originally for material used for sealinggalv anized floor transmission covers. The polyester/cotto
3、n twinereinforcement facilitates the application for more effective sealing. 3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs 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. Appro
4、priatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.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
6、same 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.ENGI
7、NEERING MATERIAL SPECIFICATIONWSB-M4G108-BWP 3948-b Page 2 of 6 3.4 DIMENSIONS As specified on engineeringdrawings.3.5 REINFORCEMENTThe material properties of the reinforcing twine shall not vary fromth e originally approved production sample. Refer to para 5.3 foradditional information.3.6 SOLIDS,
8、min 99 %(ASTM D 2834, except heat at 100 +/-2 C for 3 h in a mechanical convectionoven)3.7 WEIGHT PER VOLUME(ASTM D 816)The weig ht tolerance for any one supplier shall be +/- 0.04 kg/L,based on the recorded weight of this originally approval productionsample. Refer to para 5.4 for additional inform
9、ation.3.8 NEEDLE PENETRATION 7 - 12 mm(ASTM D 1321, 150 g total load)3.9 YIELD STRENGTH, min 60 kPaTest Method: Yield cel ls consist of two 75 x 75 mm panels, preparedper para 5.1, one electrocoated steel panel and one oily galvanizedste el panel. To assemble, place two 8 mm diameter beads of sealer
10、equ idistant, 20 cm, from the center line of one panel. Cover withthe other panel and com press the cells 50 % for 1 minute per FLTM BU114-01. Condition the cell for 1 h at 23 +/- 2 C. Determine theyield strength of the y ield cells in tension by pulling in a tensilemachine with a jaw separation rat
11、e of 25 mm/minu te. Report peak loadand failure mode.3.10 FLEXIBILITY No crackingTest Method: Condition an “as received“ 100 x 8 mm sample on releasepaper at -30 +/- 1 C for 16 h. Bend 180 degrees around a temperatureconditioned 25 mm diameter mandrel. Repeat on a sample aged for 24h at 100 +/- 2 C.
12、3.11 WATER LEAK RESISTANCE No water leaksTest Assembly Preparation: A 275 x 8 mm length of sealer shall beapplied in a “U“ configuration to a 100 x 100 x 0.8 mm oily,galvanized steel panel prepared per para 5.1. A second 100 x 100 x0. 8 mm electrocoated steel panel prepared per para 5.1 shall beplac
13、ed over the sealer material. Place assembly in a tensile machineand apply 215 N (30 % compression) force to compress. Hold at the215 N compression for 1 minute. Remove force and allow to recoverfor 5 minutes.ENGINEERING MATERIAL SPECIFICATIONWSB-M4G108-BWP 3948-b Page 3 of 6 Test Method: Condition t
14、he assembly at 23 +/- 2 C for 1 h. Standthe assembly on edge with the opening of the “U“ channel up. Fillthe channel to a depth of 100 m (approximately 13 mm from the topedge) with colored water and let stand for 24 h. Observe for anyevidence of water leaks.Note: Stand the test assembly on a sheet o
15、f white paper for easierwater leak detection.3.12 WATER ABSORPTION, max 5 %(FLTM BV 117-01, Method A, 8 h soak time)3.13 CORROSION RESISTANCE, min 500 h (ASTM B 117)No loss of adhesion or blistering of the material and no evidence ofcorrosion on the metal surface when subjected to salt spray.Test Me
16、thod: Apply two 300 x 8 mm beads of sealer to galvanizedpanels prepared per para 5.1. Pass a 2.2 kg roller over the panelper ASTM D 1000. Condi tion the panel 1 h at 23 +/- 2 C. Subject tosalt spray exposure.3.14 PAINT STAINING No migration stain(SAE J2020, 500 h, white andmetallic enameled panels)3
17、.15 CLEANABILITY Shall be easily removedTest Method: Prepare enameled panels as describ ed in FLTM BI 103-02,Method “C“, using currently released white produ ction paint. Age theenameled panels for 16 h at 38 +/- 1 C. Apply a 100 x 8 mm sample ofsealer with finger pres sure to the enamel panels. Con
18、dition for 1 hat 23 +/0 2 C. Remove the sealer sample and wip e panels with mineralspirits (e.g. naphtha).3.16 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.17 FOGGING(FLTM BO 116-03)Fog Number, min 60The formation of droplets or coalescence into a clear film is causefor rejection.ENG
19、INEERING MATERIAL SPECIFICATIONWSB-M4G108-BWP 3948-b Page 4 of 6 3.18 SAG RESISTANCE3.18.1 Horizontal, max 3 mm3.18.2 Vertical, max 3 mm3.18.3 Inverted No loss of materialTest Method: Apply a 50 x 8 mm bead along the c enter line ofthree panels for each substrate prepared per para 5.1.Scribe panels
20、to mark the initial material location.Condition the panels with the material in the aboveorien tations for 1 h at 23 +/- 2 C. Immediately afterconditioning, place pan els in a mechanical oven at 150 +/- 2C for 30 minutes maintaining panel orientation d uring baking.Co ndition panel at 23 +/- 2 C for
21、 1 h maintaining panelori entation. Determine the sag by measuring the materialmovement below the scribe mark.3.19 ELONGATION3.19.1 As Received, max 10 %3.19.2 Aged at 70 +/- 2 C for 24 h, max 15 %Test Method: Remove a 8 x 1000 mm sample of sealer from itsbaking paper at a speed to simulate the back
22、ing paper removalin an assembly plant. Measure the length of the sealersample initially and after removal from the baking paper.% elongation = L2 - L1_ x 100L1L1 = Initial LengthL2 = Final Length3.20 ODORNo ob jectionable or irritating odors, both as received and afterstorage.3.21 STORAGE STABILITYT
23、he material shall be stored at temperatures bel ow 38 C away from allsources of heat and sunlight. Under these storage conditions, theshelf life o f the material shall be 3 months. There shall be nodif ficulty in removing the material from its backing paper whenstored under these conditions. When th
24、ese materials are stored atte mperatures below 23 C, they shall be conditioned at roomtemperature prior to ap plication. Adequate conditioning permits thematerial to obtain its optimum application properties.ENGINEERING MATERIAL SPECIFICATIONWSB-M4G108-BWP 3948-b Page 5 of 6 3.22 FUNCTIONAL APPROVAL
25、Materials being evaluated for initial approval to the specificationshall be subjected to a production trial. Functional trial resultsshoul d be available to Design and Materials Engineering prior tomaterial approval and release.3.23 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or ma
26、nufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respectto these properties shall be clearly designated on the engineeringdrawing.3.24 SUPPLIERS RESPONSIBILITYAll materials supplied to this spec
27、ification must be equivalent inal l characteristics to the material upon which approval wasoriginally 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 suchchang
28、e s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify 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 cod
29、e identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this spec
30、ification must have prior approval 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 aff
31、ected Materials Engineeringactivity 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
32、 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 on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Materia
33、l ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONWSB-M4G108-BWP 3948-b Page 6 of 6 5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 SUBSTRATESNominal panel dimensions are 100 x 300 x 0.8 mm.Elec
34、tr ocoat Primed Steel Panel: Current production steel panelprepared per ESB-M2P4 performance specification, using currentpr oduction paints as identified by the Materials EngineeringActivity.Galvanized Steel: Current production galvanized steel with surfaceprecoated with stamping lubricant to be spe
35、cified by the responsibleMaterials Engineering activity.5.2 COLOR Black or as specified on theengineering drawing5.3 REINFORCEMENT5.3.1 Material Polyester/cotton twine5.3.2 Weight 465 tex5.3.3 Tensile Strength, min 130 N(500 mm/minute)5.3.4 Diameter 0.75 +/- 0.02 mm5.4 WEIGHT PER VOLUME 1.80 +/- 0.04 kg/L(ASTM D 816)
