1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 03 07 NB00E10043064125 Revised & Updated D. DiGregorio E. Rezendes1987 01 22 CDQ1-PR534351 Released E. Rezendes L. MoriartyWP 3948-a Page 1 of 9 SEALER, DIE CUT, POLYOLEFIN, HEAT CURING BONDABLE PATCH
2、ESB-M4G279-A1. SCOPEThe material defined by this specification is a heat activated extrudednon-porous olefin polymer blend sealer adhesive, patch.2. APPLICATIONThis specification was released originally for material used to bond andseal galvanized drain hole cover plates over electrocoated surfacesu
3、tilizing the primer and enamel ovens to cure the material thus providinga seal.3. REQUIREMENTS3.1 STATISTICAL PROCESSSuppliers must conform to the requirements of Ford Quality SystemStandard Q-101 A mutually acceptable Control Plan as describedtherein is required for material/source approval. Approp
4、riatestatistical 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/orthermal analysis of material/parts supplied to this sp
5、ecification.The IR spectra and thermogram established for initial approval shallconstitute the reference standard and shall be kept on file at thedesignated material laboratory. All samples shall produce IR spectraand thermogram that correspond to the reference standard when testedunder the same con
6、ditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on materials conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relativehumidity for 24 h prior to testing and tested under the samecontrolled conditions.3.4 DIMENSIONS As specified on the engineeri
7、ngdrawingNOT TO BE USED FOR NEW DESIGN2014 N Status No replacement named L. Sinclair, NAENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 2 of 93.5 DENSITY(ASTM D 297)The density for any one supplier shall be +/- 0.02 g/cm3, based onthe recorded weight of their original approved productio
8、n sample.Refer to para 5.3 for additional information.3.6 HARDNESS, Durometer “A“ 80 - 100(ASTM D 2240 - Reading after 15 s - Uncured State)3.7 ADHESION CHARACTERISTICS 100 % Cohesive FailureTest Method:. Pr epare test samples on galvanized steel and electrocoatedsubstrates and, minimum and maximum
9、bakes, per para 5.1 and 5.2. Evaluate adhesion by first making two parallel cuts, 25 mm apart,across the materia l. Loosen one edge between cuts and attempt topeel at 180 deg. Observe for any indication that the materialfails to adhere to substrates.3.8 LOW TEMPERATURE RESISTANCE No cracking or loss
10、 of adhesion (FLTM BV 101-02)Test Method: . Prepare test samples as described in para on all substrates andbake schedules per para. 5.1 and 5.2. Condition prepared panels for 4 h at - 30 + /- 1 C and slam a totalof 10 times.3.9 THERMAL CYCLE TEST No cracking or loss of adhesion Test Method: . Condit
11、ion panels prepared in para 3.7 for 24 h at 23 +/- 2 C. Subject the prepared panels to 5 cycles wit h each cycle consistingof:4 h at 88 +/- 1 C4 h at 38 +/- 2 C and 98 +/- 2 % relative humidity 16 h at - 30 +/- 1 C4 h at 38 +/- 2 C and 98 +/- 2 % relative humidity 4 h at 88 +/- 1 C16 h at - 30 +/- 1
12、 C. After completion of exposure cycle, evaluat e adhesion as describedin para 3 .7, step 2.ENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 3 of 93.10 CORROSION RESISTANCE, min 500 h(ASTM B 117)No sealer adhesion loss or corrosion extending from scribe or edgesTest Method:. Prepare t es
13、t samples as described in para 3.7 on all substrateslisted in para 5.1. Cut two parallel lines across the material, 25 mm apart, on allprepared panels to bare metal. Expose the panels to salt spray. After exposure, condition panels for 48 h at 23 +/- 2 C. Evaluate material adhesion as described in p
14、ara 3.7, step 2.3.11 DRAIN PLUG PUSH-OUT TEST, minThe minimum push-out force indicated shall be ob tained by all samplesin each substrate group when subjected to the following exposures:1) Normal, 72 h at 73 +/- 2 F 445 N2) Salt Spray, 500 h 445 N(ASTM B 117)3) Cold Condition, - 30 C 445 N4) After T
15、hermal Cycle 445 N5) Paint Sheet Metal Corrosion Test 222 N(FLTM BI 123-01)Sample Preparation:. Assemble drain hole cover plat e and sealer patch to electrocoatedfloor pan simulated panels by snapping tabs on plate into slotsin panel. Prep are six samples. Cure three samples at each bake schedulenot
16、ed in para 5.2 and Figure I. Bake samples in a horizontalposition. Condit ion salt spray test panels at 23 +/- 2 C for a minimum of48 h and a maximum of 52 h prior to conducting push-out test. Cut off cover plated retaining tabs being careful to avoid damageto cured sealer material, PRIOR TO CONDUCT
17、ING PUSH-OUT TEST.ENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 4 of 9Test Me thod: Using push-out test fixture provided by Ford MotorCompany, determine forc e required to break sealer bond between coverplated and floor pan si mulated panel. Test to be conducted using anInstron machin
18、e or equivalent at a jaw speed of 25 mm/minute (seeFigure II).NOTE: Record all the test values on data sheet.3.11.1 Sample PreparationTest M ethod: Place a 40 cm2 area section of uncuredpr oduction material on the substrate indicated. Positionpanel horizontally in a mechanical convection oven and ba
19、kein accordance with the condition described in para 5.2.3.12 WATER LEAK RESISTANCE No leaks permittedTest Method: . Assemble a production cover plate with uncured material into afloorpan simulated drain hole consisting of substrates in para 5. Bake assemblies in horizontal position at the schedules
20、 listed inpara 5. Allow the assemblies to cool to 23 +/- 2 C and then subject theassemb lies to a 2 h static water leak test using a 1.5 kPa headof water (see Figure III). The above test is to be perfor med after 500 h salt spray exposureper para 3 10.3.13 HEAT RESISTANCENo evidence of blistering, c
21、racking, charring or embroilment.Test Method:. Place a 40 cm area section of uncured production material to an2electrocoated panel per para 5. Bake the panel horizontally in a mechanical convection oven. Allow the panel to cool to 23 +/- 2 C and examine for any of theabove deleterious conditions.ENG
22、INEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 5 of 93.14 TACK TEST Slight tackiness permittedTest Method:. Overlap 25 mm of two 40 cm area sections of uncured production2 material. Plac e material, with 4.5 kg weight over the overlapped area,horizontally in a mechanical c onvection oven
23、at 60 +/- 1 C for 30minutes. Remov e material from oven and allow material with weight to coolto 23 +/- 2 C. After cooling, ribbons shall b e easily separated without materialcohesive failure.3.15 PEEL ADHESION STRENGTH, min 22 N/m (ASTM D 903)Pull rate 25 mm/minute (this test is to judge he at bond
24、ed strength ofpatch to galvanized floor pan plug).3.16 STORAGE STABILITYThe m aterial shall be stored at temperatures below 38 C, away fromal l sources of heat. Under these storage conditions, the minimumshelf life of the mater ial shall be 12 months. When these materialsare stored at temperatures b
25、elow 23 C, they shall be conditioned atroom temperature prior to application.3.17 FUNCTIONAL APPROVALMaterials 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 tom
26、aterial approval and release.3.18 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 changes in the properties composition,constr uction, color, processing or la
27、beling 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 Engineering activity of the proposed changesand obtain the
28、written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.ENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 6 of 9Substance restrictions imposed by law, regulations or Ford apply tothe materials addres
29、sed by this document. 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 fi
30、rst 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 reports, signed by aqualified and authorized representative of
31、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 approval of amateri al will be based on its performance to this sp
32、ecification and on anassessment of suitability for i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe mate rial data included herein is for information only and is not arequirements for the supp
33、lier.5.1 SUBSTRATES5.1.1 Galv anized Steel Meeting ESB-M1A59-A: Nominal 0.80 mmthick ness. Substrate phosphated and electrocoat primedmee ting ESB-M2P4-A performance requirements. Use currentproduc tion paints as identified by the responsible MaterialsEngineering Activity.5.2 PROCESS BAKE SCHEDULES5
34、.2.1 Minimum: 113 C for 8 min metal temperature 5.2.2 Maximum: 177 C for 20 min metal temperature5.3. DENSITY, typical 1.21 +/- .12 g/cm3(ASTM D 297)ENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 7 of 9ENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 8 of 9FIGURE IIDRAIN HOLE COVER PUSHOUT TESTENGINEERING MATERIAL SPECIFICATIONESB-M4G279-AWP 3948-b Page 9 of 9FIGURE IIIT.R.W. WATER TOWER FIXTURE TEST
