1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 06 Revised and Retyped1994 10 10 EPOO310451465000 Released: A2 added1987 09 11 SM/EQ 6010 TP ReleasedWP 3948-a Page 1 of 6 SEALER, BUTYL RUBBER, PROFILED, SPOT ESK-M4G292-AWELDABLE, HEAT CURINGSEALE
2、R, BUTYL RUBBER, PROFILED, SPOT ESK-M4G292-A2WELDABLE, HEAT CURING1. SCOPEThe materials defined by these specification are solvent free sealers basedon butyl rubber. They are die cut from extruded, laminated sheeting, heatcuring, and heat meltable. They have pressure sensitive adhesive on oneside co
3、vered by release paper or foil. The other side i s covered by a verythin PE sup port film for handling. After curing this film does notinterfere with the adhesion of the butyl sealer to the metal surface.ESK-M4G292-A is spot weldableESK-M4G292-A2 is not weldable2. APPLICATIONTh e specification ESK-M
4、4G292-A was released originally for materials forsealing the front fender at cross member upper and is applied to oiledsurfaces in body assembly, and ESK-M4G292-A2 was originally released forsealing gaps at liftgate hinges.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirem
5、ents 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 reduced.3.2 INFRARED SPECTROPH
6、OTOMETRY 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 reference standard and shall be kept on file at thede
7、signated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONESK-M4G292-A/A2WP 3948-b Page 2 of 6 3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herei
8、n 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.3.4 DIMENSIONS As specified on Engineeringdrawing3.5 COLOR Black3.6 SOLIDS, min 99.0 %(
9、FLTM BV 150-10)3.7 ASH, max(FLTM BV 150 -10)ESK-M4G292-A 30 %ESK-M4G292-A2 36 %3.8 THICKNESS 0.6 +/- 0.1 mm or as specified on(ISO 4593) Engineering Drawing3.9 DENSITY at 20 C 1.3 +/- 0.5 g/cm3(ISO R 1183, Method A)3.10 PENETRATION at 20 C(ASTM D 5, needle 2.5 g, 1.5 N total weight force, 5 s dwell
10、time)If the finished part does not allow the preparat ion of specimens, thesupplie r is required to provide, together with the Initial SampleRep ort, specimens of same material and equivalent manufacture usedfor the finished part. Samples for control and routine checks shallbe submitted as required
11、by Quality Control.3.10.1 Original (in 0.1 mm) ESK-M4G292-A: 5 - 8 mm 3.10.2 After Ageing (in 0.1 mm) ESK-M4G292-A2: 5 - 8 mm(14 d at 35 +/- 2 C)3.11 COLD RESISTANCE AFTER AGEINGNo loss of adhesion or chippingTest Method:1) Appl y 250 x 40 x 0.6 +/- 0.1 mm pieces of test material in themi ddle to 30
12、0 x 100 x 0.8 - 0.9 mm test panels, preparedaccord ing to FLTM BZ 150-11, “Normal Grade“ and press downlightly.ENGINEERING MATERIAL SPECIFICATIONESK-M4G292-A/A2WP 3948-b Page 3 of 6 2) Ex pose separate test assemblies according to FLTM BV 150-05,table 2:a) min curing cycleb) max curing cycle3) Expos
13、e test assemblies in a mechanically convected air dry ovenat 80 +/- 2 C for two weeks.4) After cool ing to 23 +/- 2 C expose test assemblies and bendingfixture (see FLTM BV 153-4, except 100 mm mandrel) in a cold boxat - 30 +/- 1 C for 4 hours.5) While still in the cold box bend test asse mblies wit
14、hin 2 secondsaround the 100 mm mandrel through an angle of 90 degrees.3.12 HEAT RESISTANCE AFTER AGEINGNo loss of adhesion or chipping.Test Method:1) Specimen preparation according to 3.11, te st method, section 1-3.2) Pr oceed as outlined under FLTM BV 153-2, Method C, clause 6,mandrel diameter 100
15、 mm.3.13 FLOW RATETest Method:1) Preparation of test assemblies according to 3.11, test method,section 1, except test material to 250 x 20 x 0.6 +/- 0.1 mm.2) After 10 minutes at 23 +/- 2 C expose test assemblies at an angleof 45 degrees to the horizontal in a mechanically convected airdry ov en mai
16、ntained at 120 +/- 2 C for 30 minutes and with thelongit udinal axis of the strip in the horizontal (see FLTMBV 153-11, fig. 1).3.14 FLAMMABILITY AND CORROSION (Only ESK-M4292-A)(FLTM BV 129-2, Method A, except use sealing stripof 600 x 20 x 0.6 +/- -0.1 mm. Immediately afterwelding separate the wel
17、ded parts using a testfixture according to FLTM BV 159-01, fig. 4.Examine after 48 h at 23 +/- 2 C)No burning, no corrosion.ENGINEERING MATERIAL SPECIFICATIONESK-M4G292-A/A2WP 3948-b Page 4 of 6 3.15 CORROSION RESISTANCETh e material shall protect the test panel from corrosion. Nocorrosion or bliste
18、ring at the borderline sealer/EC/steel.Test Method:1a) For ESK-M4G292-A: Test panel preparation according to FLTMBV 159-02, Metho d A, except use sealing strip of 600 x 20 x 0.6+/- 0.1 mm, weld spot distance of 40 mm.1b) For ESK-M4G292-A2: except without welding. Specimens to bechanged while followi
19、ng preparation.2) After 2 hours at 23 +/- 2 C wash, phospha te and electrocoat testassemblies under normal production conditions.3) Exp ose separate test assemblies according to FLTM BV 150-05,table 1, phase 2 and 3:a) min curing cycleb) max curing cycle4) After 24 hours at 23 +/- 2 C expose test as
20、semblies to a saltspray fog according to ASTM B 117 for 480 hours.5) Sep arate welded assemblies using a test fixture according toFLTM BV 159-01, fig. 4 and examine.3.16 WASH AND PHOSPHATING SOLUTION RESISTANCENo evidence of dissolution or lifting from panel.Test Method:1) Specimens preparation acco
21、rding to 3.15, test method, section 1.2) After 2 hours at 23 +/- 2 C wash and phosphate test assembliesunder normal production conditions.3.17 SHEAR STRENGTH3.17.1 At 23 +/- 2 C, min 15.0 N/cm23.17.2 At 90 +/- 2 C, min 3.5 N/cm23.17.3 At - 30 +/- 1 C, min 150.0 N/cm2Test Method: FLTM BV 1 54-03, Met
22、hod B. Preparation of testspecimens according to Section A except use sealing strip of0.6 +/ - 0.1 mm thickness. Minimum and maximum heat curingcycle according to FLTM BV 150-05, table 1. Adh esion failurepermitted.ENGINEERING MATERIAL SPECIFICATIONESK-M4G292-A/A2WP 3948-b Page 5 of 6 3.18 PEEL STRE
23、NGTH3.18.1 At 23 +/- 2 C, min 18.0 N/cm3.18.2 At 90 +/- 2 C, min 8.0 N/cm3.18.3 At - 30 +/- 1 C, min 70.0 N/cm Test Method: FLTM BV 1 54-03, Method C. Preparation of testspecimens according to section A, except use sea ling strip of0.6 +/ - 0.1 mm thickness. Minimum and maximum heat curingcycle acco
24、rding to FLTM BV 150-05, table 1. Adh esion failurepermitted.3.19 WETTINGThe enam el shall form a continuous film over the visible edges ofsealing strip. Discoloration or staining permitted.Test Method: Specimens preparation according to 3.15, test method,section 1 an d 2, except test panels 350 x 5
25、0 x 0.8 - 0.9 mm andsea ler strip of 340 mm. Proceed as outlined under FLTM BV 153-08,Method A, section 2-7, except without wet on wet.3.20 QUALITYThe material shall be of uniform quality, free f rom foreign materialsand properties detrimental to normal production use.3.21 SUPPLIERS RESPONSIBILITYAl
26、l 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, composition,constr uction, color, processing or labeling of the materialorig inally approved under this specif
27、ication, 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 written approval of the Materials Engineeringactivity. Test
28、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 document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL
29、SPECIFICATIONESK-M4G292-A/A2WP 3948-b Page 6 of 6 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 expression of interest from theaffec ted
30、 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 lity, demonstratingful l compliance with
31、 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 on anassessment of suitability for int
32、ended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 STORAGE STABILITY(From date of receipt at FMC)Minimum 6 months when stored between 5 C and 28 C.
