1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 15 Revised and Retyped, was 8 pages1976 04 05 SM/EQ 8062 TP ReleasedWP 3948-a Page 1 of 5 SOUND ABSORPTION AND HEAT BARRIER MAT, GLASS FIBRE BASE SD-M99G9506-A1. SCOPEThe material defined by this sp
2、ecification is a fine fib ered, resilient matof fibrous glass, bonded with t hermosetting resin and a sprayed-on coatingof polychloroprene rubber on the visible surface and edges.2. APPLICATIONThis material was originally released for thermal insulation and soundabsorption between the engine a nd th
3、e drivers cab of commercial vehicles.3. REQUIREMENTS3.1 GLASS FIBER LAYER3.1.1 Density 48 kg/m3 +/- 10 %(ASTM C 167)3.1.2 Thickness 50 +/- 2 mm(ASTM C 167)Or as specified on Engineering Drawing.3.1.3 Average Fiber Diameter 0.0065 mm +/- 10 %Test Method: Calculate the average fiber diamet er of minim
4、um50 fibers, chosen at random, measured under a mi croscope witha magnification of 1000.3.1.4 Binder Content 5.0 +/- 2 %(FLTM EU-BV 50-10, dry content minusash content)3.2 FACINGThe facing consists of a sprayed-on coating of p olychloroprene rubberon the visible surface and edges.3.2.1 ColorBlack or
5、 as specified on Engineering Drawing.3.2.2 Thickness 0.3 - 0.5 mm(ASTM D 645)ENGINEERING MATERIAL SPECIFICATIONSD-M99G9506-AWP 3948-b Page 2 of 5 3.3 FINISHED SAMPLE3.3.1 Splitting Resistance, min 3 NTest Method: (See Figure 1)1) 100 x 100 mm test specimens shall be bonded to twospeci men holders ea
6、ch and conditioned for 24 hours atroom temperature (use adhesive S-M2G4610-A).2) Deter mine splitting resistance in a tensile testingmachine at a rate of pull of 25 mm/minute.3) Determine splitting resistance on specimensa) Originalb) After exposure to 98 +/- 2 % relative humidity and38 +/ - 2 C for
7、 7 days and followed by 1 hour atroom temperature (23/50).3.3.2 Adhesion of Coating to Glass Fiber MatAny atte mpt to remove the coating shall result in cohesivefailure of the glass fiber mat.3.3.3 Sound Absorption According to Figure 2(ASTM C 384)Note: Five samples sha ll be tested with the polychl
8、oroprenecoating facing to the source of noise.Samples for measuring in the small tube shall be die cut fromthe mi ddle of the sample needed for the large tube aftermeasuring the latter.3.3.4 Flammability Self-extinguishing(FLTM EU-BN 24-2)3.3.5 Thermal Conductivity, max 0.053 W/K m(ASTM C 177-71 or
9、ASTM C 518-70, basedon a mean temperature of test of 100 C)3.3.6 Harmful ContaminantsThe material shall be free from harmful contaminants andshall not cause skin rash (dermatitis) or irritation toexposed handlers in normal production operations.ENGINEERING MATERIAL SPECIFICATIONSD-M99G9506-AWP 3948-
10、b Page 3 of 5 3.4 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 properties, composition,constr uction, color, processing or labeling of the ma
11、terialorig 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 written approval
12、 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 this document. The restrictions aredefined in Engineering Materials Specifi
13、cation 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 first obtain an expression of interest from theaffec ted Purchasing, Design and Mat
14、erials 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 all the requirements of th
15、is 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 intended processes and/or appl
16、ications. 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 Ford Motor Company)Minimum 12 months.5.2 HEIGHT IN STORAGEAs recommended by supplier.ENGINEERING MATERIAL SPECIFICATIONSD-M99G9506-AWP 3948-b Page 4 of 5 ENGINEERING MATERIAL SPECIFICATIONSD-M99G9506-AWP 3948-b Page 5 of 5
