1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 15 Revised and Retyped, was 14 pages1981 06 12 B/453222 TP Added Flammability 3.4.131974 05 24 SM/ET 0749 TP ReleasedWP 3948-a Page 1 of 8 MULTI-PLY DEADENER PAD, MOULDED SK-M99G9508-A1. SCOPEThe ma
2、terial defined by this specification is a moulded, heat resistantmulti-ply deadener pad based on a plastic heavy layer with a polyurethane-et her-foam backing covered with a PVC foil. In the area of edges andholes, the assembly is compressed and sealed against moisture.2. APPLICATIONThe moulded part
3、 is used for so und deadening in the engine compartment, atcowl panel upper.The part is mechanically fixed to painted metal.3. REQUIREMENTSThe material shall be conditio ned for a minimum of 24 h at 23 +/- 2 C and50 +/- 5 % relative humidity prior to test.3.1 HEAVY LAYER3.1.1 ColorGrey to black or a
4、s specified on Engineering Drawing.3.1.2 Density 2.2 +/- 0.3 g/cm3(ASTM D 792, Method A-1)3.1.3 Thickness 3.0 +/- 0.5 mm(Slide gauge)3.1.4 Mass 7.5 +/- 0.8 kg/m23.1.5 Shore Hardness “A“ 85 +/- 5(ASTM D 2240, 15 s dwell)3.1.6 Moisture Absorption, max 15 %Test Method:1) Weigh a test piece of 100 x 100
5、 mm nearest to 0.5 g.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 2 of 8 2) Condition the sample in suspended positio n at 98 +/- 2 %relative humidity and 38 +/- 2 C for 24 hours.3) Afte r 1 hour at room temperature, weigh the samplenearest to 0.5 g and determine increase of weight
6、in %based on original weight.3.1.7 Cold Resistance No crackingTest Method:1) Place a steel ball of 38 mm diameter, mass 225 g and a100 x 100 mm piece of material under t est for 4 hoursat - 40 +/- 1 C in a cold box.2) Place the test piece horizontally on a base plate andnormal to the direction on im
7、pact.3) While still in t he cold box, drop the steel ball to themiddle of the test piece from a height of 1000 mm.3.1.8 Tensile Strength(ASTM D 412, Die C)3.1.8.1 Original, min 230 N/cm23.1.8.2 Elongation, min 70 %3.1.8.3 After Humidity Ageing(48 h at 38 +/- 2 C and 98 +/- 2 %relative humidity)Maxim
8、um - 15 % based on measured original value.3.1.8.4 After Heat Ageing(14 days at 70 +/- 2 C, 1 hat room temperature)Maximum - 15 % based on measured original value.3.1.8.5 After Immersion in Engine Oil(48 h Oil No. 1 ASTM D 471)Maximum - 15 % based on measured original value.3.1.9 Tear Strength, min
9、100 N/cm(ASTM D 624, Die C)3.2 PU FOAM3.2.1 Color AnyENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 3 of 8 3.2.2 Density 100 - 150 kg/m3(ASTM D 2406-68)3.2.3 Hardness Index 110 +/- 40 N(ISO 2439-1972, Procedure A)3.3 VINYL PLASTIC FILM3.3.1 ColorBlack or as specified on Engineering Dr
10、awing.3.3.2 Thickness 0.12 +/- 0.03 mm(FLTM EU-BN 50-7)3.3.3 Density 1.27 +/- 0.10 g/cm3(ASTM D 792, Method A-1)3.3.4 Tensile Strength(ASTM D 412, Die C)3.3.4.1 Original, min 10 N/mm23.3.4.2 Elongation, min 250 %3.3.5 Tear Strength, min 150 N/cm(ASTM D 624, Die C)3.4 ASSEMBLY REQUIREMENTS3.4.1 Dimen
11、sionsAs specified on Engineering Drawing.3.4.2 Total Mass of Moulded Part (kg) 2.75 +/- 10 %3.4.3 Heat StabilityThe finished part shall show no evidence of delamination, novisib le shrinkage or distortion, respectively it shall notwarp to an extent that would affect its use in ultimateassembly. Furt
12、hermore, it shall show no change in appearancewhen compared with the original unaged part.Test Method: The finished part or a representative sectionof the part shall be mo unted as in the vehicle and subjectedto a temperature of 90 +/- 2 C in a mechanically convectedair-dry oven for 24 hours. Examin
13、e after cooling to roomtemperature.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 4 of 8 3.4.4 Environmental CyclingThe finished part shall show no evidence of delamination, novisib le shrinkage or distortion respectively, it shall notwarp to an extent that would affect its use in ult
14、imateassembly. Furthermore, it shall show no change in appearancewhen compared with the original unaged part.Test Method: The finished part or a representative sectionof the part shall be mo unted as in the vehicle and subjected3 ti mes to the following cycle in the sequence indicatedbelow:16 h at 3
15、8 +/- 2 C and 98 +/- 2 % relative humidity8 h at 80 +/- 2 C3 h at - 30 +/- 2 CExamine after cooling to room temperature.3.4.5 Cold Resistance after AgeingNo cracking.Test Method:1) Expose the finis hed part or a representative section ofit at 90 +/- 2 C for 120 hours.2) After cooling to room tempera
16、ture, store the part and asteel ball of 30 mm in dia. and 225 g for 4 hours at- 40 +/- 1 C in a cold box.3) Place the test p art with the heavy layer facing outwardhorizontally on a base plate and normal t o the directionof impact.4) While still in t he cold box, drop the steel ball to themiddle of
17、the test part from a high of 1000 mm.3.4.6 Moisture Absorption, max 10 %Test Method:1) Weigh finished part nearest to 5 g.2) Condition the part in suspended positio n at 98 +/- 2 %relative humidity and 38 +/- 2 C for 24 hours.3) After 1 hour at room temperature weigh the part nearestto 5 g and deter
18、mine increase of weight in % based onoriginal weight.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 5 of 8 3.4.7 Mildew ResistanceThe ma terial shall be free from mildew and malodor. Thereshall be no visible changes evident after drying.Test Method:1) Cut from finishe d part a piece o
19、f 100 x 100 mm and soakwith distilled water.2) Pla ce test piece in a beaker glass of one litercapacity, and cover tightly with a lid.Store at 35 +/- 2 C for 14 days.3.4.8 Peel AdhesionNo PVC foil peel-off without tearing of foam.3.4.9 Resistance of Coating to Various Test ReagentsHeavy layer or PVC
20、 foil shall not dissolve, exhi bit tackinessor delaminate when rubbed lightly for 15 seconds with acotton cloth soaked with each of the following t est reagents.Use a separate specimen for each test reagent.Test Reagents:1) Oil No. 1, ASTM D 4712) Brake fluid, ESEA-M6C1001-A3) Sulphuric Acid (10 % b
21、y weight in distilled water)4) Ford Longlife coolant (50 % by weight in distilledwater)5) Waxing compound, EU-M9G21-A6) Dewaxing compound, EU-B5B8000-A3.4.10 Acoustic Overall Efficiency(FLTM EU-BV 60-3, based on 14 mm total thickness)According to attached curve.3.4.11 QualityThe material shall be of
22、 uniform quality, free from foreignmaterial and properties detrimental to normal pr oduction use.It shall not cause excessive soiling of handlers in normalproduction use.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 6 of 8 3.4.12 Health Hazards and OdorThe material must not contain a
23、ny ingredients (m atter) which,und er normal production conditions could lead to healthhaza rds such as skin rash or irritation (dermatitis),irr itation of the mucous membranes, difficulties inbreathing, etc.The material shall be free from objectionable odors both asreceived and after storage.3.4.13
24、 Flammability, max 250 mm/minute(ISO 3795)3.4.14 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must beequivalent in all chara cteristics to the material upon whichapproval was originally granted.Pr ior to making any change in the properties, composition,construction, color, pr
25、ocessing or labeling of the materialoriginally approved und er this specification, whether or notsuch c hanges affect the materials ability to meet thespecification requirements, the Supplier shall notifyPurchasing, Toxicology and the affected Material s Engineeringactiv ity of the proposed changes
26、and obtain the writtenapproval of the Materials Engineering activity. Test data,test samples and a new code identification are to besubmitted with the request.Substance restrictions imposed by law, regulations or Ford,ap ply to the materials addressed by this document. Therestrictions are defined in
27、 Engineering MaterialsSpecification 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 t
28、ed 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 wi
29、th 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 i
30、ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 7 of 8 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 6 months when stored between 5 C and 28 C.5.2 WEIGHT IN STORAGEAs recommended by supplier.ENGINEERING MATERIAL SPECIFICATIONSK-M99G9508-AWP 3948-b Page 8 of 8
