1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1993 11 16 NE01E10127076108 Revised para 3 & updated E.Duda1987 08 13 CE3RRD836100E239 Revised and Retyped1983 11 16 CE3NRD863100E99 ReleasedWP 3948-a Page 1 of 4 GASKET, CELLULOSE FIBER, SBR BINDER
2、 ESE-M8G170-A1. SCOPEThe material defined by this specification is a high density materialconsisting of cellulose fibers and a suitably compounded styrene butadienerubber.2. APPLICATIONThis specification was released originally for material used for upper aircharger gasket where air and wa ter seali
3、ng at moderate flange-pressure andmoderate temperatures is required. This material is not recommended for oiland gasoline sealing applications.3. REQUIREMENTSAll tests shall be conducted in accordance with ASTM F 104 Type 7 materialunless otherwise specified. Test specimens are to be sel ected from
4、finishedgaskets when practicable.3.1 ORIGINAL PROPERTIES (All Thicknesses)3.1.1 Tensile Strength, min 13.0 MPa(ASTM F 152, Method B)3.1.2 Compressibility 15 to 25 %(ASTM F 36, Procedure B)3.1.3 Recovery, min 30 %(ASTM F 36, Procedure B)3.1.4 Creep Relaxation, max 45 %(ASTM F 38, Method “B“, 22 h at1
5、50 C 0.78 mm thick only)3.1.5 Density 1238 - 1526 kg/m3(ASTM D 297)3.1.6 Sealability, max 8.0 mL/h(ASTM F 37, 760 mm Hg, 1.7 MPa)3.1.7 Ignition Loss 40 to 48 %(ASTM F 495)ENGINEERING MATERIAL SPECIFICATIONESE-M8G170-AWP 3948-b Page 2 of 4 3.1.8 Surface Coating Must not stick orshow any evidenceof co
6、rrosion. Metal Plates. Aluminum to Aluminum. Aluminum to Steel. Steel to SteelTest Method : A 16 mm I.D. x 38 mm O.D. test specimen iscl amped between 2 discs of 13.5 mm I.D. x 51 mm O.D. metalplates ( maximum thickness 1.57 mm) backed by 12.7 mm steelplates. A 12.7 mm steel bolt is inserted through
7、 the hole anda n ut put on it. Tighten the bolt to 79 N.m. Heat theassembly to 150 +/- 3 C for 5 h. Remove and all ow to cool toroom temperature. The specimen shall come off the metalplat es without tearing and the metal plates must show noevidence of corrosion. 3.1.9 Compression Set, max 18 %(ASTM
8、D 395, METHOD “A“, 22 h at 70 C) 3.2 HEAT AGING (All Thicknesses)(ASTM D 573, 22 h at 150 +/- 3 C)3.2.1 Weight Change, max 5 %3.2.2 Compressibility 3 to 15 %(ASTM F 36, Procedure B)3.2.3 Recovery, min 50 %(ASTM F 36, Procedure B)Test Method: Place 3 weight change samples 25 x 50 mm xsamp le thicknes
9、s and 3 tensile change 13 x 100 mm x samplethickness or any sample size which is practicabl e between 100x 125 x 13 mm steel pla tes. Place in furnace set at 150 +/-3 C for 22 h.3.3 IMMERSION IN LIQUIDS(ASTM F 146)Thickness TensileImmersion Fluid Test Conditions Change, max Change, maxASTM #1 Oil 5
10、h at 150 +/- 3 C + 30 % - 50 %ASTM #3 Oil 5 h at 150 +/- 3 C + 75 - 76 %Coolant 24 h at boiling + 28 % - 78 %ESE-M97B44-A andwater 50/50ENGINEERING MATERIAL SPECIFICATIONESE-M8G170-AWP 3948-b Page 3 of 4 3.4 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may con
11、duct infrared and/or thermalanalysis of material/parts supplied to this specification. The IRspec tra and thermograms established for initial approval shallconstitute the reference standard and shall be kept on file at thedesignated material laboratory. All samples shall produce IR spectraand thermo
12、grams that correspond to the reference standard when testedunder the same conditions.3.5 CONDITIONING AND TEST CONDITIONSAll test values indicated herei n are based on material conditioned ina controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % rel ative humidityfor not less than 24 h prior to testin
13、g and tested under the sameconditions unless otherwise specified.3.6 STATISTICAL PROCESSSuppli ers must conform to the requirements of Ford Quality SystemStan dard Q-101. A mutually acceptable Control Plan as describedther ein is required for material/source approval. Appropriatestatistical tools mu
14、st be used to analyze process/produc t data so thatvariation in the final product is continuously reduced.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equ ivalent in allchar acteristics to the material upon which approval was originallygranted.Prio r to making any
15、 change in the properties, composition,construction, color, processing or labeling of the mater ial originallyapproved under this specificati on, whether or not such changes affectthe materials ability to meet the specification requirements, theSupplier shall notify Purchasing, Toxicology and the af
16、fectedMaterials Engineering activity of the proposed changes and obtain thewritten approval of the Materials Engineering activity. Test data,test sam ples and a new code identification are to be submitted withthe request.Substa nce restrictions imposed by law, regulations or Ford, apply toth e mater
17、ials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONESE-M8G170-AWP 3948-b Page 4 of 4 4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Materials
18、Engineeri ng activity. Suppliers desiring approval oftheir mat erials shall first obtain an expression of interest from theaffecte d Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringact ivity a completed copy of their
19、laboratory test reports, signed by aqualified and authorized repres entative of the test facility, demonstratingfu ll compliance with all the requirements of this specification (testresults, not nominal values), t he material designation and code number, andtest spec imens for Ford evaluation. Fords engineering approval of amateria l will be based on its performance to this specification and on anassess ment of suitability for intended processes and/or applications. Uponapproval, the material will be added to the Engineering Material ApprovedSource List.
