1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1990 03 13 NE01E10000474068 3.2.6 Revised 3.4 Added E. J. Duda1986 08 27 CE3QRD836100E210 3.2.2 Revised E. J. Duda1984 01 16 CE3NRD863100E105 ReleasedWP 3948-a Page 1 of 4 GASKET, STEEL CORE - COMPR
2、ESSED ESE-M8G168-ANONASBESTOS SHEET1. SCOPEThe material defined by this sp ecification consists of a nonasbestos sheetwith a sy nthetic rubber binder secured equally on both sides of a lowcarbon steel core. The assembly is coated with a barrier, anticorrosiveand antistick coatings.2. APPLICATIONThis
3、 specification was released originally for material used for thecylinder heads, exhaust manifol ds and carburetor to intake manifold gasketwhe re a material with high compressive strength at high temperatures isrequired.3. REQUIREMENTS3.1 CONSTRUCTIONConsists of a low carbon steel core with a sheet
4、consisting of syn-theti c elastomeric binders and nonasbestos reinforcing compoundsbonded or clinched to each side of the steel core. The assembly iscover ed with a barrier-anticorrosive - sealing antistick coat orcoatings.3.1.1 Steel CoreLow carbon steel, thickness as specified on engineeringdrawin
5、g.3.1.2 Nonasbestos Sheet and Synthetic Rubber BinderThe nonasbestos sheet s hall be plied uniformly and bonded orclinched to each side o f the steel core to meet requirementsof the application at the thickness specified on theengineering drawing.3.1.3 CoatingsThe assembly shall be coated with heat
6、stable no ncarbonizing,oil, c oolant, and gasoline resistant film to meet all therequirements of the application. The coatings a re applied tothe gasket surfaces and shall not be removable as acontinuous film.ENGINEERING MATERIAL SPECIFICATIONESE-M8G168-AWP 3948-b Page 2 of 4 3.2 FINISHED GASKETAll
7、tests shall be conducted in accordance with ASTM F 104,type 6 materials, unless otherwise specified.3.2.1 Immersion in LiquidsDistilled Water 22 h at boilingPermanent Antifreeze 48 h at boiling(ESE-M97B44-A and Water - 50/50)Af ter immersion in above fluids, as specified, thenonasbes tos sheet shall
8、 be firm and must not separate fromthe steel core.3.2.2 Original PropertiesCompressibility 8 - 18 %(ASTM F 36, 34.5 MPa load)Recovery, min 45 %3.2.3 Immersion in ASTM No. 1 Oil(ASTM F 146, 5 h at 149 C)Compressibility 6 - 17 %Recovery, min 40 %Thickness Change, max +5 %Weight Change, max +14 %3.2.4
9、Immersion in ASTM No. 3 Oil(ASTM F 146, 5 h at 149 C)Compressibility 9 - 18 %Recovery, min 45 %Thickness Change, max +10 %Weight Change, max +15 %3.2.5 Immersion in ASTM Fuel B(ASTM F 146, 5 h at 23 +/- 2 C)Compressibility 12 - 24 %Recovery, min 50 %Thickness Change, max 15 %Weight Change, max 11 %E
10、NGINEERING MATERIAL SPECIFICATIONESE-M8G168-AWP 3948-b Page 3 of 4 3.2.6 Air Aging(ASTM D 573, 22 h at 204 C)Compressibility 5 - 15 %Recovery, min 50 %Weight Change - 3 to + 7 %3.2.7 Surface Coating Must n ot stick or show any evidenceof corrosion. Metal Plates. Aluminum to Aluminum. Aluminum to Ste
11、el. Steel to SteelTest M ethod: A 15.9 mm I.D. x 38.1 mm O.D. test specimen isclamped 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 the ho le anda nut p ut on it. Tighten the bolt to 79 N
12、m. Heat the.assembly to 149 +/- 3 C for 5 h . Remove and allow to cool toroom temperature. The specimen shall come off the metalplat es without tearing and the metal plates must show noevidence of corrosion.3.3 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may
13、conduct infrared and/or thermalanalysis of material/parts supplied to this specification. The IRspectra 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 th er
14、mogram that correspond to the reference standard when testedunder the same conditions.3.4 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. Appropriat
15、estatistical tools must be used to analyze process/produc t data so thatvariation in the final product is continuously reduced.3.5 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equ ivalent in allchar acteristics to the material upon which approval was originallygranted
16、.ENGINEERING MATERIAL SPECIFICATIONESE-M8G168-AWP 3948-b Page 4 of 4 Prio r to making any change in the properties, composition,const ruction, color, processing or labelling of the materialorigi nally approved under this specification, whether or not suchchanges affect the materials ability to meet
17、the specificationrequirements, the Supplier shall notify Purchasing, Toxi cology and theaff ected Materials Engineering activity of the proposed changes andobta in the written approval of the Materials Engineering activity.Test data , test samples and a new code identification are to besubmitted wit
18、h the request.Substa nce restrictions imposed by law, regulations or Ford, apply toth e materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1, unlessa differ ent suffix (e.g., A2 or A3) is specified on the engineeringdocument for the
19、application.4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval oftheir mat erials shall first obtain an expression of interest from theaffecte d Purchasing, Design and Materials Engin
20、eering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivi ty its own laboratory report to the specification (test results, notnominal values), the material designation and code number, and testspecimen s for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
