1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 04 13 NEO1E10127076125 Revised Para 3.7 E. Duda1993 06 17 NEO1E10127076091 Released E. DudaWP 3948-a Page 1 of 5 GASKET, FUEL AND OIL RESISTANT, NON-ASBESTOS WITH WSE-M8G207-B1FULLY CURED NITRILE RUBBE
2、R BINDER, MEDIUM HIGHDENSITY, 1.2 g/cm3, minGASKET, FUEL AND OIL RESISTANT, NON-ASBESTOS WITH WSE-M8G207-B2FULLY CURED NITRILE RUBBER BINDER, MEDIUMDENSITY, .87 g/cm3, min1. SCOPEThe materials defined by these specifications are high grade, multipurposegaske ting materials comprised of non-asbestos
3、reinforcing compounds incombination with a fully cured nitrile rubber. Material s B1 and B2 are twodifferent densities of the same formula. WSE-M8G207-B1 supercedesESE-M8G207-A.2. APPLICATIONThese specifications were origi nally released for materials requiring goodfue l, oil, coolant resistance, an
4、d good dimensional stability. Thesemate rials exhibit superior crush resistance under high flange loading.Typical gasket applications include front cover, water p ump, throttle body,intake plenums and manifolds, oil pump, water outlet, rear seal retainer,and fuel pump mounting gasket.WSE-M8G207-B1 c
5、overs a medium h igh density material suitable for use whereflange pressures vary from medium to high.WSE -M8G207-B2 covers a medium density material suitable for use whereflange pressures vary from low to high. It is also suit ed for applicationsrequiring higher initial conformability.3. REQUIREMEN
6、TS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements 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
7、the final product is continuously reduced.ENGINEERING MATERIAL SPECIFICATIONWSE-M8G207-B1/B2WP 3948-b Page 2 of 5 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The
8、 IR spectra and thermograms established for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.
9、3 CONDITIONING AND TEST CONDITIONSAll tests shall be conducted in accordance with ASTM F 104, Type 7materia l unless otherwise specified. The requirements of thisspecifi cation are valid for gasket material of 0.4 to 1.2 mmthickness. Test specimens are to be selected from finished gasketswhen practi
10、cable.Prior to testing the ma terial shall be conditioned in an oven at 100+/- 2 C for 1 h and allowed to cool to 23 +/- 2 C in a desiccatorcontaining anhydrous calcium chloride.3.4 ORIGINAL PROPERTIES B1 B23.4.1 Density, g/cm3 1.20 - 1.39 0.87 - 1.10(ISO 1183/ASTM D 297)3.4.2 Tensile Strength, MPa,
11、 min 13.5 9.0(ASTM F 152, Method A)3.4.3 Compressibility, % 15 - 30 28 - 42(ASTM F 36, Procedure A)3.4.4 Recovery, %, min 40 20(ASTM F 36, Procedure A)3.5 SEALABILITY, mL/h, max 2 3.5(ASTM F 37, 760 mm Hg fluidpressure Fuel A, 13.7 MPa flangeload)3.6 CREEP RELAXATION, %, max 60 70(ASTM F 38, Method
12、B,22 h at 149 +/- 2 C).4 to .8 mm 60 70.8 to 1.2 mm 90 100ENGINEERING MATERIAL SPECIFICATIONWSE-M8G207-B1/B2WP 3948-b Page 3 of 5 3.7 ADHESION AND CORROSION(FLTM BV 123-01)Heat Aged, 70 h at 150 C Adhesion Corrosion Adhesion Corrosion. Aluminum + Aluminum 5 2 5 2. Cast Iron + Cast Iron 5 2 5 2. Cast
13、 Iron + Aluminum 5 2 5 2B1 B23.8 DIMENSIONAL STABILITY(ASTM F 1087)3.8.1 Low Humidity, % Change, max(5 h at 100 +/- 2 C)AMD 0.4 0.4MD 0.3 0.33.8.2 High Humidity, % Change, max(22 h in water at 23 +/- 2 C)AMD 1.4 1.3MD 1.1 1.13.9 HEAT AGING(ISO 188/ASTM D 573, 22 h at150 +/- 3 C)3.9.1 Compressibility
14、, %, max 20 30(ASTM F 36, Procedure A)3.9.2 Recovery, %, min 40 30(ASTM F 36, Procedure A)3.9.3 Weight Change, %, max 1.0 1.03.10 RESISTANCE TO ASTM OIL NO. 1(ASTM F 146, 5 h at 149 +/- 2 C)3.10.1 Compressibility, % 18 - 28 30 - 403.10.2 Thickness Change, % 0 - 5 0 - 83.11 RESISTANCE TO ASTM OIL NO.
15、 3(ASTM F 146, 5 h at 149 +/- 2 C)3.11.1 Compressibility, % 18 - 28 30 - 403.11.2 Thickness Change, % 0 - 10 0 - 7ENGINEERING MATERIAL SPECIFICATIONWSE-M8G207-B1/B2WP 3948-b Page 4 of 5 3.12 RESISTANCE TO ASTM FUEL C + METHANOL(ASTM F 146, 22 h at 23 +/- 2 C,85 vol % Fuel C + 15 vol % methanol)B1 B2
16、3.12.1 Compressibility, % 23 - 38 37 - 473.12.2 Thickness Change, % 0 - 26 0 - 203.12.3 Delamination Pass Pass(Added for laminated materials)Test Method: Firmly hold the sample at one point on acir cular mandrel and force slowly, but firmly, under fingerpressure to contact the full diameter of the m
17、andrel. F ailureshall be any cracks, breaks, or surface separation ordelami nation at the approximate time (5 +/- 1 s) required toflex the specimen. Use 8 mm diameter mandrel.3.13 RESISTANCE TO COOLANT ANDWATER (50:50)(ASTM F 146)3.13.1 Compressibility, %, max 50 703.13.2 Thickness Change, % 0 - 30
18、0 - 30Test Method: Immerse the sample in engine coolantWSE-M97B44-B and distilled water (50:50 vol %). Use asuita ble distillation of flask and a reflux condenser andreflux for 70 h at boiling temperature.3.14 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent in
19、al 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 specification, whether or not suchchange s affect the materials abilit
20、y 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 data, test samples and a new code identification areto be submit
21、ted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSE-M8G207-B1/B2WP 3948-b Page 5 of 5 4. APPROVAL OF
22、MATERIALSMate rials defined by this specification must have prior approval by therespo nsible Materials Engineering activity. Suppliers desiring approvalof their materials shall first obtain an expression of interest from theaffect ed Purchasing, Design and Materials Engineering activity. Uponreques
23、t, 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, demonstratingfull compliance with all the requirements of this specification (testresults, not nomin
24、al values), the material designation a nd code number, andtest 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 ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
