1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 05 12 Activated T. KochWP 3948-a Page 1 of 4 GASKET, AUTOMATIC TRANSMISSION FLUID AND CRUSH RESISTANT, WSP-M8G207-B3MINERAL/CELLULOSE FIBER FILLED WITH FULLY CURED NITRILEBINDER, MEDIUM DENSITY 1.15 g/cm31.
2、SCOPEThe mate rial defined by this specification is a high grade, multipurposega sketing material comprised of non-asbestos reinforcing compounds incombination with a fully cured nitrile rubber.2. APPLICATIONThi s specification was originally released for materials requiring goodautoma tic transmiss
3、ion fluid, and good dimensional stability. Thesemate rials exhibit superior crush resistance under high flange loading.Typical gasket applications include extension housing to case.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101
4、. 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 the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor
5、 Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The 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
6、sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 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 a
7、re valid for gasket material of 0.4 to 1.2 mmthickness. Test specimens are to be selected from finished gasketswhen practicable.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.
8、ENGINEERING MATERIAL SPECIFICATIONWSP-M8G207-B3WP 3948-b Page 2 of 4 3.4 ORIGINAL PROPERTIES3.4.1 Density, g/cm3 1.15 - 1.35(ISO 1183/ASTM D 297)3.4.2 Tensile Strength, MPa, min 12(ASTM F 152, Method A)3.4.3 Compressibility, % 12 - 27(ASTM F 36, Procedure A)3.4.4 Recovery, %, min 50(ASTM F 36, Proce
9、dure A)3.5 SEALABILITY, mL/h, max 2.5(ASTM F 37, 760 mm Hg fluidpressure Fuel A, 13.7 MPa flangeload)3.6 CREEP RELAXATION, %, max 60(ASTM F 38, Method B,22 h at 149 +/- 2 C).4 to .8 mm 60.8 to 1.2 mm 903.7 ADHESION AND CORROSION(FLTM BV 123-01)Heat Aged, 70 h at 150 C Adhesion Corrosion. Aluminum +
10、Aluminum 5 2. Cast Iron + Cast Iron 5 2. Cast Iron + Aluminum 5 23.8 DIMENSIONAL STABILITY(ASTM F 1087)3.8.1 Low Humidity, % Change, max(5 h at 100 +/- 2 C)AMD 0.4MD 0.33.8.2 High Humidity, % Change, max(22 h in water at 23 +/- 2 C)AMD 1.4MD 1.1ENGINEERING MATERIAL SPECIFICATIONWSP-M8G207-B3WP 3948-
11、b Page 3 of 4 3.9 HEAT AGING(ISO 188/ASTM D 573, 22 h at150 +/- 3 C)3.9.1 Compressibility, % 6 to 18(ASTM F 36, Procedure A)3.9.2 Recovery, %, min 40(ASTM F 36, Procedure A)3.9.3 Weight Change, % - 1 to + 1.03.10 RESISTANCE TO ASTM OIL NO. 1(ASTM F 146, 5 h at 149 +/- 2 C)3.10.1 Compressibility, % 1
12、3 to 233.10.2 Thickness Change, % 0 - 53.11 RESISTANCE TO ASTM OIL NO. 3(ASTM F 146, 5 h at 149 +/- 2 C)3.11.1 Compressibility, % 16 to 263.11.2 Thickness Change, % 0 - 103.12 RESISTANCE TO ASTM FUEL C + METHANOL(ASTM F 146, 22 h at 23 +/- 2 C,85 vol % Fuel C + 15 vol % methanol)3.12.1 Compressibili
13、ty, % 25 - 383.12.2 Thickness Change, % 0 - 263.12.3 Delamination Pass(Added for laminated materials)Te st Method: Firmly hold the sample at one point on acircula r mandrel and force slowly, but firmly, under fingerpressure to contact the full diameter of th e mandrel. Failureshall be any cracks, br
14、eaks, or surface separation ordelamination 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 503.13.2 Thickness Change, % 0 - 38Test Method: Immerse the sample in engine co
15、olantWSE -M97B44-B and distilled water (50:50 vol %). Use asuitable distillation of flask and a reflux condenser andreflux for 70 h at boiling temperature.ENGINEERING MATERIAL SPECIFICATIONWSP-M8G207-B3WP 3948-b Page 4 of 4 3.14 RESISTANCE TO CURRENTLYAPPROVED AUTOMATIC TRANSMISSION FLUIDS(ASTM F 14
16、6, 168 h at 150 C)3.14.1 Compressibility, % 15 to 253.14.2 Thickness Change, % + 1 to + 10 %3.15 SUPPLIERS RESPONSIBILITYAll materials supplied to this specificatio n must be equivalent in allcharacteristics to the material upon which approval was originallygranted.Prior to making any change in the
17、properties, composition,construction, color, processing or labeling of the material originallyapproved under thi s specification, whether or not such changes affectthe materials ability to meet the specification requirements, theSupplier shall notify Purchasing, Toxicology and the affectedMaterials
18、Engineer ing activity of the proposed changes and obtain thewritt en approval of the Materials Engineering activity. Test data,test sampl es and a new code identification are to be submitted withthe request.Substance restrictions imposed by law, regulations or Ford, apply tothe ma terials addressed
19、by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engi neering activity. Suppliers desiring approval ofthe ir materials shall first
20、obtain an expression of interest from theaff ected Purchasing, Design and Materials Engineering activity. Uponreq uest, the Supplier shall submit to the affected Materials Engineeringactivit y a completed copy of their laboratory test reports, signed by aqualified and authorized r epresentative of t
21、he test facility, demonstratingfull c ompliance with all the requirements of this specification (testresults, not nominal value s), the material designation and code number, andtes t specimens for Ford evaluation. Fords engineering approval of amaterial wi ll be based on its performance to this specification and on ana ssessment of suitability for intended processes and/or applications. Uponapp roval, the material will be added to the Engineering Material ApprovedSource List.
