1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Release/Revision Rev 01 2012 05 09 N Status No usage or replacement N. Benipal, NA 1989 01 18 SM/EQ0972TP Release M. Siewert Page 1 of 4 GASKET, ARAMIDE FIBERS AND NBR SMT5008GA8610 WSK-M8G221-A NOT TO BE USED FO
2、R NEW DESIGN 1. SCOPE: The material defined by this specification is a gasket material comprised of aramide fibers bonded with nitrile butadiene rubber (NBR). 2. APPLICATION: This specification was released originally for material used for intake manifold gaskets. 3. REQUIREMENTS: Note: All tests sh
3、all be conducted in accordance with ASTM F 104 Type 1 material unless otherwise specified. The requirements of this specification are valid for gasket material of 0.2 to 1.6 mm thickness. Test specimens are to be selected from finished gaskets when practicable. Prior to testing, the materials shall
4、be conditioned in an oven at 100 +/- 2 C for 1 hr and allowed to cool to 23 +/- 2 C in a desiccator containing anhydrous calcium chloride. 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein
5、 is required for material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or
6、thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that corres
7、pond to the reference standard when tested under the same conditions. ENGINEERING MATERIAL SPECIFICATION WSK-M8G221-A Page 2 of 4 3.3 ORIGINAL PROPERTIES 3.3.1 Density 1.55 - 1.85 g/cm3 (ASTM D 297) 3.3.2 Ignition Loss 25 to 35 % (ASTM F 495) 3.3.3 Tensile Strength, min 10 MPa (ASTM F 152 Method A)
8、3.3.4 Compressibility 5 - 12 % (ASTM F 36 Procedure A) 3.3.5 Recovery, min 45 % (ASTM F 36 Procedure A) 3.4 SEALABILITY, max t.b.e (ASTM F 37, Method A, ASTM Fuel A, 6.9 MPa flange load, 1.7 MPa internal pressure) 3.5 CREEP RELAXATION, max t.b.e (ASTM F 38, Method B, 22 h at 150 +/- 2 C) 3.6 ADHESIO
9、N AND CORROSION (FLTM BV 123-1) 3.6.1 After Heat Aging at 150 +/- 2 C Adhesion, max Rating 2 Corrosion, max Rating 2 3.6.2 After Aging in Humidity Cabinet Adhesion, max Rating 2 Corrosion, max Rating 2 3.7 HEAT AGING (ASTM D 573, 22 h at 150 +/- 2 C) 3.7.1 Weight Change 0 to + 2 % 3.7.2 Compressibil
10、ity 2 - 10 % 3.7.3 Recovery, min 45 % ENGINEERING MATERIAL SPECIFICATION WSK-M8G221-A Page 3 of 4 3.8 RESISTANCE TO ASTM OIL No. 1 (ASTM F 146, 5 h at 150 +/- 2 C) 3.8.1 Thickness Change 0 to + 5 % 3.8.2 Compressibility 5 - 12 % 3.8.3 Recovery, min 45 % 3.9 RESISTANCE TO ASTM OIL No. 3 (ASTM F 146,
11、5 h at 150 +/- 2 C) 3.9.1 Thickness Change + 2 to + 10 % 3.9.2 Compressibility 7 - 13 % 3.9.3 Recovery, min 50 % 3.10 RESISTANCE TO ASTM FUEL C + METHANOL (85 vol. % Fuel C + 15 vol. % methanol) (ASTM F 146, 22 h at 23 +/- 2 C) 3.10.1 Thickness Change + 15 to + 30 % 3.11 RESISTANCE TO COOLANT AND WA
12、TER (50:50) Test Method Immerse in engine coolant WSE-M97B44-D and/or approved coolant of affected model year (see para 5,1) and distilled water (50:50 vol. %) by using a suitable distillation flask and a reflux condenser for 70 h at boiling temperature. 3.11.1 Thickness Change + 2 to + 12 % 3.11.2
13、Compressibility 10 - 20 % 3.11.3 Recovery, min 40 % 3.12 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction
14、 color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the propo
15、sed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. ENGINEERING MATERIAL SPECIFICATION WSK-M8G221-A Page 4 of 4 Substance restrictions imposed by law, regulations or Ford, apply
16、 to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS: Materials defined by this specification
17、 must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Ma
18、terials Engineering activity its own laboratory report to the specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INF
19、ORMATION: The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved engine coolants for use in meeting the requirements to the specification. Materials Laboratory 13/100 Fluid Material Section
20、 Research and Engineering Centre Coolants/Greases Ford Motor Company Ltd Engine Engineering Laindon, Basildon PO Box 2053 Essex SS15, England 21500 Oakwood Boulevard Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
