1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes/Revisions 2010 05 19 N-STATUS Replaced by WSS-M9P10-A G. Eaton, NA 1999 04 27 Revised Rev. Para 3.7, 5; Comp. Updte B. Hennessey D. Whyte 1997 01 24 Activated M. Trapp D. WhyteWP 3948-a Page 1 of 8 WEATHERSTRI
2、P, FLOCKED RUBBER, WINDOW GLASS RUN WSB-M8H13-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a flocked unsupported rubber weatherstrip. 2. APPLICATION This specification was released originally for material used as a weatherstrip in glass run channels where th
3、e structure provides continuous support when the weatherstrip is inserted in a rolled section or metal extrusion. 3. REQUIREMENTS In addition to the following requirements all parts made from this material must conform to requirements of WSD-M9P8-A or WSB-M9P8-A2. 3.1 QUALITY SYSTEM REQUIREMENTS Mat
4、erial suppliers and part producers must conform to Quality System Requirements, QS-9000. Material specification requirements are to be used for initial qualification of materials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the relevant
5、Ford Materials activity and/or Ford Supplier Technical Assistance (STA) prior to production parts submission. Appropriate statistical tools must be used to analyze process/product data and assure consistent processing of the materials. Part producers using this material in their products, must use F
6、ord approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied t
7、o 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 correspond to the reference standard when tested un
8、der the same conditions. ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3948-b Page 2 of 8 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior
9、 to testing and tested under the same conditions unless otherwise specified. 3.4 COLOR Black or as specified on the (FLTM BI 109-01) engineering drawing 3.5 CONSTRUCTION AND COMPOSITION As specified on the engineering drawing The channel shall consist of an extruded rubber body. Designated areas sha
10、ll be coated with fiber flock deposited relatively perpendicular to the rubber surface and held with a suitable adhesive. In areas specified on the engineering drawings, the fiber density shall be sufficient to meet the specified wear requirements. 3.6 PHYSICAL PROPERTIES For physical property evalu
11、ation, all test specimens shall be die-cut from the finished part or surrogate specimens as agreed with the responsible Material Engineering Activity. 3.6.1 Tensile Strength, min 8.3 MPa (ISO 37/ASTM D 412, Die C, 500 mm/minute test speed) 3.6.2 Elongation at Break, min 200 % (Test according to para
12、 3.6.1) 3.6.3 Tear Strength, min 22 kN/m (ISO 34, Method B, Procedure (a)/ ASTM D 624, Die C) 3.6.4 Compression Set After Heat Aging (ISO 815, Method B, 25 % compression/ ASTM D 395) . 22 h at 100 +/- 2 C 25 % . 1000 h at 80 +/- 2 C 30 % ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3948-b Page
13、3 of 8 3.7 RESISTANCE PROPERTIES The following requirements shall be assessed on sections of the weatherstrip assembly and must include all materials and components of constructions, e.g., molded corners, bright inserts, etc. Separate specimens are required for each test. The parts as received and a
14、fter being subjected to the exposures listed below shall conform to the following requirements: . No evidence of color or gloss change greater than Rating 4 - 5 of the AATCC Grey Scale (10 step), unless otherwise specified. . No cracking, chalking, wrinkling, crazing, discoloration, iridescence, blo
15、om, milkiness, separation or loss of embossment allowed. . In addition, there shall be no evidence of shrinkage or incompatibility between materials of construction. . Any attempt to physically separate composite weatherstrips must result in cohesive failure only. Any adhesive failure will be cause
16、for rejection. All assessments shall be carried out within 1 h of reaching 23 +/- 2 C, unless otherwise specified. 3.7.1 Heat Aged (ISO 188/ASTM D 573, 1000 h at 80 +/- 2 C) . Tensile Strength Change, max +/- 25 % . Elongation Change, max - 30 % 3.7.2 Heat Aging (ISO 188/ASTM D 573, 300 mm specimen,
17、 horizontal exposure) Change in Length, max . 30 minutes at 120 +/- 2 C 1.0 % . 1000 h at 80 +/- 2 C 1.0 % 3.7.3 Hardness, Durometer “A“, After +/- 5 Heat Aging (ISO 868/ASTM D 2240, 70 h at 70 +/- 2 C) ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3948-b Page 4 of 8 3.7.4 Humidity Exposure Eval
18、uate (14 days at 38 +/- 2 C and appearance 95 - 100 % relative humidity, 300 mm specimen, horizontal exposure) 3.7.5 Environmental Cycling Test Evaluate (300 mm specimen, horizontal appearance exposure) 2 cycles, each consisting of the following: . 4 h at 100 +/- 2 C . 4 h at 38 +/- 1 C and 95 - 100
19、 % relative humidity . 16 h at - 40 +/- 1 C . 4 h at 38 +/- 1 C and 95 - 100 % relative humidity . 4 h at 100 +/- 2 C . 16 h at - 40 +/- 1 C 3.7.6 Cold Flexibility at - 40 C No cracks (FLTM BN 102-01, Procedure A, 25 x 200 mm specimen) 3.7.7 Water Absorption, max 2 % (ASTM D 1056, except use 50 mm l
20、ong specimens) 3.7.8 Resistance to Bleeding, min Rating 5 (FLTM AN 101-01) 3.7.9 Contact and Migration Staining of Paint (FLTM BP 153-01, Procedures A and B) After exposure, the material shall cause no stain in excess of specified AATCC rating (AATCC Scale for Transference of Color, 10 step). . Slig
21、ht contact staining permitted Rating 4 3.7.10 Paint Staining . Contact Stain Slight . Migration Stain None Test Method: Securely attach an extruded rubber specimen in intimate contact with light colored (white or blue), freshly enameled panels. Panels shall be prepared with currently released enamel
22、 per FLTM BI 103-02. Expose the assemblies for 488.8 kJ/m2 per SAE J1885 and 400 h per SAE J1960. Remove the weatherstrip specimen and re-expose the panel to the same light source for an additional 225.6 kJ/m2 per SAE J1885 and 200 h per SAE J1960. ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3
23、948-b Page 5 of 8 3.8 ADHESIVE PROPERTIES 3.8.1 Resistance to Solvents The adhesive shall be resistant to gasoline (ASTM Reference Fuel “B“) and naphtha or light mineral spirits. It shall not be removed nor be adversely affected, such as loss of flock, when rubbed severely for 3 minutes with individ
24、ual cloths saturated with each solvent. 3.8.2 Resistance to Detergents The adhesive shall not be removed nor be adversely affected, such as loss of flock, when rubbed severely for 3 minutes with a cloth saturated with a solution of equal parts of mild liquid soap and water. 3.8.3 Resistance to Crock
25、ing, min Rating 4 (FLTM BN 107-01, 1000 cycles) The adhesive employed to bond the flock shall be resistant to cleaning materials and shall not be adversely affected, such as loss of flock, when rubbed with individual cloths saturated with each of the following materials: . 1:1 Water and Mild Liquid
26、Soap . ASTM Reference Fuel “B“ . Naphtha or Light Mineral Spirits 3.9 FLOCK PROPERTIES 3.9.1 Fiber Size and Description (ASTM D 276 and D 1244) 3.3 dtex (100 % polyester, normal tenacity, solution dyed black, 0.76 +/- 0.13 mm staple length) or 396 den (44 tex) (100 % polypropylene, normal tenacity,
27、solution dyed black, 0.76 +/- 0.13 mm staple length) The fibers shall be squarely cut with not more than 5 % of shattered and/or hooked ends. The fibers shall be straight and not more than 15 % of the fibers shall be curved in excess of 0.05 mm. ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3948
28、-b Page 6 of 8 3.9.2 Flock Density, min 50 fibers/mm23.9.3 Pile Height, min 0.76 mm 3.9.4 Surface Fiber Deterioration 225.6 and 488.8 kJ/m2Ci-65 (FLTM BN 117-03, Method B) or 72 h and 120 h Xenotest 1200 (FLTM BO 150-02, Method C) No excessive deterioration of fibers or yarns after Xenon arc exposur
29、e. The resistance to deterioration of approved production material shall be equal to or better than that exhibited by the Fabric Proposal and Master Sample approved by the Materials Engineering Activity. 3.10 ASSEMBLY, SURFACE REQUIREMENTS 3.10.1 Abrasion (ASTM D 1242, Method B) The wear pattern sha
30、ll be compatible in appearance with the adjacent unabraded area and shall not show complete loss of flock and adhesive through to base rubber. The resistance to abrasion of production material shall be equal to or better than that exhibited by the master sample as approved for production and kept on
31、 file by the responsible Materials Engineering Activity. Original 1000 cycles Aged 7 days at 82 C 500 cycles Specimen Mounting: . Cut sample of a urethane foam strip, 57 x 13 x 5 mm, and adhere to aluminum mounting plate, using a suitable rubber based adhesive. . Take abrasion specimen 57 x 5 mm fro
32、m the lip area of weatherstrip. . Adhere weatherstrip specimen to center of urethane foam strip using a suitable rubber based adhesive. . Mount the aluminum plate on instrument and abrade weatherstrip using #240-E abrasive paper and 340 g load on carriage. ENGINEERING MATERIAL SPECIFICATION WSB-M8H1
33、3-A WP 3948-b Page 7 of 8 3.11 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance specification. All critical areas with respect to these properties shall be clearly de
34、signated on the engineering drawing. 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, color, proces
35、sing 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 proposed changes and
36、 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. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The regulations are defined i
37、n Engineering Materials Specification WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this specification 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 aff
38、ected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full complian
39、ce with all the requirements of this specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability
40、 for intended processes and/or applications. Upon approval, the material will be added to the Engineering Material Approved Source List. ENGINEERING MATERIAL SPECIFICATION WSB-M8H13-A WP 3948-b Page 8 of 8 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 The following chemicals should be used in the testing of the parts for chemical resistance: All purpose cleaner ESR-M14P4-A* Glass cleaner ESR-M14P5-A* *Or equivalent materials approved by Ford Customer Service Division.
