1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 08 14 N-STATUS Replaced by WSS-M9P9-A K. Mueller 2004 06 23 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.21 front, rear and center. In addition to the following requirements all parts made with this material must conform to the requir
2、ements of WSD-M9P8-A (or WSB-M9P8-A2 if a foamable hot melt adhesive is used for weatherstrip adherence). 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producer
3、s must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 COLOR Black, Clear, or per print 3.5 FILM THICKNESS (For dense and sponge rubber) Must have a continuous film, min 10 micrometers 3.6 COLOR STABILITY No objectionable color change of samples tested fo
4、r 601 kJ/m2 per SAE J1885 (interior parts), 1000 h per SAE J1960 (exterior parts), and two years Florida (exterior FLTM BI 160-01 direct exposure, interior FLTM BI 160-01 under glass). Minimum rating of 4 per AATCC grey scale. No cracking, chalking, iridescence, bloom, wrinkling, separation or disco
5、loration allowed. ENGINEERING MATERIAL SPECIFICATIONWSB-M2D49-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 5 3.7 SOLVENT RESISTANCE, min Rating 4 Test Method: A mechanically driven ASTM Textile Crockmeter or equivalent, standard crockmeter cloth and AATC
6、C Chromatic Scale as described in FLTM BN 107-01. The head shall be under a 900 +/- 25 g normal load. Cover the abrasion head with a double thickness of cloth with the fill direction parallel to the direction of rubbing. Note: A fresh sample of cloth must be used for each test. Install a 150 mm sect
7、ion of weatherstrip so that it is centered under the abrasion head. Clamp the baseplate to the bed of the crockmeter to prevent movement during the test. With the abrasion head resting on the weatherstrip, apply exactly 1 mL of petroleum naphtha, Windex, and ArmourAll, to the cloth at the point wher
8、e it contacts the weatherstrip. Test each solvent separately. A hypodermic syringe or pipet may be used for this purpose. Subject the coated weatherstrip to 10 complete rubbing cycles (one cycle consists of one stroke of the abrasion head forward and back). The time elapsed from the application of t
9、he solvent to the completion of the required cycles shall be no more than 20 s. Remove the weatherstrip and examine for coating removal. Remove the crockmeter cloth and report any transference of color from the test specimen to the cloth by using the AATCC grey scale chart 1 to 5 scale. 3.8 SOAP AND
10、 WATER RESISTANCE (FLTM BN 107-01) The coating shall not be removed or show any adverse effects when rubbed 60 cycles 900 +/- 25 g load with a cloth saturated with a 1 to 5 ratio of liquid soap (ESB-M1B9-A) to water. 3.9 OZONE RESISTANCE, min Rating 0 (FLTM BP 101-01, Procedure A, Die C) 20% Elongat
11、ion For the sponge roof side weatherstrip do not mandrel wrap the part, instead, place a 3.2 mm spacer under the primary seal lip and deflect the lip to produce intimate contact with the spacer, by employing a simple clamping device, throughout the entire ozone exposure. ENGINEERING MATERIAL SPECIFI
12、CATIONWSB-M2D49-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 5 3.10 PAINT STAINING, min Rating 4 - 5 Prepare panels 75 x 115 mm per FLTM BI 103-02, using ESB-M6J141-A primer and the currently released white body enamel. Panels must be dated and shall be
13、used within 60 days. Prepare assemblies to achieve good contact to paint panel. Rate using AATCC chart on scale of 1 to 5. 3.10.1 Ultraviolet Exposure, min Rating 4 Slight contact stain is permitted. Test Method: Expose the assembly for 601 kJ/m2per SAE J1885. Remove the weatherstrip and expose the
14、enameled surface to the same light source for 301 kJ/m2. Rate the panel after the final exposure. 3.10.2 Simulated Paint Repair, min Rating 4 Slight contact stain is permitted. Test Method: Expose the assembly at 121 +/- 2 C for 1 h. Cool to 23 +/- 2 C then remove the clamp. Separate the assembly by
15、 pulling apart rapidly by hand and rate the panel. 3.10.3 Paint Surface Staining Rating 4 (FLTM BP 153-01) 3.11 COLD FLEXIBILITY No cracks or loss of adhesion Test Method: Condition samples (300 mm in length) of the coated weatherstrip for a minimum of 4 h in a cold chamber maintained at -40 C. In t
16、he case of door weatherstrips and luggage compartment sections, the specimen shall be bent sharply 180 back upon itself, with the coating on the outside and examined for cracks. 3.12 AGED ADHESION 3.12.1 Adhesion to Dense and Sponge Rubber Good adhesion is indicated by the film breaking and resistin
17、g removal or stripping from the rubber. Good adhesion is also indicated by a film which offers considerable resistance to stripping and breaks at the bond line when an attempt is made to strip it from the rubber. ENGINEERING MATERIAL SPECIFICATIONWSB-M2D49-A2 Printed copies are uncontrolled Copyrigh
18、t 2007, Ford Global Technologies, LLC Page 4 of 5 3.12.1.1 Aged Coating Adhesion to Rubber No loss of film adhesion after 601 kJ/m2 per SAE J1885 (interior parts) or 1,000 h per SAE J1960 (exterior parts) and then tested to the following conditions. No visible evidence of coating failure such as fla
19、king or peeling or as described above. Test Method: A hand driven ASTM Textile Crockmeter (FLTM BN 107-01) with a modified abrasion head shall be used for this test. The abrasive agent shall be 320 grit grinding paper securely bonded to the abrasion head. (Metallurgical quality adhesive backed grind
20、ing paper has been found satisfactory.) The head shall be under a 900 +/- 25 g normal load. . Apply a strip of grinding paper to the abrasion head. A fresh strip must be used for each test. . Install a 150 mm section of weatherstrip so that the lip of the weatherstrip is centered beneath the abrasio
21、n head. Adjust the spacer bar to obtain flat contact between the weatherstrip and the abrasion head. If necessary, the spacer bar thickness may be varied to accomplish the required surface contact. . Clamp the base plate to the bed of the crockmeter to prevent movement during the test. . Subject the
22、 coated weatherstrip to 10 complete abrasion cycles (1 cycle consists of 1 stroke of the abrasion head forward and backward). The test shall be conducted at a uniform rate of one cycle per approximately 1 s and shall be completed in 10 s. . Remove the weatherstrip and examine the abraded area with a
23、 2X magnifying glass for any evidence of adhesion failure of the coating. 3.13 ABRASION RESISTANCE (FLTM BN 107-01, Part C) 3.13.1 Dense Rubber Weatherstrips No visible coating failure at 2X magnifying glass after 500 cycles. 3.13.2 Sponge Rubber Weatherstrips No visible coating failure at 2X magnif
24、ying glass after 300 cycles. ENGINEERING MATERIAL SPECIFICATIONWSB-M2D49-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 5 3.14 COEFFICIENT OF FRICTION (ASTM D 1894, substrate paint panel, per para 3.10) 3.14.1 Static, max 1.1 3.14.2 Dynamic, max 0.9 3.15 H
25、UMIDITY EXPOSURE (14 d at 40 +/- 2 C and 97 +/- 3% relative humidity, 300 mm specimen, horizontal exposure) No evidence of color or gloss change greater than 4 - 5 as measured on the AATCC Gray Scale; also no cracking, chalking, crazing or loss of adhesion. 3.16 ENVIRONMENTAL CYCLING TEST (300 mm sp
26、ecimen, horizontal exposure) 2 cycles, each cycle to consist of the following: . 4 h at 100 +/- 2 C . 4 h at 38 +/- 1 C and 95 - 100% 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 +/- 1C No evidence of color or gloss ch
27、ange greater than 4 - 5 as measured on the AATCC Gray Scale; also no cracking, crazing, chalking or loss of adhesion. 3.17 FREEZE (ICE RELEASE) CHARACTERISTICS OF 35 N WEATHERSTRIPS, max (FLTM BP 122-01) 3.18 SCUFFING (FLTM BN 108-04, Crockmeter Scuff, test coating using the appropriate size dense r
28、ubber of 70 +/- 5 durometer A) 30 cycles Scuffhead A There shall be no loss of coating. There shall be no evidence of raising or peeling of the coating from the substrate. 3.19 ABRASION RESISTANCE USING A VIBRATING TEST RIG 1,000 cycles (FLTM BP 119-01) No visible wear-through on either the paint pa
29、nel or the coated weatherstrip. Also, no transfer of black rubber onto the painted panel. 3.20 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 designated on the engineering drawing.
