1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 02 12 N-STATUS Replaced by WSS-M9P8-B L. Sinclair, NA 2007 06 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.14, 3.15 & 4 1988 10 06 Released SM/ER6258TC B. Hennessey Printed copies are uncontrolled Copyright 2010, Ford Global Technolo
2、gies, LLC Page 1 of 5 RUBBER PARTS, INTERIOR AND EXTERIOR WSD-M9P8-A PERFORMANCE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The performance characteristics defined by this specification may be used to evaluate the environmental resistance of visible rubber parts used either externally or in the passenge
3、r compartment. These may include weatherstrips, gaiters, boots and seals etc. The parts may be flock or anti-friction coated on areas specified on the Engineering Drawing. 2. APPLICATION This specification was released originally to be used in conjunction with basic material specifications to provid
4、e a coherent structure for all environmental testing of visible rubber parts. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 CONSTRUCTION As spe
5、cified on engineering drawing. 3.5 COLOR AND SURFACE The part shall be black or as specified on the engineering drawing. The surface shall be free of blisters, voids and any bloom unless otherwise specified on the engineering drawing. 3.6 FINISH As specified on engineering drawing 3.7 RESISTANCE PRO
6、PERTIES The following requirements shall be assessed on whole parts or sections of weatherstrip assemblies and must include all materials and constructions found within the parts, e.g., molded corners, bright inserts, bonded glass, flock coating, etc. Parts shall be tested to the interior or exterio
7、r requirements as shown on the engineering drawing. Parts such as some window seals may be both interior and exterior and shall be tested accordingly. Separate specimens are required for each test. ENGINEERING MATERIAL SPECIFICATIONWSD-M9P8-A Printed copies are uncontrolled Copyright 2010, Ford Glob
8、al Technologies, LLC Page 2 of 5 The parts as received and after being subjected to the exposures listed below shall conform to the following requirements: No evidence of color or gloss change greater than Rating 4 of the AATCC Gray Scale (10 step). No cracking, chalking, wrinkling, crazing, discolo
9、ration, iridescence, bloom, milkiness, separation or loss of embossment allowed. In addition, there shall be no evidence of shrinkage or incompatibility between materials of construction. Any successful attempt to separate the components of coated and/or composite parts must result in cohesive failu
10、re only. Any adhesive failure will be cause for rejection. When a weatherstrip assembly includes windlace/pinch weld retention systems additional samples shall be assembled to metal panels simulating production installation. After exposure according to para 3.7.1, 3.7.2 and 3.7.3, the loss of pull-o
11、ff effort shall not exceed 25% of the min original requirement specified on the engineering drawing or part performance specification. All assessments shall be carried out within 1 h of reaching room temperature. 3.7.1 Heat Aging (ASTM D 573) 3.7.1.1 30 minutes at 120 +/- 2 C 3.7.1.2 1000 h at 80 +/
12、- 2 C Change in Length (Weatherstrips only), max 300 mm long specimen, horizontal exposure. 3.7.1.3 30 minutes at 120 +/- 2 C 0.5% 3.7.1.4 1000 h at 80 +/- 2 C 0.5% 3.7.2 Humidity Exposure (14 d at 38 +/- 1 C, 95 - 100% R.H.) 3.7.3 Environmental Cycling Test 2 cycles. Each cycle shall consist of the
13、 following: 4 h at 100 +/- 2 C 4 h at 38 +/- 1 C, 95 to 100% R.H. 16 h at -40 +/- 1 C 4 h at 38 +/- 1 C, 95 to 100% R.H. 4 h at 100 +/- 2 C 16 h at -40 +/- 1 C ENGINEERING MATERIAL SPECIFICATIONWSD-M9P8-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.7.4
14、 Cold Flexibility No cracks or (FLTM BP 106-03, except breaks weatherstrips) Method for weatherstrips: Place a 300 mm length of weather-strip in a cold chamber at - 40 +/- 2 C for an exposure period of 4 h. While still in the cold chamber bend the weatherstrip around a similarly cold-conditioned 25
15、mm diameter mandrel. The bending operation should take less than 1 s. Coated or flocked weatherstrips should be bent with the coating on the outside. Examine for cracks with the unaided eye. 3.7.5 Salt Spray (Applicable to parts containing metal inserts) (ASTM B 117, 240 h) In addition to the above
16、requirements there shall be no evidence of red rust on metal parts. 3.7.6 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure B) 3.7.7 Staining After exposure in accordance with para 3.7.7.1 and 3.7.7.2, the material shall cause no stain in excess of specified AATCC rating (AATCC Scale for Tra
17、nsference of Color, 10 step). 3.7.7.1 Contact and Migration Staining of Paint (FLTM BP 153-01, Procedure A) Rating No migration staining 5 Slight contact staining 4 permitted 3.7.7.2 For anti-friction coated parts only, repeat test at 120 C +/- 2 C for 30 minutes with coating in contact with painted
18、 panel. 3.7.7.3 Staining by Water Extractables Rating (FLTM BP 153-01, Procedure B) No staining 5 3.7.8 Chemical Resistance (external parts only) Weatherstrips shall be resistant to solvents/cleaners normally used in cleaning operations and to fluids encountered during normal service. See para 5.1 a
19、nd 5.2. ENGINEERING MATERIAL SPECIFICATIONWSD-M9P8-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.8 ODOR, max Rating 2 (FLTM BO 131-01, interior parts only) 3.9 WEATHERING RESISTANCE 3.9.1 Exterior Parts After exposure in accordance with para 3.9.1.1, 3
20、.9.1.2 and 3.9.1.3, the material shall show no color change, bloom or iridescence in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). 3.9.1.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, irradiation 2000 h or as shown on the engineering drawing) 3.9.1.2 12
21、 Months Florida Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland) 3.9.1.3 24 Months Florida Rating 3 - 4 (FLTM BI 160-01, 5 south, direct weathering inland) 3.9.2 Interior Parts After exposure in accordance with para 3.9.2.1, and 3.9.2.2 the material shall show no color change, bloom or i
22、ridescence in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). 3.9.2.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, irradiation 1240 kJ/m2or as shown on the engineering drawing) 3.9.2.2 12 Months Florida Rating 4 (FLTM BI 160-01, 5 south, under glass) 3.10
23、 FOGGING (Interior parts only) (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 and 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.11 CROCKING, min Rating 4 (FLTM BN 107-01, Wet Method, interior parts only unless otherwi
24、se shown on the engineering drawing) ENGINEERING MATERIAL SPECIFICATIONWSD-M9P8-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 3.12 FRICTION INDEX (anti-friction coatings only), max 45 N or as specified on engineering drawing 3.13 FLAMMABILITY, max burn r
25、ate 100 mm/minute (ISO 3795, interior parts only unless otherwise shown on the engineering drawing) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 The following Chemical Resistance Tests shall be
26、carried out: WSK-M98P6-A Para 3.16 Resistance to Waxing and De- waxing Compounds 3.17 Resistance to Water Spotting 3.18 Resistance to Acid Spotting 3.21 Resistance to Windshield Washer Fluid 3.22 Fuel Resistance 5.2 For information on fluids and other materials required for use in this specification
27、 contact: Materials Laboratory 13/100 Body & Chassis Engineering Research and Engineering Centre Body Eng. Materials Laboratory Ford Motor Company Ltd Ford Motor Company Laindon, Basildon PO Box 2053 Essex SS15 6EE, England B&CE, Room 1289 Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
