1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1996 06 17 Activated J. Williams Y. AlanivaWP 3948-a Page 1 of 3 PERFORMANCE, HEEL PROTECTION PAD WSS-M15P37-B1. SCOPEThis specification defines the performance requirements for a vinyl, rubberor other plastics m
2、aterial heel protection pad.2. APPLICATIONThis specification was released originally for the high frequency weldableprotect ion pad materials used in the passenger compartment floor carpetassemblies.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers must conform to Q
3、uality SystemRequirements, QS-9000. Material specification r equirements are to beused fo r initial qualification of materials. A Control Plan forong oing production verification is required. This plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d Supplier Technic
4、al Assistance (STA) prior to production partssubmission. Appropriate statistical tools must be used to analyzepr ocess/product data and assure consistent processing of thematerials.Part producers using this material in their products, must use Fordapproved materials and must conform to a process con
5、trol plan whichhas been approved by STA and/or the relevant Materials Activity.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and thermograms establi
6、shed for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSA
7、ll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSS-M15P37-BWP 3948-b P
8、age 2 of 3 3.4 APPEARANCE(FLTM BI 109-01)Colour, surface and finish shall match the Master Trim Sample asapproved by the Design Department.3.5 HEAT AGING, min No Cracking(7 days at 90 +/- 2 C, ISO 105-A02/ Rating 4AATCC Evaluation procedure 1)3.6 COLD RESISTANCE(SAE J323 Method A, 24 h at 90 +/-2 C
9、preconditioning, 24 h at -30 Cand 6 mm mandrel)No evidence of cracking or delamination from substrate.3.7 THICKNESS (prior to molding), min 0.8 mm(ISO 4591)3.8 RESISTANCE TO ABRASION 7000 Cycles*(SAE J1530-A, 1000 g load, H 18 wheels)*Heel protection pads with ribbed construction are only required t
10、opa ss 4000 cycles provided that the ribs run parallel to thecenterline of the vehicle.After test, the specime n must not show any greater signs of abrasionthan the Master Sample approved by the Materials Engineeringactivity. In addition, molded parts equivalent to production driverheel pad s shall
11、exhibit no wearthrough of the heelpad after thiste st (samples to be taken from molded and/or welded carpetassemblies).3.9 RESISTANCE TO FADE, min(SAE J1885, AATCC Evaluation Procedure 1)Xenon Arc Exposure 112.8 kJ/m2 Rating 4The sample shall show n o change in color tone, gloss, or evidence ofspo t
12、ting and it shall be equal to or better than the Master Sampleapproved by the Materials Engineering activity.3.10 FOGGING(SAE J1756, 3 h at 100 C heating, 21 C coolingplate, post test conditioning 1 h and 16 h)Fog Number, min 70Formation of clear film, droplets or crystals is cause for rejection.3.1
13、1 ODOR, max Rating 2(FLTM BO 131-01/SAE J1351 with1 liter glass jars)ENGINEERING MATERIAL SPECIFICATIONWSS-M15P37-BWP 3948-b Page 3 of 3 3.12 WELDABILITYThe mat erial must be capable of being HF-welded to the currentrelea sed carpets without any difficulties and it must exhibit nofaults or defects a
14、fter welding.3.13 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.14 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas w
15、ith respectto these properties shall be clearly designated on the engineeringdrawing.3.15 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the proper
16、ties, composition,constr uction, color, processing or labeling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Eng
17、ineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by thi
18、s document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSThis specification is intended to define the performance and/or propertiesof finished parts or systems of combined materials. An EngineeringMaterial Approved Source listin g is not applicable for this specification.Produc t Engineering materials referenced in this document and/or theaffected engineering drawing, which require prior Engine ering approval, aresh own in the Engineering Material Approved Source List under thespecification cited.
