1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision92 03 16 NB00I10043054167 Released J. A. Straeffer AJSWP 3948-a Page 1 of 6 PERFORMANCE, NETTING ASSEMBLY, INTERIOR, WSB-M15P40-AMULTIPURPOSE1. SCOPEThis s pecification defines the performance requi
2、rements for interiornetting assemblies.2. APPLICATIONThis specification was released originally for materials used forcarg o/convenience nettings and includes associated bungee or cord, andwebbing materials.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Qua
3、lity SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR
4、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 established for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated materia
5、l 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 CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/
6、- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 APPEARANCE(FLTM BI 109-01)The col or, pattern, and finish shall match the approved sample, orshall be as specified on the engineering drawing.ENGINEERING MATERIAL SPECIFI
7、CATIONWSB-M15P40-AWP 3948-b Page 2 of 6 3.5 COMPOSITION As specified on the(ASTM D 629) engineering drawing3.6 ASSEMBLY CONSTRUCTION3.6.1 Netting Construction/Description/Yarn Size(ASTM D 1244)The mate rial defined by this specification is a netting ofgood quality and uniform composition intended fo
8、r interiorvehicle use. The netti ng may have a double selvedge on bothsides and must not unravel. The netting construction,dimensions, yarn and mesh size, strength, weight, and otherphys ical characteristics shall be as specified on theengine ering drawing and shall conform to the engineeringapprova
9、l sample with the following:Netting tolerances +/- 5 %3.6.2 Webbing Construction/Description/Yarn Size(ASTM D 3775/ASTM D 1244)The mate rial defined by this specification is a webbing ofgood quality and uniform composition intended for interiorvehicle use. The web construction, yarn composi tion, we
10、ight,breaking strength, and other physical characteristics shallbe as specified on the engineering drawing and shall conformto the engineering approval sample with the following:Webbing tolerances +/- 5 %3.6.3 Bungee or Cord Construction/Description/Yarn Size(ASTM D 1244)The material defined by this
11、 specification is br aided elasticor non-elastic cord of good quality and uniform compositionintended for interior vehicle use. The bungee or cordconstruction, yarn and elastomer composition, strength,elongation, size, and other physical characteris tics shall beas specified on the eng ineering draw
12、ing and shall conform tothe engineering approval sample with the following:Bungee or Cord diameter tolerance +/- 7 %Bungee or Cord elongation tolerance +/- 25 %Other Bungee or Cord tolerances +/- 5 %Specif ic netting assemblies as approved by the MaterialsEngineering Activity shall be listed in the
13、Approved SourceLis t. A bill of materials shall be kept on file for eachapproved netting assembly.ENGINEERING MATERIAL SPECIFICATIONWSB-M15P40-AWP 3948-b Page 3 of 6 3.7 BREAKING STRENGTH, min(ASTM D 1682, except as listed below,average of 5 specimens)3.7.1 Netting, Joint Breaking Strength As specif
14、ied onthe engineeringdrawingRequires two “J“ hooks 75 mm long fashioned from No. 8 gaugehard drawn steel spring wire or equivalent metal mounted insteel mand rils. The “J“ hooks shall be free of nicks orburrs to prevent damage to netting filament yarn.Distance between “J“ hooks shall be dependent up
15、on the meshsize of the netting and the ease of positioning the nettingon the “J“ hooks.The breaking of any netting leg shall not result inunravelling beyond the crossover.Test samples in each direction.3.7.2 Webbing As specified onthe engineeringdrawingWebbing shall be tested full width. Testing sha
16、ll beconducted in the warp direction only.3.7.3 Bungee As specified onthe engineeringdrawing38 mm initial jaw separation, 250 mm/minute jaw speed.Sample is elongated until break.3.7.3.1 Initial Modulus As specified on the(ASTM D 1682, 76 mm engineering drawinginitial jaw separation,550 mm/minute jaw
17、 speed)Elongate bungee through 40 % elongation and me asureforce.3.7.3.2 Elongation, %, min As specified on the(ASTM D 1682, 76 mm engineering drawinginitial jaw separation,550 mm/minute jaw speed)Elongat e bungee sample until force of 35 N isreached.Length (mm) at 35 N - 76 mmElongation % = x 10076
18、 mmENGINEERING MATERIAL SPECIFICATIONWSB-M15P40-AWP 3948-b Page 4 of 6 3.7.3.3 Modulus of Retention, As specified on%, min the engineeringdrawingTest Method: Mark off a 130 mm section, 50 mm fromthe ends of the 230 m m test specimen. Insert intotens ile testing machine and elongate the 130 mmsec tio
19、n by 20 % at a speed of 250 mm/minute andre cord the load (original modulus). Oven ageanother specimen at 9 0 +/- 2 C for 48 h and repeat20 % elongation (aged modulus).Aged ModulusModulus of Retention % = x 100Original Modulus3.7.3.4 Retained Breaking Strength, min225.6 kJ/m2 Ci-65 40 % retained(FLT
20、M BN 117-03, Method A) strengthor 72 h Xenotest 1200(FLTM BN 150-02, Method B)3.8 RESISTANCE TO CROCKING, min(FLTM BN 107-01, Evaluation Procedure 3)Dry and Wet Rating 4.03.9 RESISTANCE TO BLEEDING AND PERSPIRATION, min Rating 4.0(FLTM AN 101-01, Evaluation Procedure 3)3.10 RESISTANCE TO FADE, min(S
21、AE J1885, AATCC Evaluation Procedure 1)Sample shall be tested as part of a production assembly composite.In Vehicle Sunlight AATCC RatingExposure Level Test Exposure After ExposureMild exposure: Luggage 112.8 kJ/m2 Rating 4CompartmentModerate exposure: Seat 225.6 kJ/m2 Rating 4backs, door trim panel
22、sHeavy exposure: Exposed 488.8 kJ/m2 Rating 3load compartmentsThe mate rials shall be rejected if adhesive staining or othernon-uniform staining results from material incompatibility.ENGINEERING MATERIAL SPECIFICATIONWSB-M15P40-AWP 3948-b Page 5 of 6 3.11 HEAT AGING, min Rating 4.0(7 days at 100 +/-
23、 2 C, AATCCEvaluation Procedure 1)No individual yarn or combination of yarns shall exhibit fiberdeterioration or color tone change in excess of the above rating.3.12 ODOR, max Rating 2(FLTM BO 131-01/SAE J1531)3.13 FOGGING(FLTM BO 116-03, 3 h at 100 C)Fog Number, min 60The formation of droplets or c
24、oalescence into a clear film is causefor rejection.3.14 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.15 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to m
25、aking any change in the properties, 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
26、 andthe affected Materials Engineering 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 to
27、the materials addressed by this document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application. ENGINEERING MATERIAL SPECIFICATIONWSB-M15P40-AWP 3948-b Page 6 of 6 4.
28、APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activit
29、y. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification (testresu
30、lts, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
