1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Release/Revision 2010 03 04 N-STATUS No replacement named L. Sinclair, NA 1991 09 10 NB00I10043054123 Released D.Henrickson B.Ferns L.Moriarty WP 3948-a Page 1 of 5 WEBBING, POLYESTER, NEEDLE LOOM, MOCK SMOOTH ED
2、GE WSB-M7H44-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyester seat belt webbing woven with continuous filament yarn and finished selvages. Proper dyes and dyeing procedures shall be employed to provide acceptable colors, appearance, and physical prop
3、erties. Color stripping for redyeing of webbing rejected for color is not allowed. The webbing shall be of good quality and uniform construction. 2. APPLICATION This specification was released originally for material used for metal to metal type seat belts on 1993 vehicles. 3. REQUIREMENTS Test Meth
4、od Procedures: All webbing properties denoted by shall be tested in accordance with Federal Motor Vehicle Safety Standard No. 209. DE requirements listed in any of the following paragraphs are intended as maximum target values. Visual ratings will take precedence. 3.1 STATISTICAL PROCESS Suppliers m
5、ust conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously r
6、educed. 3.2 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 48 - 67 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.3 APPEAR
7、ANCE (FLTM BI 109-01) The color, pattern, and finish shall match the approved Design Center master sample, or shall be as specified on the engineering drawing. Note: This webbing is to be manufactured in a nine panel weave construction (not including the edges as panels). ENGINEERING MATERIAL SPECIF
8、ICATION WSB-M7H44-B WP 3948-b Page 2 of 5 3.4 THICKNESS 1.14 +/- 0.05 mm (SAE J882) 3.5 WIDTH Measured at less than 22 N load 3.5.1, min 47.0 mm 3.5.2, max 50.8 mm Measured at 9 790 N load 3.5.3, min 47.0 mm 3.6 COMPOSITION (ASTM D 629) Polyester 100 % 3.7 WEIGHT, min 5.7 kg/100 m 3.8 BREAKING STREN
9、GTH, min 27 140 N 3.9 ELONGATION, max 9 % at 11 120 N 3.10 RESISTANCE TO LIGHT, min 87 % of original (Retained breaking strength after 100 breaking strength weatherometer hours exposure without water spray) 3.11 RESISTANCE TO HEX BAR ABRASION, min 77 % of original (Retained breaking strength after 5
10、 000 breaking strength abrasion strokes - 2 500 cycles) 3.12 RESISTANCE TO BUCKLE ABRASION, min 20 560 N (Retained breaking strength after 5 000 abrasion strokes - 2 500 cycles) 3.13 RESISTANCE TO FADE (AATCC Evaluation Procedure 1) 3.13.1 Weatherometer, min (max) Rating 3 (3.4 DE) (100 h without wa
11、ter spray) 3.13.2 Xenon Arc, min (max) Rating 3 (3.4 DE) (SAE J1885, 225.6 kJ/m2) No individual yarn or combination of yarns shall fade, stain or exhibit any color tone change, nor shall the yarns change in hue or brightness in excess of the above ratings. 3.14 COLORFASTNESS TO CROCKING, WET AND DRY
12、, min (max) Rating 4 (4.3 DE) Note: Instrumental reading to be determined per FLTM BN 107-02, AATCC Evaluation Procedure 2. 3.15 COLORFASTNESS TO STAINING-BLEEDING, min (max) Rating 4 (4.3 DE) (FLTM AN 101-01, AATCC Evaluation Procedure 3) ENGINEERING MATERIAL SPECIFICATION WSB-M7H44-B WP 3948-b Pag
13、e 3 of 5 3.16 PERSPIRATION, min (max) Rating 4.5 (FLTM AN 101-01, AATCC Evaluation Procedure 3) (2.2 DE) 3.17 SPOTTING, min (max) (FLTM AN 101-01, AATCC Evaluation Procedure 3) 3.17.1 All colors - Water Rating 5 (1.8 DE) 3.17.2 For Light Colors Only Coffee Rating 5 (1.8 DE) Soap Solution (25 % Lux o
14、r equivalent) Rating 5 (1.8 DE) Motor Oil (SAE 30 W) Rating 5 (1.8 DE) Colors designated light or mutually agreed to by the supplier and Body Engineering must meet this spotting requirement. 3.18 SOILING AND CLEANABILITY, max (FLTM BN 112-04, light colors only) Soiling Loss in Reflection 38 % Cleana
15、bility Loss in Reflection 28 % Future color selections designated light or mutually agreed to by the supplier and Body Engineering, must also meet this soiling requirement. 3.19 PLIABILITY (FLTM BN 102-05) 3.19.1 Lateral (fill) direction 175 - 750 The webbing when flexed and tested with the prescrib
16、ed weight shall have the above reading of 175 - 750 units on the dial indicator face. Use a total of 50 g weight. Moving parts of the dial indicator add up to 20 g, that is, add a 30 g weight on top of the indicator. 3.19.2 Longitudinal (warp) direction, max 130 mm 3.20 FOGGING (Initial certificatio
17、n only for each color) (FLTM BO 116-03) Fog Number, min 60 The formation of droplets or coalescence into a clear film is cause for rejection. 3.21 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute ENGINEERING MATERIAL SPECIFICATION WSB-M7H44-B WP 3948-b Page 4 of 5 3.22 ADDITIONAL REQUIR
18、EMENTS Specific requirements for material and or manufactured parts shall be specified on the engineering drawing, Engineering parts specification and/or performance specifications. All critical areas with respect to these properties shall be designated on the Engineering drawing. 3.23 SUPPLIERS RES
19、PONSIBILITY 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 changes in the properties, composition, construction, color, processing or labeling of the material originally approved u
20、nder 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 obtain the written approval of the Materials Engineer
21、ing 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 restrictions are defined in Engineering Material specification WSS-M99P9999-A1,
22、unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 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 f
23、irst obtain an expression of interest from the affected 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
24、 of the test facility, demonstrating full compliance 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
25、 specification and on an assessment of suitability for intended processes and/or applications. Upon approval, the material will be added to the Engineering Material Approved Source List. ENGINEERING MATERIAL SPECIFICATION WSB-M7H44-B WP 3948-b Page 5 of 5 5. GENERAL INFORMATION The information given
26、 below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 INSTRUMENTED COLOR READINGS The instrument used for color difference measurements shall be either a spectrophotometer or a tristimulus colorimeter, and shall be capable of providing the following: Geometry 0/45 Observer 10 degree Specular Reflectance In (if an option) Illuminant D 65 Sample port size 25 mm (unless specified otherwise in test method)
