1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2010 03 04 N-STATUS No replacement named L. Sinclair, NA 2002 01 09 Activated J. Faunt Printed copies are uncontrolled Page 1 of 5 Copyright 2010, Ford Global Technologies, Inc. WEBBING, MEDIUM STRENGTH, HIG
2、H ELONGATION, LOAD LIMITING, WSS-M7H60-A WIDE CENTER SEVEN PANEL WEAVE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is seat belt webbing woven with either twisted or untwisted continuous filament yarns and finished selvages and may have a monofilament reinforceme
3、nt. Proper dyes and dyeing procedures shall be employed, the yarns may be spun dyed or the webbing may be piece dyed to provide acceptable color, appearance, and physical properties. A surface finish may be applied to enhance abrasion resistance and/or surface friction. Color stripping for redyeing
4、of webbing rejected for color is not allowed. The webbing shall be of good quality and uniform construction. 2. APPLICATION This specification was originally released for materials used in the manufacture of seat belts. This webbing acts as a load limiting device (similar to mechanical torsion bar b
5、ased retractor systems). 3. REQUIREMENTS In addition to the requirements listed herein, materials approved to these specifications must also meet all applicable requirements of marketplace National Standards such as C/FMVSS 209, ECE 16, ADR 4, JIS D4604, etc. Material specification requirements are
6、to be used for initial qualification of materials. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Quality System Requirements. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms established for initial approval shall
7、constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. ENGINEERING MATERIAL SPECIFICATION WSS-M7H60-A Page 2 of 5 Copyrigh
8、t 2010, Ford Global Technologies, Inc. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless
9、 otherwise specified. 3.4 APPEARANCE The color, pattern and finish shall match the initial construction approved by Design Center. 3.5 BREAKING STRENGTH, kN, min 24.75 (SAE J140, using 100 mm diameter jaws) 3.6 ELONGATION, %, range 11 - 18 (FMVSS 209, S5.1(c) 3.7 RESISTANCE TO FADE, min (SAE J1885,
10、ISO 105 A-02/AATCC Evaluation Procedure 1) 3.7.1 225.6 kJ/m2, all colors Webbing using spun dyed yarns Rating 4 Piece-dyed webbing Rating 3 3.7.2 488.6 kJ/m2, black only, all types Rating 3 No individual yarn or combination of yarns shall fade, stain or exhibit any color tone change, nor shall the y
11、arns change in hue or brightness in excess of the above ratings. 3.8 COLORFASTNESS TO CROCKING, WET AND DRY, min Rating 4 (FLTM BN 107-01, AATCC Evaluation Procedure 2) 3.9 COLORFASTNESS TO STAINING-BLEEDING, min Rating 4 (FLTM AN 101-01, AATCC Evaluation Procedure 2) 3.10 PERSPIRATION STAINING, min
12、 Rating 4 (FLTM AN 101-01, AATCC Evaluation Procedure 2) 3.11 SOILING AND CLEANABILITY (FLTM BN 112-08) The performance of production material shall be equal to or better than that exhibited by the sample originally approved for production by the Materials Engineering Activity. ENGINEERING MATERIAL
13、SPECIFICATION WSS-M7H60-A Page 3 of 5 Copyright 2010, Ford Global Technologies, Inc. 3.12 PLIABILITY (FLTM BN 102-05, ASTM D 747 (direct reading at 60 degrees, 12.7 mm span length) Pliability requirements will vary depending on individual vehicle system needs and marketplace. Therefore, pliability t
14、est method and requirements are to be agreed upon by the seatbelt system and webbing suppliers. The method and agreed upon requirements will be submitted with the initial source approval and made a part of the record. Any requirement changes in excess of +/- 15 % for a currently approved constructio
15、n will require a new approval submission. 3.13 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.14 ODOR, Rating, max. 2 (FLTM BO 131-01) 3.15 FLAMMABILITY (ISO
16、 3795/SAE J369) Burn Rate, max 100 mm/minute 3.16 LOAD-STRAIN LOWER AND UPPER LIMITS (Tensile test to FMVSS209) The percent strain must fall between the lower and upper limits of the curve shown. 3.17 ADDITIONAL REQUIREMENTS Additional requirements for material and/or manufactured parts may be speci
17、fied on the Engineering drawing, Engineering parts specification, performance specification, System Design Specification (SDS) and/or Component Design Specification (CDS). 3.17.1 Crease Recovery The seat belt system manufacturer and/or the vehicle assembly plant may require specific crease recovery
18、requirements, where induced creasing of the webbing may be caused by specific folding requirements and/or storage. The induced creasing on the webbing may, under certain circumstances, prevent the webbing from retracting fully. The test method and specific measured values, should be added to the Eng
19、ineering Drawing and agreed upon between the supplier and the affected Materials Engineering and Restraints Engineering Activities. ENGINEERING MATERIAL SPECIFICATION WSS-M7H60-A Page 4 of 5 Copyright 2010, Ford Global Technologies, Inc. 3.18 SUPPLIERS RESPONSIBILITY All materials supplied to this s
20、pecification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements
21、 the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons) of the proposed changes. Upon notification of the Company, further instructions will be provided. Note: Suppliers should be prepared to provide test data and samples demonstrating compliance to t
22、his specification, if requested. Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in Restricted Substance Management Standard WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this spe
23、cification for direct supply to the Company must have prior approval. Certain materials subcontracted by part suppliers may also require prior approval. These include materials critical to the Companys business for regulatory, safety, environmental or compatibility requirements or contractual agreem
24、ents. Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Materials Engineering activity. Upon request, the Supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative
25、of the test facility, demonstrating full compliance with all the requirements of this specification. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 Purchase departments will ensure that materials defined in the specification and shipped to any one vehicle in an assembly plant will be produced by one supplier only. ENGINEERING MATERIAL SPECIFICATION WSS-M7H60-A Page 5 of 5 Copyright 2010, Ford Global Technologies, Inc.
