1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes Rev. 2 2008 10 30 N-STATUS Replaced by WSS-M15P6-D L. Sinclair, FNA 1996 07 30 Activated Y. Alaniva WP 3948-a Page 1 of 3 MAT, POLYESTER NONWOVEN, FLAT NEEDLED, WSS-M3H67-B NON-BACKCOATED NOT TO BE USED FOR NE
2、W DESIGN 1. SCOPE The material defined by this specification is a flat needled, unbacked, nonwoven polyester mat of good quality and uniform composition. 2. APPLICATION This specification was released originally for material used on package trays for the 1997 Escort. 3. REQUIREMENTS In addition to t
3、he requirements listed herein, the end-item package tray assemblies manufactured with this material (molded or otherwise fabricated), shall meet all applicable requirements of WSS-M15P6-D. In addition, other parts manufactured with this material shall meet requirements specified on the engineering d
4、rawing. This material must always be bonded 100 % to a substrate (see flammability paragraph). 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to Quality System Requirements, QS-9000. Material specification requirements are to be used for initial qualification of m
5、aterials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the relevant Ford Materials activity and/or Ford Supplier Technical Assistance (STA) prior to production parts submission. Appropriate statistical tools must be used to analyze proces
6、s/product data and assure consistent processing of the materials. Part producers using this material in their products, must use Ford approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2 INFRARED SPECTROPHOTOMETRY AN
7、D/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated
8、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-M3H67-B WP 3948-b Page 2 of 3 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are ba
9、sed 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 otherwise specified. 3.4 APPEARANCE The color, pattern and finish shall match the approved Design Center master sa
10、mple, or shall be as specified on the engineering drawing. 3.5 COMPOSITION (ASTM D 276) Fabric 100 % Polyester 3.6 FABRIC REQUIREMENTS 3.6.1 Fiber Size and Description 18 dtex polyester (ASTM D 1244) 3.6.2 Method of Dyeing Solution dyed 3.6.3 Thickness, range 3.3 - 5.1 mm (ISO 1765) 3.6.4 Weight, ra
11、nge* 310 - 380 g/m2 (FLTM BN 106-01) *Or as specified on engineering drawing 3.7 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute* *This material must always be bonded 100% to another material to form a composite, and the composite must not burn in excess of 100 mm/minute. 3.8 SUPPLIERS
12、 RESPONSIBILITY 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 change in the properties, composition, construction, color, processing or labeling of the material originally approve
13、d under 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 Engin
14、eering 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 Materials Specification WSS-M99P9999
15、-A1. ENGINEERING MATERIAL SPECIFICATION WSS-M3H67-B WP 3948-b Page 2 of 3 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 first obtain an expression of in
16、terest 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 of the test facility, demonstr
17、ating 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 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.
