1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 05 10 Activated D. Whyte, J. Crist Printed copies are uncontrolled Page 1 of 4 Copyright 2002, Ford Global Technologies, Inc. BARRIER, ACOUSTICAL, 25% MINIMUM POST CONSUMER WSS-M5G65-A AND/OR POST INDUS
2、TRIAL RECYCLATE CONTENT 1. SCOPE The material defined by this specification is a thermoplastic blend of nylon, polyester, polyethylene, and polypropylene containing a minimum of 25% recycled content from post consumer and/or post industrial sources. 2. APPLICATION This specification was released ori
3、ginally for material used in acoustical barrier composites. 3. REQUIREMENTS In addition to the requirements listed herein, the end item acoustical assemblies, shall meet all the requirements of the WSS-M99P32-A performance specification for acoustical and thermal assemblies. Material specification r
4、equirements are 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. 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representi
5、ng 3 sigma values. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that cor
6、respond to the reference standard when tested under the same conditions. 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 teste
7、d under the same conditions unless otherwise specified. ENGINEERING MATERIAL SPECIFICATION WSS-M5G65-A Page 2 of 4 Copyright 2002, Ford Global Technologies, Inc. 3.5 PHYSICAL PROPERTIES 3.5.1 Density (ISO 1183, Method A) Type A: dash insulator 1.12 1.24 g/cm3 Type B: floor system 1.05 1.15 g/cm3 (s)
8、 3.5.2 Tensile Strength at Max Load, min (ISO 37/ASTM D 412, Die A, 25 mm/min) 3.5.2.1 Original WMD 350 N/cm2 AMD 250 N/cm2 3.5.2.2 After Humidity Aging, max - 30 % Change (48 h at 38 +/-C and 95 +/-2% R.H., 1 h at room temperature) 3.5.2.3 After Heat Aging, max - 15 % Change (14 days at 38 +/- C, 1
9、 h at room temperature) 3.5.2.4 After Immersion, max - 30 % Change (48 h in distilled water at room temperature) (s) 3.5.3 Tear Strength, min WMD 30 kN/m (ISO 34, Method B/ASTM D624, Die C, AMD 20 kN/m 50 mm/min) 3.5.4 Cold Flexibility No Cracking Condition 50 x 150 mm and a 50 mm diameter mandrel a
10、t 30 C for a minimum of 4 h. Bend specimen 180 degree around the mandrel. 3.5.5 Heat Resistance No Cracking Condition 50 x 150 mm and a 50 mm diameter mandrel at 80 C for a minimum of 4 h and then test per paragraph ENGINEERING MATERIAL SPECIFICATION WSS-M5G65-A Page 3 of 4 Copyright 2002, Ford Glob
11、al Technologies, Inc. 3.5.6 Sound Transmission Loss (SAE J1400, or as specified on engineering drawing) Unless otherwise specified on the engineering drawing, the sound transmission loss shall meet or exceed the calculated “mass law“ Sound Transmission Loss (STL) values from 125 or 4000 Hz for every
12、 one-third octave within the precision described in ASTM E 90. Mass Law: STL (dB) 20 log (weight) + 20 log(frequency) - 47.2 dB Weight in kg/m2 Frequency in Hz 3.7 ADDITIONAL REQUIREMENTS Additional requirements for material and/or manufactured parts may be specified on the Engineering drawing, Engi
13、neering parts specification, performance specification, System Design Specification (SDS) and/or Component Design Specification (CDS). 3.8 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originall
14、y 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, the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons)
15、 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 this specification, if requested. Substance restrictions imposed by regulations or Company direction appl
16、ies to the materials addressed by this document. The restrictions are identified in Restricted Substance Management Standard WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION WSS-M5G65-A Page 4 of 4 Copyright 2002, Ford Global Technologies, Inc. 4. APPROVAL OF MATERIALS Materials defined by this s
17、pecification 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 agre
18、ements. 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 representativ
19、e 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 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PA, PET, PE, PP
