1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Revisions1988 12 08 NB00I10011140000 ReleasedWP 3948-a Page 1 of 3BARRIER, ETHYLENE VINYL ACETATE, MOLDABLE ESB-M5G50-A1. SCOPE:The materials defined by this specification are moldable, filled ethylenevinyl acetate soun
2、d barriers.2. APPLICATION:This specification was released originally for materials used as soundtransmission barriers on 1991 carlines.3. REQUIREMENTS:3.1 STATISTICAL PROCESSSuppliers must conform to the requirements of Ford Quality SystemStandard Q-101. A mutually acceptable Control Plan as describ
3、edtherein is required for material/source approval. Appropriatestatistical tools must be used to analyze process/product data sothat variation in the final product is continually reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISAll samples shall produce spectra or thermograms that corre
4、spond tothe reference standard when tested under the same conditions. Theinfrared spectra or thermograms established for initial approvalshall constitute the reference standard and shall be kept on fileat the designated material laboratory.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicate
5、d herein are based on materials conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for 24 h prior to testing and tested under the samecontrolled conditions.3.4 THICKNESS As specified on engineering(ASTM D 461, 6.4 mm diameter drawingfoot, 85 g load)3.5 WEIGHT As spec
6、ified on engineering(ASTM D 461) drawing3.6 SPECIFIC GRAVITY 2.1 +/- 10 %(ASTM D 792)ENGINEERING MATERIAL SPECIFICATION ESB-M5G50-AWP 3948-a Page 2 of 33.7 TENSILE STRENGTH, min 1.1 MPa(ASTM D 412, Die A)3.8 TEAR STRENGTH, min 11.0 kN/m or as specified on(ASTM D 624, Die C) the engineering drawing3.
7、9 COLD FLEXIBILITY No crackingTest Method: Condition 50 x 150 mm samples and a 50 mm diametermandrel at -29 +/- 1 C for a minimum of 4 h. Bend sample 180 degaround the mandrel.3.10 HEAT RESISTANCE No crackingTest Method: Age 50 X 150 mm samples at 88 +/- 2 C for a minimumof 4 h, and then test per pa
8、ra. 3.9 Cold Flexibility.3.11 ODOR Not objectionable(SAE J 1351)Test Method: Samples heated in a closed container for a minimum of2 h at 100 +/- 2 C.3.12 SOUND TRANSMISSION LOSS(SAE J 1400, vertical position,without steel panel)Unless otherwise specified on the engineering drawing, the soundtransmis
9、sion loss shall meet or exceed the calculated “mass law“Sound Transmission Loss (STL) values from 125 to 4000 Hz for everyone-third octave within the precision described in ASTM E 90.Mass Law: STL (dB) = 20 log (weight) + 20 log (frequency) -47.2 dBWeight in kg/m2Frequency in Hz3.13 FOGGING, min 60(
10、FLTM BO 116-3)3.14 FLAMMABILITY, max 100 mm/minute(ISO 3795/SAE J 369)3.15 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inall characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECIFICATION ESB-M5G50-AWP 3948-a P
11、age 3 of 3Prior to making any changes in the properties, composition,construction, color, processing or labeling of the materialoriginally approved under this specification, whether or not suchchanges affect the materials ability to meet the specificationrequirements, the Supplier shall notify Purch
12、asing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, test samples and a new code identificationare to be submitted with the request.Substance restrictions imposed by law, regulations o
13、r Ford apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material specification WSS-M99P9999-A1,unless a different suffix (e.g., A2 or A3) is specified on theengineering document for the application.4. APPROVAL OF MATERIALS:Materials defined by this specifi
14、cation must have prior approval by theresponsible Materials Engineering activity. Suppliers desiring approvalof their materials shall first obtain an expression of interest from theaffected Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity its own laboratory report to the specification (test results,not nominal values), the material designation and code number and testspecimens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
