1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS No Replacement Named C. Mracna, NA 2004 08 18 Revised Para 3.0 inserted; para 3.1, 3.2, 3.16 & 4 deleted 1982 04 13 Released H8L-61 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 E
2、PDM SPONGE, SOUND DEADENING ESH-M2D318-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a closed cell EPDM sponge rubber with good sound deadening properties. 2. APPLICATION This specification was released originally for material used for an A/C dash panel seal.
3、 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 ELASTOMER 100% EPDM 3.4 DENSITY, min 30 lb/ft3(480 kg/m3) 3.5 25% COMPRESSION DEFLECTION (ASTM D
4、 1056) As received 5-9 psi (35 - 63 kPa) Change after aging 7 days at 70 C +/- 30% 3.6 WATER ABSORPTION, max 5% (SAE J 18) 3.7 COMPRESSION SET, max 25% (ASTM D 1056) 3.8 OZONE RESISTANCE Must pass (ESB-M9P1-A) 3.9 LOW TEMPERATURE FLEXIBILITY Must not crack when bent 180 at -30 C. 3.10 ASH CONTENT, m
5、ax 60% (1 h, 600 C) 3.11 TEAR RESISTANCE, min 1970 N/m (ASTM D 3574) ENGINEERING MATERIAL SPECIFICATIONESH-M2D318-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.12 CELL STRUCTURE Must be uniform, free of large voids or hard spots. 3.13 ODOR Must not be
6、objectionable as received or after 22 h at 125 C. 3.14 ACOUSTICAL PERFORMANCE (Testing required for initial source approval only) Suppliers approved to this specification must have their material functionally approved by the affected Car Product Development Group for acoustical performance. This app
7、roval must be obtained before Materials Engineering Department approval will be given. 3.15 FLAMMABILITY, max 4 in (101 mm)/min (FLTM BN 24-2, without sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above maximum value.
