1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2013 05 10 ReActivated Short term solution for NVH foam usage on IP ducts Y. Bankowski, NA 2006 09 06 Revised Removed ESB-M2D304-B was made Inactive 8/16/2006, replaced by WSS-M99P32-B; Del 3.15 R. Lord 2006 05 02 Revised ESB-M2D304-A made N-
2、STATUS; Rep by WSS-M99P32-B A. Reaume 1981 01 26 Released B1T-4551/CEK1-DR-586632-3 Copyright 2013, Ford Global Technologies, LLC Page 1 of 3 POLYURETHANE FOAM, ACOUSTICAL, OPEN FINE CELL ESB-M2D304-A 1. SCOPE The material defined by this specification is an open, fine celled polyurethane foam. 2. A
3、PPLICATION This specification was released originally for material used as a sound absorber in the spare tire well of the 1982 Escort/Lynx Sporty Coupe. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION
4、 MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 APPEARANCE The color, pattern, and finish shall match the approved Design Center master sample, or shall be specified on the engineering drawing. 3.3 DEN
5、SITY, range 1.3 - 2.2 lb/ft3 (20.8 - 35.2 kg/m3) (ASTM D 1564, Suffix “W“, sample size 12 x 12 x 1 in (300 x 300 x 25 mm) 3.4 CELL STRUCTURE 40 cells/linear in min. (16 cells/10 mm) Shall have a homogeneous, open, fine cell structure, with no large voids or solid spots. It shall be free from interna
6、l defects such as cold shuts, folds, laps, and tears. 3.5 TENSILE STRENGTH 12 psi (83 kPa) min (ASTM D 1564, Suffix “T“) Elongation 125% min 3.6 HEAT AGED TENSILE 75% min STRENGTH, Retention of original (ASTM D 1564, Suffix “A“) ENGINEERING MATERIAL SPECIFICATION ESB-M2D304-A Copyright 2013, Ford Gl
7、obal Technologies, LLC Page 2 of 3 3.7 TEAR STRENGTH 1.5 lb/in (262 N/m) min (ASTM D 1564) 3.8 COMPRESSION SET 20% max (ASTM D 1564, Method “B“, 22 h at 70 +/- 1 C, 50% constant deflection) 3.9 25% COMPRESSION - DEFLECTION 7 lb (31 N) min (ASTM D 1564, 4 x 4 in (100 x 100 mm) or as specified samples
8、, direct load reading) on engineering drawing 3.10 AIR PERMEABILITY 10 - 115 ft3/ft2/min (ASTM D 737, 0.5 in (3.0 - 35.0 m3/m2/min) (12.5 mm) thick sample, sample should not be compressed) 3.11 SOUND ABSORPTION, % min, Initial Source Approval Only (ASTM C 384) 0.5 in (12.5 mm) 1.0 in (25.0 mm) 250 H
9、z 3 5 500 Hz 6 20 1000 Hz 16 45 2000 Hz 35 70 3.12 DETERIORATION (FLTM BO 012-01) No evidence of cracking, loss of cellular structure, tackiness or crumbling. Test Method: A specimen 2 x 8 in (50 mm x 200 mm), x part thickness, shall be subjected to steam autoclave aging for 3 h at 100 110 C, then d
10、ried for 3 h at the above temperature in a convection oven, followed by 2 h conditioning at 23 +/- 2 C. The sample shall be subsequently bent 180 around a 0.25 in (6.4 mm) diameter mandrel, at 23 +/- 2 C. 3.13 WICKING (SAE J 913, using water) 0.5 in (13 mm) max 3.14 FLAMMABILITY 4 in (101 mm)/min ma
11、x (FLTM BN 024-02, without the lot 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. ENGINEERING MATERIAL SPECIFICATION ESB-M2D304-A Copyright 2013, Ford Global Technologies, LLC Page 3 of 3 3.16 PER
12、FORMANCE - ENVIRONMENTAL AGING All materials, portions of components, and composites defined by this specification that have not been treated, modified or reformulated and exceed a maximum burn rate of 3.0 in (76 mm) per minute as specified by the Flammability Lot Sampling Plan of FLTM BN 024-02, mu
13、st be evaluated for permanency of the materials flame retardant properties per ESB-M25P3-A according to the accelerated environmental aging requirements applicable to the basic material category of this particular specification. Any material, portions of components, and composites defined by this sp
14、ecification that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM BN 024-02, regardless of maximum burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per ESB-M25P3-A applicable to the basic materials category of this particular specification. 3.17 FLAMMABILITY TEST PROGRAM Materials, portions of components, and composites governed by this specification must also comply with the requirements of ES-D3AB-11014-AA.
