1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 27 N-STATUS Replaced by WSS-M99P32-C C. Mracna, NA 2004 09 15 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.7, 3.8 & 4 deleted 1988 09 12 Released SM/EQ5940 TP K. Gerhards Printed copies are uncontrolled Copyright 2009, Ford Global
2、Technologies, LLC Page 1 of 2 POLYURETHANE (PUR) FOAM, OPEN CELL WSK-M2D389-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a completely open cell polyurethane foam with 240 pores per 100 mm. The material contains fire retardant additives. 2. APPLICATION This s
3、pecification was released originally for material used as front window garnish inner. 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). 3.4 APPEARANCE
4、The foam shall have a homogeneous medium sized cell structure with no large voids or cracks which may impair the serviceability of the part. 3.5 TEST SPECIMEN 3.5.1 Density, min 25 kg/m3(ISO 845/ASTM D 3574, Test A) 3.5.2 Tensile Strength, min 175 kPa (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks
5、, 5 specimens minimum) 3.5.2.1 Elongation, min 280% (test acc. to para 3.5.2) 3.5.3 Compression Set, max 8% (ISO 1856, Method A/ASTM D 3574, Test D, 22 h at 70 C, 50% deflection, Ct calculation, 3 specimens, minimum) 3.5.4 Compression Deflection Stress 2.6 - 3.6 kPa (ISO 3386/1 at 40% compression, s
6、pecimen size 100 x 100 x 50 mm, test speed 100 +/- 20 mm/min) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D389-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.5.5 Humidity Ageing (Autoclave) (ISO 2440/ASTM D 3574, Test J, 3 h at 105 C) 3.5.5.1 Compression Deflection Stress Change, max +/- 25% (Test acc. to para 3.5.4) 3.5.6 Cell Count 240 +/- 40 cells/100 mm Test Method: Cell count to be determined on a 1 mm thick sample placed on an overhead projector. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute
