1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 28 N-STATUS Replaced by WSS-M15P20-B1/B2 C. Mracna, NA 2004 09 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1990 04 30 Released C10072360 P Thomas Printed copies are uncontrolled Copyright 2009, Ford Global Technologies
2、, LLC Page 1 of 2 POLYURETHANE (PUR) FOAM, MOLDED WSD-M2D437-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molded flexible polyurethane foam. 2. APPLICATION This specification was released originally for material used in headrests. 3. REQUIREMENTS 3.0 STAND
3、ARD 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 The foam shall have a homogeneous medium sized cell structure with no large voids or solid spots which may impa
4、ir the serviceability of the part. 3.5 TEST SPECIMEN The following material properties shall be determined on specimens taken from the core 6 - 10 mm from the surface skin, unless otherwise specified. This specimen shall be free of voids, hard spots and densification lines. 3.5.1 Density, Core, min
5、85 kg/m3(ISO 845/ASTM D 3574, Test A) 3.5.2 Tensile Strength, min 100 kPa (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks, 5 specimens minimum.) 3.5.2.1 Elongation at Break, min 80% (Test according to para 3.5.2) 3.5.3 Tear Strength, min 230 N/m (ASTM D 3574, Test F, 50 mm/min test speed) 3.5.4 Com
6、pression Set at 50% deflection, max 8% (ISO 1856, Method A/ASTM D 3574, Test D, Ct calculation, 22 h at 70 C, 3 specimens minimum.) 3.5.5 Heat Aging (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) ENGINEERING MATERIAL SPECIFICATIONWSD-M2D437-A Printed copies are uncontrolled Copyright 2009, Ford
7、 Global Technologies, LLC Page 2 of 2 3.5.5.1 Compression Deflection Stress Change, max +/- 30% (ISO 3386/1, 40% compression, 100 x 100 x 50 mm specimen, 100 +/- 20 mm/min test speed, 3 specimens minimum) 3.5.6 Humidity Aging (AUTOCLAVE) (ISO 2440/ASTM 3574, Test J, 100 x 100 x 50 mm specimen, 5 h a
8、t 120 +/- 2 C) 3.5.6.1 Compression Deflection Stress Change, max +/- 30% (Test acc. to para 3.5.5.1) 3.5.6.2 Compression Set, max 14% (Test acc. to para 3.5.4) 3.5.7 Staining None Test Method: Cover an approx. 100 mm x 100 mm x 10 mm foam specimen (with surface skin on one side) with a section of li
9、ght colored standard vinyl (FLTM BN 103-01) and currently released lightest color face fabric. Expose assemblies for 168 h at 120 +/- 2 C. Control specimens of vinyl and textile should also be exposed. Evaluate the standard materials after cooling to room temperature. 3.5.8 Fogging Number, min 60 (FLTM BO 116-03, 3 h at 100 C) 3.5.9 Odor, max Rating 2 (FLTM BO 131-01/SAE J 1351) 3.5.10 Ash Content, max 1% (ISO 247, Method B/ASTM D 1278, 800 +/- 25 C) 3.5.11 Flammability (ISO 3795) Burn Rate, max 100 mm/minute
