1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 17 N-STATUS Replaced by WSS-M15P45-B C. Mracna, NA 2004 09 20 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.7, 3.8 & 4 deleted 1989 09 29 Released SM/EQ035825 TP K. Gerhards Printed copies are uncontrolled Copyright 2009, Ford Globa
2、l Technologies, LLC Page 1 of 2 POLYURETHANE (PUR) FOAM, MOLDED SEMI RIGID WSK-M2D415-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molded semi rigid polyurethane foam. 2. APPLICATION This specification was released originally for material used in instrumen
3、t panels. 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 The foam shall have a homogeneous medium sized cell structure with no large
4、voids or solid spots which may impair the serviceability of the part. 3.5 TEST SPECIMEN The following material properties shall be determined on specimens taken from the molded part with surface skin cut off wherever possible. In case that the part dimensions do not allow the preparation of specimen
5、s as requested, specimens shall be prepared from a 200 x 200 x 40 mm molded foam block. These specimens shall be free of voids, hard spots and densification lines. 3.5.1 Density, min 70 kg/m3(ISO 845/ASTM D 3574, Test A) 3.5.2 Tensile Strength, min 260 kPa (ISO 1798/ASTM D 3574, Test E, 50 mm bench
6、marks, 5 specimens minimum) 3.5.2.1 Elongation at Break, min 20% (Test according to para 3.5.2) 3.5.3 Tear Strength, min 200 N/m (ISO DIS 8067/ASTM D 3574, Test F, 50 mm/min test speed) 3.5.4 Compression Set, max 40% (ISO 1856, Method A/ASTM D 3574, Test D, Ct calculation, 22 h at 70 C, 50% deflecti
7、on, 3 specimens min. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D415-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.5.5 Compression Deflection Stress 100 +/- 40 kPa (ISO 3386/1 at 40% compression, specimen size 50 x 50 x 25 mm, 100 +/- 20 mm/minute test spe
8、ed) 3.5.6 Heat Aging (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) 3.5.6.1 Compression Deflection Stress Change, max +/- 25% (Test acc. to para 3.5.5) 3.5.7 Humidity Aging (AUTOCLAVE) (ISO 2440/ASTM 3574, Test J, 5 h at 120 C) 3.5.7.1 Compression Deflection Stress Change, max +/- 40% (Test acc
9、 to para 3.5.5) 3.5.7.2 Compression Set, max 40% (Test acc. to para 3.5.4) 3.5.8 Fogging, min (FLTM BO 116-03) Fog Number, min 70 The formation of droplets or coalescence into a clear film is cause for rejection. 3.5.9 Odor, max Rating 2 (FLTM BO 131-01/SAE J1351) 3.5.10 Flammability (ISO 3795) Burn Rate, max 100 mm/minute 3.6 COMPATIBILITY The foam material must be compatible with the production released cover material. For detail see relevant Engineering Drawing.
