1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 05 25 N-STATUS No replacement named C. Mracna, NA 2004 09 16 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6, 3.7 & 4 deleted 1989 08 31 Released SM/EQ7118 TP K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Global Tech
2、nologies, LLC Page 1 of 2 POLYURETHANE (PUR) FOAM, MOLDED, WSK-M2D398-A INTEGRAL SKIN NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a low density molded polyurethane foam with a high density integral skin. 2. APPLICATION This specification was released original
3、ly for material used as seal door inside handle assembly. 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 TEST SPECIMEN The following material pr
4、operties shall be determined on test specimen taken from 200 x 200 x 15 mm molded slab stock produced under the same conditions as the parts. In case of skin and foam core testing, skin and foam core shall be cleanly separated from the molded test piece using mechanical aids only. 3.4.1 Foam Core 3.
5、4.1.1 Density, min 220 kg/m3(ISO 845) 3.4.1.2 Tensile Strength, min 150 kPa (ISO 1798, 5 specimens minimum) 3.4.1.3 Elongation, min 125 % (Test Method per para 3.4.1.2) 3.4.2 Integral Skin 3.4.2.1 Thickness As specified on (ISO 4593) Engrg. Drawing 3.4.2.2 Tensile Strength, min 0.6 MPa (ISO 1184, ty
6、pe 2 specimens, test speed 500 mm/min) 3.4.2.3 Elongation at Break, min 140% (Test method per para 3.4.2.2) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D398-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 3.4.2.4 Tear Strength, min 2.0 N/mm (ISO 34, Method B) 3
7、4.3 Composite Slab Stock The foam shall have a homogeneous medium sized cell structure with no large voids or cracks which may impair the serviceability of the part. The integral skin must not show any injuries. 3.4.3.1 Compression Set, max 18% (ISO 1856, 22 h at 70 C, 50% deflection, specimen size
8、 50 x 50 x 15 mm, 3 specimens, minimum) 3.4.3.2 Compression Deflection Stress 40 +/- 10 kPa (ISO 3386/1 at 40% compression, specimen size 50 x 50 x 15 mm, test speed 100 +/- 20 mm/minute) 3.4.3.3 Humidity Aging (Autoclave) (ISO 2440, 3 h at 105 C) Compression Deflection Stress Change, max +/- 25% (T
9、est acc. to para 3.4.3.2) 3.4.3.4 Heat Aging (ISO 2440, 22 h at 120 +/- 2 C) Compression Deflection Stress Change, max +/- 25% (Test acc. to para 3.4.3.2) 3.4.3.5 Fogging (FLTM BO 116-03, 6 h, 90 C) Fog Number, min 70% 3.4.3.6 Odor, max Rating 2 (FLTM BO 131-01) 3.5 FLAMMABILITY (ISO 3795) Burn rate, max 100 mm/minute 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE PUR
