1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 12 14 N Status Replaced by WSS-M4D985-A2 L. Schmalz 2004 11 03 Revised Inserted 3.0, 3.4.7, 3.4.7.1 Deleted 3.1, 3.2, 3.3, 3.9, 3.10, 4 C. Lin 2002 05 06 Activated C. Lin Printed copies are uncontrolled Copyright 2006, Ford Global Techno
2、logies, LLC Page 1 of 2 FLEXIBLE COVERSTOCK, SLUSH MOLDABLE POLYVINYL WSS-M4D985-A CHLORIDE (PVC), INSTRUMENT PANEL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a dry blended slush molded polyvinyl chloride skin that is both UV and heat stabilized and is used
3、as a formed instrument coverstock. 2. APPLICATION This specification was released originally to be used as flexible cover stock for the instrument panel of the Expedition. 3. REQUIREMENTS This material must also meet the requirements in WSS-M15P45-A and any applicable SDS including but not limited t
4、o the IP and PAB SDS. 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 3.4.1 Preparation of Test Specimens Unless otherwise specified, all tests sha
5、ll be carried out on specimens die cut from unformed sheets. 3.4.2 Specific Gravity (+/- 0.1) 1.17 (ASTM D 792) 3.4.3 Hardness, Durometer 75 (15 s dwell, +/- 5) 3.4.4 Tensile Strength at Max Load, min 10 MPa (ASTM D 638, 500 mm/minute test speed machine and transverse direction) 3.4.4.1 Elongation a
6、t Break, min 250% (Test Method according to para 3.4.4) 3.4.5 Cold Flexibility at -40 C No cracks (180 bend over a 20 +/- 1 mm diameter mandrel, sample size 50 x 150 +/- mm) ENGINEERING MATERIAL SPECIFICATION WSS-M4D985-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC
7、Page 2 of 2 3.4.6 Tear Strength, min 40 kN/m (ASTM D1004, 50 mm/minute test speed.) 3.4.7 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 C, unaged property values shall be determined at the time of the aged properties determination) 3.4.7.1 Tensile Strength Change, m
8、ax. +/- 25% 3.4.7.2 Elongation at Break, Change from Original Value, max +/- 50% (100% absolute elongation minimum) 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rej
9、ection. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is approximately 355 x 100 x extruded coverstock thickness not to exceed 13 mm. The thickness must be documented on the report. 3.7 ODOR Rating 2 (FLTM BO 131-01) 3.8 MATERIAL PERFORMANC
10、E TESTING The materials approved to this specification must meet the performance specification WSS-M15P45-A for Instrument Panels and the applicable SDS such as the IP-SDS. If the final assembly contains an integrated airbag the material must meet the PAB-SDS and Restraints must be contacted for all requirements. Once documentation is provided that this testing is complete the material will be added to the approved source list. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE
