1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 06 Revised Updated per WSS-M8P5-A L. Schmalz, NA 1998 03 20 Activated N. J. Komatsu Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 THREAD, POLYAMIDE, THREE PLY, TEX 38 WSS-M15H65-A 1. SCOPE Th
2、e material defined by this specification is a polyamide thread manufactured as a single cord incorporating three separate plies. 2. APPLICATION This specification is used as an under thread in sewing operations in the manufacture of automotive seat back cover assemblies where seam failure by side im
3、pact airbag initiation is required. Also specified on Engineering Drawing. 3. REQUIREMENTS In addition to the requirements quoted herein, this material must meet the requirements of the performance specification, WSS-M8P5-C. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and p
4、art producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 APPEARANCE (FLTM BI 109-01) The color, pattern, and finish shall match the approved Design Center master sample, or shall be as specified on the Engineering Drawing. 3.3 YARN CONSTRUCTION
5、AND DESCRIPTION (ASTM D 1244) The thread is manufactured in one single cord from three separate plies (multifilament yarns made from polyamide 6/6). 3.4 PHYSICAL REQUIREMENTS 3.4.1 Thread Size, range 38 +/- 5 Tex (ASTM D 204-2) 3.4.2 Tensile Strength, min 18 N (ASTM D 204-2) 3.4.3 Elongation at Brea
6、k, range 14 - 26% (ASTM D 204-2) 3.4.4 Twist, range 440 - 530 turns/m (ASTM D 204-2) ENGINEERING MATERIAL SPECIFICATIONPrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 5. SUMMARY OF REVISIONS 2009 08 06 Updated 3 Deleted 3.1 3.3 Moved 3.4 to 3.2 Moved 3.5 to 3.3 Moved 3.6 to 3.4 Deleted 3.7 -5
