1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2015 05 15 Editorial Removed section 2 statement except as specified below L. Schmalz, NA 2014 03 03 Editorial Removed selection A from scope L. Schmalz, NA 2009 09 30 Activated M. Dumitrescu, NA J.W. Williams, EU Controlled document a
2、t www.MATS Copyright 2015, Ford Global Technologies, LLC Page 1 of 4 LEATHER, GENUINE, CORRECTED GRAIN, STANDARD, WSS-M1F29-B CHROME TANNED OR CHROME FREE TANNED 1. SCOPE The materials defined by this specification are corrected grain, steer or heifer hides which have been tanned and softened to pro
3、vide maximum seating comfort without sacrificing the leathers remaining physical properties. 2. APPLICATION These specifications were released originally for material used as interior trim and seating leather, excluding instrument panel covers and steering wheels. Because the hand and appearance cha
4、racteristics will be adversely affected, the leather shall not be subjected to steam or radiant heat or organic solvents during any manufacturing process. Corrected grain leather shall be snuffed using one pass of 320 grit paper. No stuccoing, filling or other repair is permitted. The method of corr
5、ection shall be agreed upon with Materials Engineering, Color and Materials, Seat Engineering and Purchasing. 3. REQUIREMENTS Materials manufactured to this Specification shall also meet the requirements contained in WSS-M99P43-B. For all test methods, no individual specimen shall fall below the min
6、imum values specified herein. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for production materials (WSS-M99P1111-A). 3.2 SAMPLE SELECTION Samples for testing shall be selected according to paragraph 3.3 i
7、n WSS-M99P43-B. 3.3 APPEARANCE (FLTM BI 109-01) The color, grain, visual aesthetics, hand and finish shall match the approved Design Centre master sample and shall be as specified on the Engineering Drawing. It is the responsibility of the leather supplier/cutter, the first receiving location and/or
8、 the Tier One Seat Supplier to follow the direction of the relevant Natural Characteristics Standard, copies of which are available from Color and Materials NA or Thierry in Europe. (Addresses in Appendix I) 3.4 GRADE The leather must be through dyed to prevent undyed fibers from showing through aft
9、er sewing or perforation. Also, the colour of the dye must be compatible in appearance with the surface coating. ENGINEERING MATERIAL SPECIFICATION WSS-M1F29-B Copyright 2015, Ford Global Technologies, LLC Page 2 of 4 3.5 FINISH All hides shall show no paint defects or surface blemishes affecting th
10、e appearance of the material, such as brush marks or stops and bad flows. 3.6 THICKNESS, range 1.0 - 1.5mm (ASTM D 1813) or as specified on the Engineering Drawing 3.7 SHRINKAGE 5.0% max (FLTM BN 105-03, except Heat Cycle 100 +/-2 C, 3 cycles) 3.8 ADHESION OF SURFACE COATING (ISO 11644, Adhesive Typ
11、e: Cyanoacrylate - Sicomet 8400 or equivalent. Supplier: Henkel, or equivalent. Condition bonded test specimens for 1 hour min.) As received 4N/10mm min After humidity (WSS-M99P43-B paragraph. 3.5.1.4) 4N/10mm min 3.9 STIFFNESS, target range* 65 +/- 10mm (FLTM BN 157-02) Stiffness measurements shall
12、 be taken along either side of the backbone. * Pending further data collection 3.10 STRETCH AND SET* (SAE J855) Stretch 25% max Set 10% max Perforated: As specified by Seat Engineering, dependant upon perforation pattern * Or as required by Seat Engineering. 3.11 LEATHER FUNCTIONAL PROPERTIES Leathe
13、r wear and process capability tests are required for all seating applications. In addition, other trim applications may require unique functional evaluations. These tests should be evaluated by a cross-functional team prior to Colour and Materials strategy approval to assess the effects of the leath
14、er selection, seat style, sew style, leather perforation, foam hardness, etc. on the predicted level of customer satisfaction and long term durability. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4
15、.1 SOFTNESS, range 3.5 +/- 0.5mm* (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diameter (nominal) aperture) Softness measurements shall be taken along either side of the backbone. ENGINEERING MATERIAL SPECIFICATION WSS-M1F29-B Copyright 2015, Ford Global Technologies, LLC Page 3 of 4 *P
16、er Ford Color and Materials Design/Mastering approved master hide and specified on the Approved Source List. 4.2 COATING THICKNESS, max Report microns (ISO 17186) In addition there shall be no excessive voids in the coating or evidence of poor adhesion. 4.3 COEFFICIENT OF FRICTION Report value (ASTM
17、 D 1894 or mutually agreed upon equivalent) 4.4 FINISH COATING Complete Supplement A * Recommended values * Recommended Test Method Pigmentation: List the pigments used to obtain the color. Supplement A Crust Coating Layer 1 Coating Layer 2 Coating Layer 3 Chemistry % Volume Solids Solvent Package V
18、OC FLTM BZ 157-01 Formaldehyde FLTM BZ 156-01 Coating Weight Wet Coating Weight Dry Coating Thickness (total thickness) Time between application of each coating layer Curing Time Curing Method Fat Content of the Crust ASTM D 3495 ISO 4048* 7-12%* Moisture Content of the Crust ASTM D 3790 PH Value AS
19、TM D 2810-07 ISO 4045* 3.5* ENGINEERING MATERIAL SPECIFICATION WSS-M1F29-B Copyright 2015, Ford Global Technologies, LLC Page 4 of 4 APPENDIX I LEATHER NATURAL CHARACTERISTICS STANDARD Color & Materials Ford Motor Company 20901 Oakwood Boulevard Dearborn Michigan 48124 USA Tel: +1 313 3373816 Thierry Przisionslackiertecknik GmbH Motorstrasse, 30 70499 Stuttgart Germany Tel: +49 (0) 711 83 99 74 72 Fax +49 (0) 711 83 99 74 80 Email: master.samplesthierry-gmbh.de
