1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2016 10 18 Editorial Removed Premium from title S. Gatzek, NA 2015 05 15 Editorial Removed section 2 statement except as specified below L. Schmalz, NA 2009 09 30 Activated M. Dumitrescu NA J.W. Williams, EU Controlled document at www.
2、MATS Copyright 2016, Ford Global Technologies, LLC Page 1 of 4 LEATHER, GENUINE, FULL GRAIN, WSS-M1F28-B CHROME TANNED OR CHROME FREE TANNED 1. SCOPE The materials defined by this specification are finished, full grain, steer or heifer hides which have been tanned and softened to provide maximum sea
3、ting 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 characteristics wil
4、l be adversely affected, the leather shall not be subjected to steam or radiant heat or organic solvents during any manufacturing process. No buffing, stuccoing, filling or other repair is permitted. 3. REQUIREMENTS Materials manufactured to this Specification shall also meet the requirements contai
5、ned in WSS-M99P43-B. For all test methods, no individual specimen shall fall below the minimum 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
6、). 3.2 SAMPLE SELECTION Samples for testing shall be selected according to paragraph 3.3 in 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
7、 is the responsibility of the leather supplier/cutter, the first receiving location and/or the Tier One Seat Supplier to follow the direction of the relevant Natural Characteristics Standard, copies of which are available from Color and Materials North America or Thierry in Europe. (Addresses in App
8、endix I) 3.4 GRADE The leather must be through dyed to prevent undyed fibers from showing through after sewing or perforation. Also, the colour of the dye must be compatible in appearance with the surface coating. 3.5 FINISH All hides shall show no paint defects or surface blemishes affecting the ap
9、pearance of the material, such as brush marks or stops and bad flows. ENGINEERING MATERIAL SPECIFICATION WSS-M1F28-B Copyright 2016, Ford Global Technologies, LLC Page 2 of 4 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
10、-03, except Heat Cycle 100 +/-2 C, 3 cycles) 3.8 ADHESION OF SURFACE COATING (ISO 11644, Adhesive: Cyanoacrylate - Sicomet 8400 or equivalent Supplier: Henkel, or equivalent. Condition bonded test specimens for 1 hour min.) As received 4N/10mm min After humidity per WSS-M99P43-B, clause 3.5.1.4 4N/1
11、0mm min 3.9 STIFFNESS, target range* 60 +/- 10mm (FLTM BN 157-02) Stiffness measurements shall be taken on 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 perforat
12、ion pattern * Or as required by Seat Engineering 3.11 LEATHER FUNCTIONAL PROPERTIES Leather 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-function
13、al team prior to Colour and Materials strategy approval to assess the effects of the leather 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 provi
14、ded for clarification and assistance in meeting the requirements of this specification 4.1 SOFTNESS, range 4.0 +/- 0.5 mm* (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diameter (nominal) aperture) Softness measurements shall be taken on either side of the backbone. *Per Ford Color and M
15、aterials Design/Mastering approved master hide and specified on the Approved Source List. ENGINEERING MATERIAL SPECIFICATION WSS-M1F28-B Copyright 2016, Ford Global Technologies, LLC Page 3 of 4 4.2 COATING THICKNESS Report microns (ISO 17186) In addition there shall be no excessive voids in the coa
16、ting or evidence of poor adhesion. 4.3 COEFFICIENT OF FRICTION Report value (ASTM 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 La
17、yer 1 Coating Layer 2 Coating Layer 3 Chemistry % Volume Solids Solvent Package VOC 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 A
18、STM D 3495 ISO 4048* 7-12%* Moisture Content of the Crust ASTM D 3790 PH Value ASTM D 2810-07 ISO 4045* 3.5* ENGINEERING MATERIAL SPECIFICATION WSS-M1F28-B Copyright 2016, Ford Global Technologies, LLC Page 4 of 4 APPENDIX I LEATHER NATURAL CHARACTERISTICS STANDARDColor& Materials North America 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
