1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 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 2010 04 15 Activated M. Dumitrescu FNA J. Williams FOE Controlled document at
2、www.MATS Copyright 2015, Ford Global Technologies, LLC Page 1 of 5 LEATHER, GENUINE, FULL GRAIN, LUXURY, WSS-M1F27-B CHROME TANNED OR CHROME FREE TANNED 1. SCOPE The material defined by these specifications is finished, full grain, steer or heifer hides which have been tanned and softened to provide
3、 maximum seating comfort without sacrificing the leathers remaining physical properties. 2. APPLICATION Because the hand and appearance characteristics will be adversely affected, the leather shall not be subjected to steam heat or radiant heat or organic solvents during any manufacturing process. N
4、o correcting or repair of any kind shall be allowed including but not limited to buffing, filling or stuccoing. Specific usage guidelines and care instructions should be supplied with the vehicle. Customers and dealers should be advised that these products will not perform in the same way as traditi
5、onal pigmented leathers. A limited warranty should also be considered. It must be noted in the ASL if the leather is chrome tanned or chrome free tanned. 3. REQUIREMENTS Materials manufactured to this Specification shall also meet the requirements contained in WSS-M99P43-B. For all test methods, no
6、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). 3.2 SAMPLE SELECTION Samples for testing sh
7、all be selected according to paragraph 3.3 in WSS-M99P43-B. 3.3 APPEARANCE (FLTM BI 109-01) The colour, grain, visual aesthetics, hand and finish shall match the approved Design Centre master sample, or shall be as specified on the Engineering Drawing. It is the responsibility of the leather supplie
8、r/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 NA or Thierry in Europe. (Addresses in Appendix I) 3.4 GRADE The leather must be through dyed to p
9、revent undyed fibers from showing through after sewing or perforation. Also, the colour of the dye must be compatible in appearance with the surface coating. No stuccoing permitted. ENGINEERING MATERIAL SPECIFICATION WSS-M1F27-B Copyright 2015, Ford Global Technologies, LLC Page 2 of 5 3.5 FINISH Al
10、l hides shall show no paint defects or surface blemishes affecting the appearance of the material, such as brush marks or stops and bad flows. 3.6 THICKNESS, range 1.0 1.5 mm (ASTM D 1813) Or as specified on the Engineering Drawing 3.7 SHRINKAGE, max. 5.0% (FLTM BN 105-03, except Heat Cycle 100 +/-2
11、 C, 3 cycles) 3.8 ADHESION OF SURFACE COATING, min (ISO 11644,. Adhesive Sicomet 8400 or equivalent Supplier: Henkel, or equivalent Condition bonded test specimens for 1 hour min.) As received 4N/10mm After humidity (WSS-M99P43-B para. 3.5.1.4) 4N/10mm 3.9 STIFFNESS, target range* 55 +/- 10mm (FLTM
12、BN 157-02) Stiffness measurements shall be taken along either side of the backbone. * Pending further data collection 3.10 STRETCH AND SET* (SAE J855) Stretch, max 25% Set, max 10% * Or as required by Seat Engineering. Perforated As specified by Seat Engineering, dependant upon perforation pattern 3
13、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-functional team prior to colour and trim strategy approval
14、 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. ENGINEERING MATERIAL SPECIFICATION WSS-M1F27-B Copyright 2015, Ford Global Technologies, LLC Page 3 of 5 4. GENER
15、AL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 SOFTNESS, range 4.5 +/- 0.5 mm (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diameter (nominal) aperture) Softness measurements shall be taken al
16、ong either side of the backbone. Per Ford Colour and Materials Design/Mastering approved master hide. 4.2 COATING THICKNESS, max Report value (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 D 1894 o
17、r mutually agreed upon equivalent) 4.4 FINISH COATING Complete Supplement A ENGINEERING MATERIAL SPECIFICATION WSS-M1F27-B Copyright 2015, Ford Global Technologies, LLC Page 4 of 5 * Recommended values * Recommended test method Pigmentation: List the pigments used to obtain the colour. Supplement A
18、Crust Coating Layer 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 Conten
19、t of the Crust ASTM D 3495 ISO 4048* 7-13%* Moisture Content of the Crust ASTM D 3790 PH Value ASTM D 2810-07 ISO 4045* 3.5* ENGINEERING MATERIAL SPECIFICATION WSS-M1F27-B Copyright 2015, Ford Global Technologies, LLC Page 5 of 5 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
