1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 06 N-STATUS Replaced by WSS-M99P43-B M. Dumitrescu, NA 2007 12 18 Activated M. Dumitrescu/S. Kornylo/J Williams Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 9 PERFORMANCE, LEATHER WSS-M99P43-A
2、 NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirements for interior trim and seating leather. 2. APPLICATION This specification was released to outline the performance of interior trim and seating leather. Perforated leather must also meet requirements for Fu
3、lly Perforated Leather, achieved by using a sealer known as flesh coating, to bind any loose fibers and to ensure flesh side fibers will not be visible thru perforation holes on the A surface. The leather shall not be subjected to steam heat or organic solvents during any manufacturing process excep
4、t as specified below because the hand and appearance characteristics will be adversely affected. No correcting or repair of any kind shall be allowed including but not limited to buffing, filling or stuccoing unless otherwise stated on individual Material Specifications. Limitations: Not for steerin
5、g wheel applications. 3. REQUIREMENTS Note: All leather is expected to meet these requirements except when noted in the individual WSS-M1F range of material specifications. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard
6、Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONTROL ITEMS Control Items must be run per Table 1 for the initial approval. Test specimens must be taken equally from the areas described in Figures 1 and 2 for Control Items. The Construction approval package must contain the Initial App
7、roval Control Items and the rest of the specification and be submitted to Materials Engineering and Seat Engineering. Once the leather is construction approved then control items must be completed per the matrix below on the same lot of the DV and PV Ingress/Egress covers. These results must also be
8、 submitted to Materials Engineering and Seat Engineering before Ingress/Egress testing (ST-0035) is approved. Control Items must be tested on every lot (production load) of material; control of these items must be represented in the PFMEA and control plan. These results must be readily available and
9、 submitted to Seat Engineering upon request. After the review and sign-off of the control documents (PFMEA, CP and Statistical data) for a significant number of lots, the frequency of the testing can be reduced as agreed upon by the Materials Engineering and Seat Engineering representatives. Other t
10、esting to this specification is for initial approval or on an “as requested“ basis“. ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 9 The location of the test samples is described in IUP/2 or ASTM D 2813 for phys
11、ical testing of leather samples. Figure 1 and Figure 2 below show where the samples shall be taken from on the given number of hides in the Control Item Sampling Plan, Table 1. Table 1: Control Item Sampling Plan Test Initial Approval DV/PV Ingress/Egress Production Bally Flex or W-Flex as received
12、10 hides 6 hides 1 hide Bally Flex or W-Flex heat aged 24 hours at 100 C 10 hides 6 hides 1 hide Bally Flex as received followed by Finish Adhesion 10 hides 6 hides 1 hide Pilling Wear 10 hides 6 hides 1 hide Simulated Seat Wear 10 hides 6 hides 1 hide Softness: As specified in the individual Materi
13、al Specification 10 hides 5 locations 6 hides 5 locations 1 hide 5 locations Thickness: As specified in the individual Material Specification 10 hides 5 locations 6 hides 5 locations 1 hide 5 locations Figure 1. Backbone testing, test samples must be taken from area similar to HGJK along both sides
14、of the back bone. If not enough samples can be taken to complete all of the testing then additional hides must be used. ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 9 Figure 2. Belly testing, test samples must
15、be taken between the edge of the hide and line US. The size is to be adjusted to fit the appropriate test specimen. 3.2.1 Bally Flex (ASTM D 6182) No cracking of the surface finish with a 6X microscope when the sample is bent over a 12 +/- 2 mm mandrel in the direction of the test area. Original 100
16、,000 cycles After aging 24 hours at 100 +/- 2 C 60,000 cycles 3.2.2 Finish Adhesion after Bally Flex, min. 3.5 N (ASTM D 6182 followed by IUF 470/ISO 11644) 3.2.3 Resistance To Pilling Wear, min. No wear through to (FLTM BN 108-14, 89 N Load) the russet. Report time to failure or as specified in mat
17、erial specification. 3.3 SAMPLE SELECTION Samples for testing shall be selected from the backbone and belly area of the hide. The backbone area is described in Figure 1 but the belly area must now be shifted to very edge of the hide, as is the manufacturing process. Sample locations must be noted on
18、 the test matrix. Untested areas of the hide must be submitted so that the hide can be reconstructed to view where the samples were taken. Sample size requirements are listed in Table 2. Test 10 pieces per backbone and belly except for paragraph 3.5 Color Properties or where the test method determin
19、es the sample size. ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 9 3.4 STRENGTH PROPERTIES 3.4.1 Finish Properties 3.4.1.1 Cold Flexibility, min. -35 C (SAE J323, Method A) The material must remain flexible and
20、, after bending at 180, it must exhibit no cracks. 3.4.1.2 Bally Flex (ASTM D 6182) No cracking of the surface finish with a 6X microscope when the sample is bent over a 12 +/- 2 mm mandrel in the direction of the test area. The following tests must be completed in addition to those required in the
21、Control Items, para. 3.2. Test to cracking Report number of cycles to nearest 10,000 After Humidity Aging 168 hrs at 70 +/- 2 C, 30,000 cycles 98% RH, (samples shall be suspended vertically in the test chamber) condition 24 hours at 23 +/- 2 C and 50% RH Or “W“ Flex Requirements, min (FLTM BN 102-02
22、) Cracking through the finish coating is not acceptable. - Original 100,000 cycles - After aging 225.6 kJ/m2(SAE J2412) 30,000 cycles - After aging 7 days at 100 C 30,000 cycles - After humidity aging 72 hrs at 38 C then re-measure and recalculate the loss in reflectance. 3.5.1.5.3 Test Method for S
23、usceptibility, min. Rating 4 of Trim Materials to Dye Ingress (FLTM BN 112-09, AATCC Procedure 2) ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 7 of 9 Note: Effective 2010 MY programs new requirements for dye suscept
24、ibility minimum AATCC Rating will be: Rating 3 before cleaning after Rating 4 - 5 cleaning (after 30 minutes and 24 hrs) OR 3.5.1.5.4 Resistance to Dye Transfer, min Rating 4 after cleaning (FLTM BN 112-11/ AATCC Evaluation Procedure 2) 3.5.1.6 Resistance to Cleaning Agents, Rating 4 max. discolorat
25、ion (FLTM BN 107-01, 10 cycles, AATCC Evaluation Procedure 2) Test Procedure: Substitute the leather for the textile material. Saturate white cotton cloth with the cleaners listed. Cleaners 1) Approved Brand Window Cleaner 2) Approved Brand All Purpose Cleaner 3) Isopropyl Alcohol/Deionised Water 50
26、% v/v 4) Approved Brand Leather Cleaner 5) Soap/water solution- 2% teepol L, 0.1% EDTA(Ethylene DiAmineTetra acetic acid Di sodium salt) in distilled water 3.5.1.7 Resistance to Crocking, min. (FLTM BN 107-01, AATCC Evaluation Procedure 2) Dry Rating 4 Wet Rating 4 3.5.1.8 Resistance to Migration St
27、aining (FLTM BN 103-01) No evidence of injurious exudation, adhesion (tackiness) separation or color transfer when placed face to face with itself and the standard vinyl test ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC
28、Page 8 of 9 3.6 WEAR PROPERTIES 3.6.1 Wear Resistance Testing 3.6.1.1 Resistance to Scuffing, min. No wear through to (SAE J365, Scuff head A, russet. 200 cycles) No permanent parallel deformation to the surface. Color change must be reviewed and approved by materials engineer. 3.6.1.2 Simulated Sea
29、t Wear No wear through the (FMVSS 209, S5.1(d), 10,000 cycles, finish to russet except replace the hexagonal steel rod with a 40 mm dia. round steel rod covered with 2 mm thick rubber sheet, 80 +/- 5 Shore A and abrade with No 8 cotton duck) Product Validation Only 3.6.1.3 Resistance To Pilling Wear
30、 5 minutes (FLTM BN 108-14, 89 N Load) Report time to wear For top coated leather only. through to the russet 3.7 FULLY PERFORATED LEATHER All perforated leather shall meet the full leather specification before perforation. All perforated leather/parts to be skived, perforated and flesh sealed. 3.7.
31、1 Resistance to Fiber Show Through None Visible Test Method: The test shall be conducted on a 305 mm x 305 mm area of original fully perforated leather seating surface. With moderate pressure, vacuum the entire surface for 1 minute using the vacuum cleaner specified in SAE J948 with 28 mm nozzle and
32、 maximum suction setting. The material shall be judged a failure if there is fiber show through to the surface. 3.7.2 Reduction in Breaking Strength after Perforation, max. 10% of original value (ASTM D 2208) 3.7.3 Reduction in Tear Strength after Perforation, max. 10% of original value (ASTM D 5733
33、) 3.7.4 Resistance to Scuffing No topcoat removed (SAE J365, Scuff Head A, from perforated area. 200 cycles) ENGINEERING MATERIAL SPECIFICATIONWSS-M99P43-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 9 of 9 3.8 LEATHER CONSTRUCTION Leather construction and spec
34、ific properties shall be specified in the individual material specification. The color, pattern, and finish shall match the approved Corporate Design master sample. Table 2 For Paragraphs New Color Approval New Construction Approval 3.2 Control Items 1 hide/color 10 hides 3.4 Strength Properties 3.4
35、.1 Finish Properties 3.4.1.1 Cold Flexibility 10 hides 3.4.1.2 Bally Flex or W-Flex 10 hides 3.4.2 Physical Properties 3.4.2.1 Breaking Strength 10 hides 3.4.2.2 Elongation at 400 N 10 hides 3.4.2.3 Tear Strength (Trapezoid) 10 hides 3.4.2.4 Seam Fatigue Resistance 10 hides 3.5 Color Properties 3.5.
36、1 General Acceptance Criteria 3.5.1.1 Resistance to Fade 1 hide/color 1 hide/color 3.5.1.2 Resistance to Fade 1 hide/color 1 hide/color 3.5.1.3 Resistance to Heat Aging 1 hide/color 1 hide/color 3.5.1.4 Resistance to Humidity Aging 1 hide/color 1 hide/color 3.5.1.5 Soiling and Cleanability 1 hide/co
37、lor 1 hide/color 3.5.1.6 Resistance to Cleaning Agents 1 hide/color 1 hide/color 3.5.1.7 Resistance to Crocking 1 hide/color 1 hide/color 3.5.1.8 Resistance to Migration Staining 1 hide/color 1 hide/color 3.6 Wear Properties 3.6.1 Wear Resistance Testing 3.6.1.1 Resistance to Scuffing 1 hide/color 1
38、0 hides 3.6.1.2 Simulated Seat Wear 1 hide/color 10 hides 3.6.1.3 Resistance to Pilling Wear 1 hide/color 10 hides 3.7 Fully Perforated Leather 3.7.1 Resistance to Fiber Show Through 1 hide/color 3.7.2 Reduction in Breaking Strength after Perf. 1 hide/color 3.7.3 Reduction in Tear Strength after Perforation 1 hide/color 3.7.4 Resistance to Scuffing 1 hide/color
