1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 08 19 N-STATUS Replaced by WSS-M1F27-B M. Dumitrescu, NA 2007 07 31 Activated M. Dumitrescu Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 9 LEATHER, LUXURY, GENUINE TOP GRAIN, SEMI-ANILINE, WSS-M1
2、F27-A1 CHROME TANNED LEATHER, LUXURY, GENUINE TOP GRAIN, SEMI-ANILINE, WSS-M1F27-A2 CHROME FREE TANNED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is finished, full grain, selection “A“, steer hide which has been tanned and softened to provide maximum seating
3、comfort without sacrificing the leathers remaining physical properties. 2. APPLICATION These specifications were released originally for material used as interior trim leather. Perforated leather must also meet requirements of para 3.7, achieved by using a sealer known as flesh coating, to bind any
4、loose fibers and to ensure flesh side fibers will not be visible thru perforation holes on the A surface. Because the hand and appearance characteristics will be adversely affected, the leather shall not be subjected to steam heat or organic solvents during any manufacturing process except as specif
5、ied below. No correcting or repair of any kind shall be allowed including but not limited to buffing, filling or stuccoing. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Mater
6、ials (WSS-M99P1111-A). 3.2 CONTROL ITEMS Control items must be run per the matrix below 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 Approval Control Items and
7、the rest of the specification and be submitted to Materials Engineering and North American 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 submitte
8、d to Materials Engineering and North American 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 availab
9、le and submitted to North American Seat Engineering upon request. After the review and sign-off of the control documents (PFMEA, CP and SPC data) for a significant number of lots, the frequency of the testing can be reduced as agreed upon by the Materials Engineering and North American Seat Engineer
10、ing representatives. Other testing in this specification is for initial approval or on an “as requested“ basis and is not required for annual recertification. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 9 T
11、he location of the test samples is described in IUP/2 for physical 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/
12、PV Ingress/Egress Production Bally Flex as received 10 hides 6 hides 1 hide Bally 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 10 hides 6 hides 1 hide Softness 10 hides 5 locations 6 hides 5 locations 1 hi
13、de 5 locations Thickness 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 H, G, J, K along both sides of the back bone. If enough samples cannot be taken to complete all of the testing then additional hides mu
14、st be used. Figure 2: Belly testing, test samples must be taken between the edge of the hide and line US. The size is to be adjusted to fit the appropriate test specimen. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC P
15、age 3 of 9 3.2.1 Bally Flex (ASTM D 6182) No cracking of the surface finish with a 6X microscope. Original 100,000 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,
16、minutes Report time to (FLTM BN 108-14, 89 N Load) wear through to the russet. 3.2.4 Softness, mm (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diameter (nominal) aperture) Per Ford Color and Materials Design/Mastering approved master hide. These values must be reported on the constructi
17、on package. 3.2.5 Thickness, mm, range (ASTM D 1813) Per Ford Color and Materials Design/Mastering approved master hide. These values must be reported on the construction package. 3.2.6 Finish Coating Complete Supplement A 3.3 ADDITIONAL REQUIREMENTS General information items must be determined from
18、 a lot of material where the manufacturing process is under statistical control. Once these parameters are established no annual recertification is necessary unless the process has shifted. A materials engineering representative may request individual retests on an “as needed“ basis. New colors of e
19、xisting technologies must test to paragraphs 3.3.5, 3.5 and 3.6 as required by AVP-T113-06. 3.3.1 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
20、 hide, as is the manufacturing process. Sample locations must be noted on 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. Test 10 pieces per backbone and belly except for paragraphs 3.3.5, 3.4, 3.5 and 3.6 wher
21、e the test method determines the sample size. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 9 3.3.2 Appearance and Physical Attributes 3.3.2.1 Appearance (FLTM BI 109-01) Ford Color and Materials Design/Maste
22、ring shall determine and approve the color, grain, visual aesthetics, hand and finish of the leather. 3.3.2.2 Grade Leather dyed with finish coating applied. The leather must be through dyed to a sufficient depth to prevent un-dyed fibers from showing through after sewing. Also, the color of the dye
23、 must be compatible in appearance with the surface coating. No correcting or repair of any kind shall be allowed including but not limited to buffing, filling or stuccoing. 3.3.2.3 Finish All hides shall show no defects or surface blemishes affecting the appearance of the material, such as brush mar
24、ks or stops and bad flows. 3.3.3 Finish Properties 3.3.3.1 Cold Flexibility, min -35 C (SAE J323, Method A) The material must remain flexible and after bending at 180, it must exhibit no cracks. 3.3.3.2 Bally Flex (ASTM D 6182) No cracking of the surface finish with a 6X microscope. The following te
25、sts must be completed in addition to those required in the Control Items, para. 3.2. Until Cracking Occurs Report cycles After Humidity Aging 72 hrs at 38 C, 30,000 cycles 98% RH, (samples shall be suspended vertically in the test chamber and should be conditioned at 23 +/- 3 C and 50 +/- 5% RH for
26、24 hours prior to Bally Flex) 3.3.4 Physical Properties 3.3.4.1 Breaking Strength, min (ASTM D 2208, 10 samples two locations) Any direction 400 N ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 9 3.3.4.2 Elong
27、ation at 400 N, max 60% (ASTM D 2208, 10 samples two locations) 3.3.4.3 Tear Strength (Trapezoid), min 44 N (ASTM D 5733, Average the total load of the five highest peaks. Avg. 10 samples, any direction) 3.3.4.4 Seam Fatigue Resistance (FLTM BN 106-02, average of 10 samples, each direction) Needle h
28、ole elongation after test, max 3 mm 3.3.4.5 Shrinkage, max. 5% (FLTM BN 105-03, except Heat Cycle 100 C, max, 3 cycles) 3.3.4.6 Stretch and Set (SAE J855) Stretch, max 15% Set, max 5% 3.3.5 Color Properties General Acceptance Criteria: The material shall not exhibit any change in appearance such as
29、color change, tone change, fading or gloss change in excess of the required AATCC rating. In addition, the material shall not exhibit staining, blistering, loss of coating adhesion, flaking, chipping, checking, chalking, cracking, splits, sinks, bulges, peeling, tackiness or delaminating. 3.3.5.1 Re
30、sistance to Fade (FLTM BO 116-01, ISO 105-A02/ AATCC Evaluation Procedure 1) 902.4 kJ/m2Rating 4 In addition, the material must remain flexible and exhibit no cracking when bent around a 6.4 mm mandrel. 3.3.5.2 Resistance to Heat Aging, min Rating 4 (7 days at 100 +/- 2 C, ISO 105-A02/ AATCC Evaluat
31、ion Procedure 1) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 9 3.3.5.3 Environmental Cycling Rating 4 (AATCC Evaluation Procedure 1) 5 h at -40 +/- 2 C 30 min at 23 +/- 2 C and 50% R.H. 5 h at 90 +/- 2 C 30
32、 min at 23 +/- 2 C and 50% R.H. 2 h at 50 +/- 2 C and 95 +/- 5% R.H. 30 min at 23 +/- 2 C and 50% R.H. 5 h at -40 +/- 2 C 30 min at 23 +/- 2 C and 50% R.H. 5 h at 90 +/- 2 C 3.3.5.4 Soiling and Cleanability 3.3.5.4.1 Soiling and Cleanability (FLTM BN 112-08, ISO 105-A02/ AATCC Evaluation Procedure 1
33、) After Cleaning, min Rating 3 3.3.5.4.2 Degree of Soil Transfer to leather (FLTM BN 112-03) Soiling, max 15% loss in reflectance Cleanability, max 5% loss in reflectance Cleanability Method: Rub back and forth ten times on the soiled specimen with a soft nonabrasive sponge that has been immersed in
34、 a mild soap solution (e.g. Ford Deluxe Vinyl and Leather Cleaner, ZC-11-A); then re-measure and recalculate the loss in reflectance. 3.3.5.4.3 Test Method for Susceptibility Rating 4, min of Trim Materials to Dye Ingress (FLTM BN 112-09, AATCC Procedure 1) 3.3.5.5 Resistance to Cleaning Agents, Rat
35、ing 4 Max discoloration (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) Window cleaner with ammonia 2) Isopropyl Alcohol/Water 50% v/v (5 cycles, Rating 3) 3)
36、Vinyl and Leather Cleaner ZC-11-A ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 7 of 9 3.3.5.6 Resistance to Crocking Wet/Dry: Rating 4 (FLTM BN 107-01, AATCC Evaluation Procedure 2). 3.3.5.7 Resistance to Migrati
37、on Staining Rating 4 (FLTM BN 103-01 AATCC Evaluation Procedure 2). No evidence of injurious exudation, adhesion (tackiness) separation or color transfer when placed fact to face with itself and the standard vinyl test 3.3.6 Wear Resistance Testing 3.3.6.1 Resistance to Scuffing No wear through (SAE
38、 J365, Specimen Holder E-36, to russet 200 cycles) No permanent parallel deformation to the surface. Color change must be reviewed and approved by materials engineer. 3.3.6.2 Resistance to Taber Abrasion No wear through (SAE J948, CS-10 Wheel, torusset 1,000 g load, 1,000 cycles) No permanent parall
39、el deformation to the surface. Color change must be reviewed and approved by materials engineer. 3.4 ODOR, max Rating 2 (FLTM BO 131-01) 3.5 FOGGING 3.5.1 Method A: Photometric Procedure (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 60 If oily dro
40、plets, crystals or clear film are present and the fog number is greater than 60 sample must be retested per para 3.5.2. If the fog number is less than 60, the material is rejected. 3.5.2 Method B: Gravimetric Procedure 5 mg (SAE J1756, 16 h at 100 C heating, 21 C cooling plate, post test conditionin
41、g, 4 h) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 8 of 9 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute 3.7 ADDITIONAL REQUIREMENTS FOR FULLY PERFORATED LEATHER All perforated leather shall
42、meet the full leather specification before perforation. All perforated leather/parts to be skived, perforated and flesh sealed. 3.7.1 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.
43、 With moderate pressure, vacuum the entire surface for 1 minute using the vacuum cleaner specified in SAE J948 with 28 mm nozzle and 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 M
44、aximum loss: 10% (ASTM D 2209) 3.7.3 Reduction in Tear Strength after Perforation Maximum loss: 10% (ASTM D 5733) 3.7.4 Resistance to Scuffing No topcoat removed (SAE J365, Scuff Head A, from perforated area. 200 cycles) 3.8 LEATHER FUNCTIONAL PROPERTIES The leather approved to this material specifi
45、cation must meet all the wear and process capability tests required for all seating applications in the Seat (ST) SDS and specifically the Ingress/Egress testing per ST-0035. In addition, other trim applications may require unique functional evaluations such as those required in the Interior Trim (I
46、T) SDS. These tests should be evaluated by a cross-functional team prior per the SDS to assess the effects of the leather selection, seat style, sew style, foam hardness, etc. on the predicted level of customer satisfaction and long term durability. 4. GENERAL INFORMATION The information given below
47、 is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 STIFFNESS Measure and Report (ASTM D 747, direct reading at 60 angle with 0.01 N-m moment weight on a 0.7 N-m Tinius Olsen stiffness tester) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F27-A1/A2 Printe
48、d copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 9 of 9 4.2 COEFFICIENT OF FRICTION Report value (ASTM D 1894 or mutually agreed upon equivalent) 4.3 DROP IMPACT TEST FOR FINISHED LEATHERS No cracking (DVM-0090-MA) 4.4 BALLY FLEX AFTER AGING 450 kJ/m230,000 cycles (FLTM B
49、O 116-01) Supplement A Crust Coating Layer 1 Coating Layer 2 Coating Layer 3 Chemistry % Volume Solids Solvent Package VOC Coating Weight Wet Coating Weight Dry Coating Thickness (total thickness) Time between application of each coating layer Bake Time Bake Method Fat Content of the Crust Moisture Content of the Crust PH Value Pigmentation: List below the pigments used to obtain the color.
