1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 08 19 N-STATUS Replaced by WSS-M1F30-B M. Dumitrescu, NA 2007 02 02 Revised Heading of paragraph 3.3.4.4.2 M. Dumitrescu 2006 11 10 Activated M. Dumitrescu Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page
2、 1 of 9 LEATHER, SPECIALITY, FULL GRAIN, WSS-M1F30-A ANILINE, CHROME TANNED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a full grain, selection “A“, steer hide which has been tanned and softened to provide maximum seating comfort without sacrificing the leath
3、ers remaining physical properties. 2. APPLICATION This specification was released originally for material used as interior trim leather. Perforated leather must also meet requirements of para 3.6, achieved by using a sealer known as flesh coating, to bind any loose fibers and to ensure flesh side fi
4、bers will not be visible through perforation holes on the A surface. Under no circumstances shall this leather be subjected to steam heat, water or organic solvents or cleaners during manufacturing process No correcting or repair of any kind shall be allowed including but not limited to buffing, fil
5、ling or stuccoing. 2.1 LIMITATIONS Full Aniline Leather is a natural product which has not been finished and hence no color coating, thus will wear, stain, fade and transfer color in excess of traditional to coated leather and may lead to high TGWs and warranty claims. 3. REQUIREMENTS 3.1 STANDARD R
6、EQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHANGE CONTROL/CONTROL ITEMS Control items must be run per the matrix below for the initial approval. Test specimens must be ta
7、ken 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 the rest of the specification and be submitted to Materials Engineering and North American Seat Engineering. Once the leather is constructi
8、on 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 submitted to Materials Engineering and North American Seat Engineering before Ingress/Egress testing (ST-0035) is approved. Control items must be t
9、ested 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 submitted to North American Seat Engineering upon request. After the review and sign-off of the control documents (PFMEA, CP and SPC
10、 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 Engineering representatives. Other testing in this specification is for initial approval or on an “as requested“ basis and is not required for annu
11、al recertification. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-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 for physical testing of leather samples. Figure 1 and Figure 2 below show where the sampl
12、es 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 as received 10 hides 6 hides 1 hide Bally Flex heat aged 24 hours at 100 C 10 hides 6 hides 1 hide Soft
13、ness 10 hides 5 locations 6 hides 5 locations 1 hide 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 comple
14、te all of the testing then additional hides must 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-M1F30-A Printed copies are uncontrolled Copyr
15、ight 2010, Ford Global Technologies, LLC Page 3 of 9 3.2.1 Bally Flex (ASTM D 6182) No cracking of the surface with a 6X microscope Original 100,000 cycles After aging 24 hours at 100 +/- 2 C 60,000 cycles 3.2.2 Softness, mm 4.0 minimum (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diame
16、ter (nominal) aperture) Per Ford Color and Materials Design/Mastering approved master hide. 3.2.3 Thickness, mm, range 1.5 2 mm (ASTM D 1813) Ford Color and Materials Design/Mastering approved master hide. These values must be reported on the construction package. 3.2.4 Construction Complete Supplem
17、ent A 3.3 ADDITIONAL REQUIREMENTS General information items must be determined from 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 rep
18、resentative may request individual retests on an “as needed“ basis. New colors of existing technologies should be tested to paragraphs Color Properties, Fogging and Flammability as required by AVT-T113-06. 3.3.1 Sample Selection Samples for testing shall be selected from the backbone and belly area
19、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 the test matrix. Untested areas of the hide must be submitted so that the hide can be reconstructed to view wher
20、e the samples were taken. Test 10 pieces per backbone and belly except for paragraphs Color Properties, Odor, Fogging and Flammability or where the test method determines the sample size. 3.3.2 Appearance and Physical Attributes 3.3.2.1 Appearance (FLTM BI 109-01) Ford Color and Materials Design/Mas
21、tering shall determine and approve the color, grain, visual aesthetics, hand and finish of the leather. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 9 3.3.2.2 Grade Aniline leather with no surface finish. There
22、is no based coat or top coat applied to a full aniline hide, thus all of natures marks are fully visible. The leather must be through dyed to a sufficient depth to prevent un-dyed fibers from showing through after sewing. No correcting or repair of any kind shall be allowed including but not limited
23、 to buffing, filling or stuccoing. 3.3.3 Physical 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 with a 6X microscope. The following
24、 tests 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, 98% RH, 30,000 cycles (samples shall be suspended vertically in the test chamber and should be conditioned at 23 +/- 3 C and 50 +/- 5% RH f
25、or 24 hours prior to Bally Flex) 3.3.3.3 Breaking Strength, min (ASTM D 2208, 10 samples, two locations) Any direction 900 N 3.3.3.4 Elongation at 400 N, max 60% (ASTM D 2208, 10 samples, two locations) 3.3.3.5 Tear Strength (Trapezoid), min 200 N (ASTM D 5733, Average the total load of the five hig
26、hest peaks. Avg. 10 samples, any direction) 3.3.3.6 Seam Fatigue Resistance (FLTM BN 106-02, average of 10 samples, each direction) Needle hole elongation after test, max 3 mm ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC
27、Page 5 of 9 3.3.3.7 Shrinkage, max. 6.0% (FLTM BN 105-03, except Heat Cycle 100 C, max, 3 cycles) 3.3.3.8 Stretch and Set (SAE J855) Stretch, max 30 Set, max 15 3.3.4 Color Properties General Acceptance Criteria: The material shall not exhibit any change in appearance such as color change, tone chan
28、ge, fading or gloss change in excess of the required AATCC rating. In addition, the material shall not exhibit staining, blistering, flaking, chipping, checking, chalking, cracking, splits, sinks, bulges, peeling, tackiness or delaminating. 3.3.4.1 Resistance to Fade (FLTM BO 116-01, ISO 105-A02/ AA
29、TCC Evaluation Procedure 1) 902.4 kJ/m2Rating 3 In addition, the material must remain flexible and exhibit no cracking when bent around a 6.4 mm mandrel. 3.3.4.2 Resistance to Heat Aging, min Rating 4 (7 days at 100 +/- 2 C, ISO 105-A02/ AATCC Evaluation Procedure 1) 3.3.4.3 Environmental Cycling Ra
30、ting 3 -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 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 3.3.4.4 Soil
31、ing and Cleanability 3.3.4.4.1 Soiling and Cleanability (FLTM BN 112-08, ISO 105-A02/ AATCC Evaluation Procedure 1) After Cleaning, min Rating 3 ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 9 3.3.4.4.2 Degree of
32、 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 a mild soap solution (e.g. Ford Deluxe Vinyl and
33、Leather Cleaner, ZC-11-A); then re-measure and recalculate the loss in reflectance. 3.3.4.4.3 Test Method for Susceptibility Rating 4, min of Trim Materials to Dye Ingress (FLTM BN 112-09, AATCC Procedure 1) 3.3.4.5 Resistance to Cleaning Agents, Max discoloration (FLTM BN 107-01, 10 cycles, AATCC E
34、valuation 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 (10 cycles) Rating 3 2) Isopropyl Alcohol/Water 50% v/v (5 cycles) Rating 2 3) Vinyl and Leather Cleaner ZC-11-A (10 c
35、ycles) Rating 3 3.3.4.6 Resistance to Crocking Wet/Dry: Rating 4 (FLTM BN 107-01, AATCC Evaluation Procedure 2). 3.3.4.7 Resistance to Migration Staining (FLTM BN 103-01 AATCC Evaluation Procedure 2). No evidence of injurious exudation, adhesion (tackiness) separation or color transfer when placed f
36、ace to face with itself and with the standard vinyl. 3.4 ODOR, max Rating 2 (FLTM BO 131-01) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 7 of 9 3.5 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute 3.6 A
37、DDITIONAL REQUIREMENTS FOR 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. 3.6.1 Resistance to Fiber Show Through None Visible Test Method: The test shall be conducte
38、d 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 maximum pressure setting (100% Vacuum using Taber Test Vacuum), ensuring that there is
39、 sufficient air flow through the perforation . The material shall be judged a failure if there is fiber show through to the surface. 3.6.2 Reduction in Breaking Strength after Perforation Maximum loss: 10% (ASTM D 2209) 3.6.3 Reduction in Tear Strength after Perforation Maximum loss: 10% (ASTM D 573
40、3) 3.7 LEATHER FUNCTIONAL PROPERTIES The leather approved to this material specification 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 re
41、quire unique functional evaluations such as those required in the Interior Trim (IT) 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 satisfa
42、ction and long term durability. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RESISTANCE TO PILLING WEAR Report change of (FLTM BN 108-14, 89 N load, 5 minutes) surface appearance Gloss change/bu
43、rnishing acceptable, but no damage through the grain into the underlying russet. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 8 of 9 4.2 WEAR RESISTANCE 4.2.1 Resistance to Scuffing Rating 5 (SAE J365, Specimen Holde
44、r E-36) 200 cycles The surface shall show wear, and the color of the scuffed area shall be acceptable in appearance according to the attribute rating system in Table 2. No permanent parallel deformation to the surface. 4.2.2 Resistance to Taber Abrasion Rating 1 (SAE J948, CS-10 Wheel, 1,000 g load
45、1,000 cycles) The surface shall show wear, and the color of the abraded area shall be acceptable in appearance according to the attribute rating system on Table 2. No permanent parallel deformation to the surface. Table 2 ATTRIBUTE RATING SYSTEM Rating Tips Ratings should reflect critical customer e
46、xpectations. Customer expectations may vary due to specific market class, segment or model. Ratings are restricted to your observations made during the evaluation. 4.3 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
47、 tester) 4.4 COEFFICIENT OF FRICTION Measure and Report (ASTM D 1894 or mutually agreed upon equivalent) Engineering Rating Index 1 2 3 4 5 6 7 8 9 10 Evaluation of Attribute Performance Not Acceptable Poor Border- Line Acceptable Fair Good Very Good Excellent Customer Satisfaction (for the attribut
48、e) Very Dissatisfied Some what dissatisfied Fairly Well Satisfied Very Satisfied Completely Satisfied Improvement Desired by All Customers Average Customer Critical Customer Trained Observer Not Perceptible ENGINEERING MATERIAL SPECIFICATIONWSS-M1F30-A Printed copies are uncontrolled Copyright 2010,
49、 Ford Global Technologies, LLC Page 9 of 9 4.5 FOGGING 4.5.1 Method A: Photometric Procedure (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 45 If oily droplets, crystals or clear film are present and the fog number is greater than 45 sample must be retested per para 4.5.2. If the fog number is less than 45, the material is rejected. 4.5.2 Method B: Gravimetric Procedure 7 mg (SAE J1756, 16 h at 100 C heating, 21 C cooling plate, post test conditioning, 4 h) Supplement A Crust C
