1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Ver 52010 01 28 N-STATUS Replaced by WSS-M1F29-B, WSS-M1F28-B and WSS-M99P43-B J. Williams 2008 06 26 Revised Revised 3.2.3, 3.3.5.3, 3.3.6.1 control of these items must be represented in the PFMEA and control plan. These results must be readi
2、ly available 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 Sea
3、t Engineering 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-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pag
4、e 2 of 10 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 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 A
5、pproval 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 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 loc
6、ations 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 HGJK along both sides of the back bone. If not enough samples can be taken to complete all of the testing then additional hide
7、s 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-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, L
8、LC Page 3 of 10 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 100,000 cycles After aging 24 hours at 100 +/- 2 C 60,000 cycles 3.2.2 Finish Adhesion after Bally Flex
9、, min. 3.5 N (ASTM D 6182 followed by IUF 470/ISO 11644) 3.2.3 Resistance To Pilling Wear, minimum 5 minutes (FLTM BN 108-14, 89 N Load) No 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) WSS-M1F28-A1, min. 3.5 aver
10、age per hide WSS-M1F28-A2, min. 4.0 average per hide Initial approval requires measurements from ten hides taken in the five locations indicated in FLTM BN 157-01. The average of the five points on each hide must be 3.5 (WSS-M1F28-A1) or 4.0 (WSS-M1F28-A2) minimum. The leather quality, grain definit
11、ion and specific softness will be determined by the Hand and Appearance Master Hide, as approved by Color and Materials Design/Mastering. 3.2.5 Thickness, mm, range 1.0 - 1.4 (ASTM D 1813) Initial approval requires measurements from ten hides taken in the five locations indicated in FLTM BN 157-01.
12、The leather quality, grain definition and specific thickness will be determined by the Hand and Appearance Master Hide, as approved by Color and Materials Design/Mastering. 3.2.6 Finish Coating Complete Supplement A 3.3 ADDITIONAL REQUIREMENTS General information items must be determined from a lot
13、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 existing
14、 technologies must test to paragraphs Color Properties, Fogging and Flammability as required by AVT-T113-06. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 10 3.3.1 Sample Selection Samples for testing shall b
15、e 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 the test matrix. Untested areas of the hide must be submitted so tha
16、t the hide can be reconstructed to view where 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
17、 109-01) The leather quality, grain definition, specific softness and specific thickness will be determined by the Hand and Appearance Master Hide, as approved by Color and Materials Design/Mastering. 3.3.2.2 Grade Leather dyed with finish coating applied. The leather must be through dyed to a suffi
18、cient depth to prevent un-dyed fibers from showing through after sewing. Also, the color of the dye 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 sha
19、ll show no defects or surface blemishes affecting the appearance of the material, such as brush marks 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
20、.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 Control Items, para. 3.2. ENGINEERING MATERIAL SPECIFICA
21、TIONWSS-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 10 Test to cracking Report number of cycles to nearest 10,000 After Humidity Aging 72 hrs at 38 +/- 2 C, 30,000 cycles 98% RH, (samples shall be suspended vertically in the test chamber) condi
22、tion 24 hours at 23 +/- 2 C and 50% RH 3.3.4 Physical Properties 3.3.4.1 Breaking Strength, min. (ASTM D 2208, ten samples from two locations) Any direction 400 N 3.3.4.2 Elongation at 400 N, max. 60% (ASTM D 2208, ten samples from two locations) 3.3.4.3 Tear Strength (Trapezoid), min. 44 N (ASTM D
23、5733, ten samples from two locations, average the ten highest peaks) 3.3.4.4 Seam Fatigue Resistance (FLTM BN 106-02, ten samples from two locations) Needle hole elongation after test, max 1 mm 3.3.4.5 Shrinkage, max. 6.0% (FLTM BN 105-03, except Heat Cycle 100 C, max, 3 cycles) 3.3.4.6 Stretch and
24、Set (SAE J855) Stretch, max 30% Set, max 15% 3.3.5 Wear Resistance Testing 3.3.5.1 Resistance to Scuffing, min. Rating 6 (SAE J365, Specimen Holder E-36, 200 cycles) The surface shall show no evidence of wear through, and the color of the scuffed area shall be acceptable in appearance according to t
25、he attribute rating system in Table 2. No permanent parallel deformation to the surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 10 3.3.5.2 Resistance to Taber Abrasion, min. Rating 6 (SAE J948, CS-10 W
26、heel, 1,000 g load 1,000 cycles) The surface shall show no evidence of wear through, and the color of the abraded area shall be acceptable in appearance according to the attribute rating system in Table 2. No permanent parallel deformation to the surface. 3.3.5.3 Resistance To Pilling Wear, minimum
27、5 minutes (FLTM BN108-14, 89 N load) Report time to wear through to russet 3.3.6 Color Properties General Acceptance Criteria: The material shall not exhibit any change in appearance such as color change, tone change, fading or gloss change in excess of the required AATCC rating. In addition, the ma
28、terial shall not exhibit staining, blistering, loss of coating adhesion, flaking, chipping, checking, chalking, cracking, splits, sinks, bulges, peeling, tackiness or delaminating. 3.3.6.1 Resistance to Fade, min. (FLTM BO 116-01, ISO 105-A02/ AATCC Evaluation Procedure 1) 977.6 kJ/m2Rating 4 In add
29、ition, the material must remain flexible and exhibit no cracking when bent around a 6.4 mm mandrel. 3.3.6.2 Resistance to Heat Aging, min. Rating 4 (7 days at 100 +/- 2 C, ISO 105-A02/ AATCC Evaluation Procedure 1) 3.3.6.3 Environmental Cycling, min. Rating 4 (AATCC Evaluation Procedure 1) 5 h at -4
30、0 +/- 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 ENGINEERING MATERIAL SPECIFICATIONWSS-M1F28-A1/A2 Printed copi
31、es are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 7 of 10 3.3.6.4 Soiling and Cleanability 3.3.6.4.1 Soiling and Cleanability, min. (FLTM BN 112-08, ISO 105-A02/ AATCC Evaluation Procedure 1) After Cleaning Rating 3 3.3.6.4.2 Degree of Soil Transfer to Leather (FLTM BN 112-03) S
32、oiling, 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 non-abrasive sponge that has been immersed in a mild soap solution (e.g. Ford Deluxe Vinyl and Leather Cleaner, ZC-11-A); then re-measur
33、e and recalculate the loss in reflectance. 3.3.6.4.3 Test Method for Susceptibility, min. Rating 4 of Trim Materials to Dye Ingress (FLTM BN 112-09, AATCC Procedure 1) 3.3.6.5 Resistance to Cleaning Agents, Rating 4 max. discoloration (FLTM BN 107-01, 10 cycles, AATCC Evaluation Procedure 2) Test Pr
34、ocedure: 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) Vinyl and Leather Cleaner ZC-11-A 3.3.6.6 Resistance to Crocking, min. Wet/Dry: Rating 4
35、(FLTM BN 107-01, AATCC Evaluation Procedure 2) 3.3.6.7 Resistance to Migration Staining (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-M1F28-
36、A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 8 of 10 Table 2. ATTRIBUTE RATING SYSTEM 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 Satis
37、faction (for the attribute) 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 Rating Tips Ratings should reflect critical customer expectations. C
38、ustomer expectations may vary due to specific market class, segment or model. Ratings are restricted to your observations made during the evaluation. 3.4 ODOR, max (FLTM BO 131-03) Rating 3 or (SAE J1351) Rating 3 Test report must state method used. 3.5 FOGGING 3.5.1 Method A: Photometric Procedure
39、(SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min. 60 If oily droplets, crystals or clear film are present and the fog number is greater than 60, sample must be retested per Method B. If the fog number is less than 60, the material is rejected. 3.5.2
40、Method B: Gravimetric Procedure, max. 5 mg (SAE J1756, 16 h at 100 C heating, 21 C cooling plate, post test conditioning, 4 h) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max. 100 mm/minute ENGINEERING MATERIAL SPECIFICATIONWSS-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Glo
41、bal Technologies, LLC Page 9 of 10 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. 3.7.1 Resistance to Fiber Show Through None Visible Test Method: The test shall
42、 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 maximum suction setting. The material shall be judged a failure if there i
43、s fiber show through to the surface. 3.7.2 Reduction in Breaking Strength after Perforation, max. 10% (ASTM D 2209) 3.7.3 Reduction in Tear Strength after Perforation, max. 10% (ASTM D 5733) 3.8 LEATHER FUNCTIONAL PROPERTIES The leather approved to this material specification must meet all the wear
44、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 (IT) SDS. These tests should be
45、evaluated by a cross-functional team 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 is provided for clarification and a
46、ssistance 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) 4.2 COEFFICIENT OF FRICTION Report value (ASTM D1894 or mutually agreed upon equivalent) 4.3
47、 DROP IMPACT TEST FOR FINISHED LEATHERS No cracking (DVM-0090-MA) 4.4 BALLY FLEX AFTER WEATHERING (ASTM D 6182) After aging 451.2 kJ/m230,000 cycles (FLTM BO 116-01) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F28-A1/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1
48、0 of 10 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.
