1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 28 N-STATUS Replaced by WSS-M1F29-B, WSS-M1F28-B and WSS-M99P43-B J. Williams2005 02 03 Activated L. George, J Williams Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 6 LEATHER, GENUINE, CHROME
2、TANNED OR CHROME FREE WSS-M1F26-A TANNED, SUPPLE, MILLED NOT FOR USE IN NORTH AMERICA NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification is commonised for use by Ford Motor Company, Jaguar and Land Rover. The materials defined by this specification are finished, full grain or corrected grain,
3、 selection A steer hides which have been tanned to retain the natural odour of the leather and softened to provide maximum seating comfort without sacrificing the leathers remaining physical properties. 2. APPLICATION These specifications were released originally for material used as interior trim l
4、eather, excluding instrument panel covers, steering wheels. Because the hand and appearance characteristics will be adversely affected, the leather shall not be subjected to steam or radiant heat or organic solvents during any manufacturing process except as specified below. Corrected grain leather
5、shall be snuffed using one pass of 320 grit paper. The method of correction will be agreed with Purchasing and Materials and Body Engineering. 3. REQUIREMENTS For all test methods, no individual specimen shall fall below the minimum values specified herein. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION M
6、ATERIALS 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 shall be selected no closer than 80 mm from edge of the hide. 3.3 APPEARANCE (FLTM BI 109-01) The color, grain, visual
7、 aesthetics, hand and finish shall match the approved Design Center master sample, or shall be as specified on the engineering drawing. 3.4 GRADE The leather must be through dyed to prevent undyed fibers from showing through after sewing or perforation. Also, the colour of the dye must be compatible
8、 in appearance with the surface coating. No stuccoing. 3.5 FINISH All hides shall show no paint defects or surface blemishes affecting the appearance of the material, such as brush marks or stops and bad flows. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F26-A Printed copies are uncontrolled Copyright 2
9、010, Ford Global Technologies, LLC Page 2 of 6 3.6 THICKNESS, mm, range 1.0 - 1.4 (ASTM D 1813) 3.7 BREAKING STRENGTH, min (ASTM D 2209) Any direction 125N 3.8 ELONGATION at break 30 70% (ASTM D 2211) 3.9 ELONGATION AT 100N LOAD, min 15 40% (ASTM D 2209) 3.10 TEAR STRENGTH, min (ASTM D 5733) Any dir
10、ection 70 N 3.11 SEAM FATIGUE RESISTANCE (FLTM BN 106-02, average of 3 samples, any direction) Needle hole elongation after test, max 1 mm 3.12 COLOR PROPERTIES General Acceptance Criteria: The material shall not exhibit any change in appearance, such as colour, tone change, fading or gloss change i
11、n 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 delamination. 3.12.1 Resistance to Fade (SAE J1885, ISO 105-A02/ AATCC Eval
12、uation Procedure 1) 225.6 kJ/m2Rating 4 488.8 kJ/m2Rating 3 In addition, the material must remain flexible and exhibit no cracking when bent around a 2.5 mm mandrel. 3.12.2 Resistance to Heat Ageing, min Rating 4 (7 days at 100 +/- 2 C, ISO 105-A02/ AATCC Evaluation Procedure 1) The heat-aged sample
13、 shall not exhibit color tone change in excess of the above rating or excessive gloss change greater than the sample originally approved by Materials Engineering. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F26-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 3
14、.12.3 Soiling and cleanability, min (FLTM BN 112-08, ISO 105-A02/ After Cleaning, min Rating 4 Evaluation according to the AATCC Evaluation Procedure 2. 3.12.4 Resistance to cleaning agents, max discoloration Rating 4 - 5 (FLTM BN 107-01, 10 cycles) Test Procedure: Substitute the leather for the tex
15、tile material. Saturate white cotton cloth with the cleaners listed. Evaluation according to the AATCC Evaluation Procedure 2. Cleaners (see also para 4.1) 1) Window cleaner with ammonia 2) All Purpose Cleaner 3) Isopropyl Alcohol/Water 50% v/v 4) Approved Brand leather cleaner 5) Soap Solution 3.12
16、.5 Crocking Test, min (FLTM BN 107-01) Dry Rating 4 - 5 Wet Rating 4 - 5 Evaluation according to the AATCC Evaluation Procedure 2. 3.12.6 Resistance to Migration Staining (FLTM BN 103-01) After test, the specimens and the accessory test materials must not show any surface deterioration, change in co
17、lor tone (hue), or any other defects and they must be equal to or better than the sample originally approved by Materials Engineering. In addition there shall be no evidence of injurious exudation, adhesion (tackiness), separation or color transfer when placed face to face with itself and the standa
18、rd vinyl test material. 3.12.7 Perspiration Staining, min (ISO 11640/AATCC Evaluation Procedure 1) Use both acid and alkaline perspiration solutions acc. FLTM BN 107-01 3.12.7.1 Sample as received Rating 4 3.12.7.2 Sample after Fade Resistance Acc. Para 3.12.1: 225.6kJ/m2Rating 4 3.12.7.3 Sample aft
19、er heat ageing Acc. Para 3.12.2 Rating 4 3.12.8 Resistance to Dye Transfer, min Rating 4 - 5 (FLTM BN 112-11/AATCC Evaluation Procedure 2) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F26-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 6 3.13 MATERIAL EMISSIONS I
20、N COMPARTMENT AIR 3.13.1 Fogging Method A: Photometric Procedure (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 70 If oily droplets, crystals or clear film are present and the fog number is greater than 70, sample must be retested per para 3.15.2.
21、If the fog number is less than 70, the material is rejected. 3.13.2 Method B: Gravimetric Procedure (SAE J1756, 16 h at 100 C heating, 21 C cooling plate, post test conditioning, 4 h) Samples shall be predried by storing in a dessicator over phosphorous pentoxide or silica gel or equivalent for a pe
22、riod of 7 days. Weight of Condensate, max 5 mg 3.13.3 Odor, max Rating 3 (FLTM BO 131-03) 3.14 COLD FLEXIBILITY, min -30 C (SAE J323, Method A) The material must remain flexible and after bending around a 2.5mm mandrel, it must exhibit no cracks. 3.15 “W“ FLEX REQUIREMENTS, min (FLTM BN 102-02) Crac
23、king through the finish coating is not acceptable. . Original 100,000 cycles . After aging 225.6 kJ/m2(SAE J 1885) 30,000 cycles . After aging 7 days at 100 +/- 2 C 30,000 cycles . After humidity ageing (acc. 3.18) 30,000 cycles 3.16 WEAR RESISTANCE REQUIREMENTS Testing according to paragraphs 3.16.
24、1 and 3.16.2 shall be determined by the appropriate Materials Engineering Activity. 3.16.1 Seat Belt Abrasion 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 +/-
25、 5 Shore A and abrade with No 8 cotton duck) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F26-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 6 3.16.2 Taber Abrasion No wear through the (SAE J1530A, Specimen Holder E140-15, finish to russet CS10 Wheels, 1000g loa
26、d, 4000 cycles. Wheels to be refaced every 2000cycles.) 3.16.3 Resistance to Scuffing 200 cycles (SAE J365, Specimen Holder E140-15) The materials color in the scuffed area shall be compatible with the adjacent unscuffed areas. No breaking of the finish is permitted. The resistance to scuffing of pr
27、oduction material shall be equal to or better than that exhibited by the master sample approved for production by the Materials Engineering Activity. 3.17 SHRINKAGE, max. 5.0% (FLTM BN 105-03, except Heat Cycle 100 +/-2 C, 3 cycles) 3.18 RESISTANCE TO HUMIDITY min (72HRS/38C/95% RH: GS 4 Samples to
28、be suspended vertically in No tone/gloss change the test cabinet) from master sample. Evaluation according to the AATCC Evaluation Procedure 2. 3.19 ADHESION OF SURFACE COATING max (FLTM BI 106-01 method B) As received 10% After 72hrs humidity 10% 3.20 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max
29、 80mm/minute 3.21 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 color and trim stra
30、tegy approval 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. 3.22 ADDITIONAL REQUIREMENTS FOR PERFORATED LEATHER All perforated leather shall meet the full leath
31、er specification before perforation. All perforated leather/parts to be skived, perforated and flesh sealed. Reduction in tear and tensile strength after perforation. 3.22.1 Breaking Strength To be agreed for each (ASTM D 2209) perforated quality ENGINEERING MATERIAL SPECIFICATIONWSS-M1F26-A Printed
32、 copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 6 3.22.2 Tear Strength To be agreed for each (ASTM D 5733) perforated quality 3.22.3 Resistance to Fiber Show Through None Visible Test Method: The test shall be conducted on a 305 mm x 305 mm area of original perforate
33、d 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). The material shall be judged a failure if there is fiber show through to the
34、surface. (method to be developed ) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 CLEANING AGENTS (See para 3.14.4) 1) All Purpose Cleaner E0AZ-19526-AA* or E8AZ-19623-AA* 2) Isopropyl Alcohol/Wat
35、er 50 % v/v 3) Land Rover approved cleaner Leather care kit BAC 500490 4) Soap /water 2% teepol L, 0.1 ETDA (Ethylene DiAmine Tetra acetic acid Di Sodium Salt) Distilled water. *or Ford Motor Company Recommended Equivalents 4.2 STIFFNESS (FLTM BN 157-02) 50+/- 20 proposal 4.3 AMINE STAINING, max Rating 4 - 5 (FLTM BN 112-10/AATCC Evaluation Procedure 1) Heat ageing: 24 hours at 100 +/- 2 C. 4.4 RESISTANCE TO SEAM WEAR No wear through the (FLTM BN 108-14, 5 minutes, 89N load) finish to russet Applicable to single and double sewn seams and piping
