1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Rev 01 2012 10 16 N Status Replaced by WSS-M1F25-B J. Williams, FoE 2003 04 29 Activated M. Garcia-Santamaria, L. Soreide Controlled document at www.MATS Page 1 of 5 Copyright 2012, Ford Global Technologies,
2、 Inc. LEATHER, GENUINE TOP GRAIN, INSTRUMENT PANEL WSS-M1F25-A AND INTERIOR TRIM NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is finished, full grain, selection “A“, steer hides which have been tanned to retain the natural odor of the leather. 2. APPLICATION This
3、 specification was released originally for material used as instrument panel leather for the Thunderbird or Lincoln LS. This material must meet the requirements of WSS-M15P45-A and the appropriate Instrument Panel SDS or WSS-M15P4-E and the appropriate Interior Trim SDS. If this material will be par
4、t of an integrated airbag/instrument panel system then the material must also meet the requirement of the appropriate airbag SDS. 3. REQUIREMENTS For all test methods, no individual specimen shall fall below the minimum values specified herein. Material specification requirements are to be used for
5、initial qualification of materials. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS 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 f
6、rom edge of the hide. 3.3 APPEARANCE (FLTM BI 109-01) The color, grain, visual aesthetics, hand and finish shall match the approved Design Center master sample, or shall be as specified on the engineering drawing. 3.4 GRADE Full top grain dyed leather, not buffed. The leather must be through dyed to
7、 a sufficient depth to prevent undyed fibers from showing through after sewing. Also, the color of the dye must be compatible in appearance with the surface coating. ENGINEERING MATERIAL SPECIFICATION WSS-M1F25-A Page 2 of 5 Copyright 2012, Ford Global Technologies, Inc. 3.5 FINISH All hides shall s
8、how no defects or surface blemishes affecting the appearance of the material, such as brush marks or stops and bad flows. 3.6 THICKNESS, mm, range As specified on the (ASTM D 1813) engineering document 3.7 BREAKING STRENGTH, min (ASTM D 2208) Any direction 400 N 3.8 ELONGATION at 400 N, max 60% (AST
9、M D 2208) 3.9 TEAR STRENGTH (Trapezoid), min (ASTM D 5733, average the total load of the 5 highest peaks. Average 5 samples.) Any direction 44 N 3.10 SOFTNESS, All Grains, min average 3.7 mm (FLTM BN 157-01, BLC ST300 Softness Tester, using a 25 mm diameter (nominal) aperture) Production material sh
10、all be similar in hand, when mutually judged by the material supplier and the product manufacturer, as material originally approved by the Materials Engineering Activity. The measurements should be taken with the finished side up. Initial approval requires measurements from ten hides taken in the fi
11、ve locations indicated in FLTM BN 157-01. The average of the five points on each hide must be 3.7, min. 3.11 LEATHER ADHESION TEST 4 N/mm2 (ISO 11644) 3.12 COLOR PROPERTIES 3.12.1 Resistance to Fade (SAE J 1885, ISO 105-A02/ AATCC Evaluation Procedure 1) Below the belt line 488.8 kJ/m2 Rating 4 ENGI
12、NEERING MATERIAL SPECIFICATION WSS-M1F25-A Page 3 of 5 Copyright 2012, Ford Global Technologies, Inc. Above the belt line 1504 kJ/m2 Rating 3 In addition, the material must remain flexible and exhibit no cracking when bent around an approximately 6.4 mm mandrel. 3.12.2 Resistance to Heat Aging, min
13、Rating 3 ISO 105-A02/ AATCC Evaluation Procedure 1) Instrument Panel 500 hours at 120 +/- 2 C Interior Trim 168 hours at 100 +/- 2 C The heat aged sample shall not exhibit color tone change in excess of the above rating. 3.12.3 Soiling and Cleanability, min (FLTM BN 112-08, ISO 105-A02/ AATCC Evalua
14、tion Procedure 1) After Cleaning, min Rating 3 Cleaned with Leather cleaner not multipurpose 3.12.4 Resistance to Cleaning Agents, Rating 4 max discoloration (FLTM BN 107-01, 10 cycles) Test Procedure: Substitute the leather for the textile material. Saturate white cotton cloth with the cleaners lis
15、ted. 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 (5 cycles, Rating 3) 4) Deluxe Vinyl and Leather Cleaner F2AZ-19521-WA 3.12.5 Crocking Test Wet/Dry Rating 4 (FLTM BN 1
16、07-01) Evaluation according to the AATCC Evaluation Procedure 2. ENGINEERING MATERIAL SPECIFICATION WSS-M1F25-A Page 4 of 5 Copyright 2012, Ford Global Technologies, Inc. 3.12.6 Resistance to Migration Staining (FLTM BN 103-01) After test, the specimens and the accessory test materials must not show
17、 any surface deterioration, change in color 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 place
18、d face to face with itself and the standard vinyl test material. 3.13 FOGGING 3.13.1 Method A: Photometric Procedure (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 70 If oily droplets, crystals or clear film are present and the fog number is greate
19、r than 70, sample must be retested per para 3.15.2. 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) Weight of Condensate, max 2 mg 3.14 ODOR, max Rating 2 (FLTM BO
20、131-01) 3.15 SHRINKAGE, max. 5.0% (FLTM BN 105-03, except Heat Cycle 120 +/-2 C, 3 cycles) 3.16 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute ENGINEERING MATERIAL SPECIFICATION WSS-M1F25-A Page 5 of 5 Copyright 2012, Ford Global Technologies, Inc. 4. GENERAL INFORMATION The informati
21、on given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 CLEANING AGENTS (See para 3.12.4) 1) Window cleaner with ammonia E4AZ-19C507-AA* 2) All Purpose Cleaner E0AZ-19526-AA* or E8AZ-19623-AA* 3) Isopropyl Alcohol/Water 50% v/v 4) Deluxe Vinyl and Leather Cleaner F2AZ-19521-WA* *or Ford Motor Company Recommended Equivalents 4.2 RESISTANCE TO DYNAMIC EXUDATION Rating 4 - 5 (70 C and 70% RH for 168 hours, ISO 105-A02/ AATCC Evaluation Procedure1). For initial technology approval only.
