1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 00 2017 07 17 Released A.Wagenhals, FNA Controlled document at www.MATS.com Copyright 2017, Ford Global Technologies, LLC Page 1 of 3 SPLIT GRAIN LEATHER, GENUINE, FINISHED, STEERING WSS-M1F21-D1 WHEEL, SHIFT KNOB AND BOOT 1. SCOPE The ma
2、terial defined by this specification is tanned split grain from steer or heifer hides. The finish coating shall be a series of pigmented or clear resins to ensure compliance to all requirements in this specification. 2. APPLICATION This specification was released originally for split grain leather f
3、or hand wrapped steering wheels, shift knobs, and shift/handbrake boots. 2.1 LIMITATIONS - This leather is not to be used for seating, interior trim, or instrument panel applications - Fully perforated leather is not to be used on steering wheels or shift knobs. 3. REQUIREMENTS 3.1 APPROVED SOURCES
4、This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally thro
5、ugh a Ford Materials Engineer. 3.2 APPEARANCE The color, grain, gloss and hand shall match the approved Corporate Design master sample. 3.3 SPLIT GRAIN The bottom layer of a leather that has been mechanically split into two layers. This bottom layer serves as the top/appearance surface. 3.4 LEATHER
6、PERFORMANCE Materials manufactured to this specification shall also meet the requirements contained in WSS-M98P12-C2/latest. Test plans for both construction and color approvals can be found on Table 1 within WSS- M98P12-C2/latest. ENGINEERING MATERIAL SPECIFICATIONWSS-M1F21-D1 Copyright 2017, Ford
7、Global Technologies, LLC Page 2 of 3 3.5 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning envi
8、ronment or soon after removal. 3.6 SAMPLE SELECTION LOCATIONS The location of the test samples is described in ISO 2418 or ASTM D2813 for physical testing of leather samples. Refer to WSS-M98P12-C2/latest for samples to be taken from the belly and backbone areas as noted in Table 1 of that specifica
9、tion. 3.7 FINISH The leather crust must be similar in color (minimum 80% color match) to the surface coating. This is to prevent undyed fibers from showing through after sewing . No correcting or repair of any kind shall be allowed including but not limited to buffing, filling, or stuccoing. Buffing
10、 is allowed for split leather only. 3.8 THICKNESS 1.1 1.4 mm (ASTM D1813) 3.9 BREAKING STRENGTH 1000 N min (ASTM D2208) 3.10 ELONGATION AT 100 N 4 - 14 % (ISO 3376, Cross and longitudinal directions Specimen size 50 X 100 +/- 2 mm, 50 mm/min test speed, 2 N preload) 3.11 TEAR STRENGTH 100 N min (AST
11、M D5733, any direction) 3.12 STIFFNESS Report Range (FLTM BN 157-02, measurements shall be taken along either side of the backbone.) Note: Reported range in the construction approval package must be maintained lot to lot throughout production. 3.13 SHRINKAGE 7% max (FLTM BN 105-03, except heat cycle
12、 at 100+/-2 C, 3 cycles, Report all measurements) 3.14 ADHESION OF SURFACE COATING (ISO 11644, Adhesive Henkel Sicomet 8400 or equivalent Supplier: Henkel, or equivalent Condition bonded test specimens for 1 hour min.) 3.14.1 As received 15 N/10 mm min 3.14.2 After Humidity 12 N/10 mm min (7 days at
13、 70 +/- 2 C and 95 +/-5% RH) ENGINEERING MATERIAL SPECIFICATIONWSS-M1F21-D1 Copyright 2017, Ford Global Technologies, LLC Page 3 of 3 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questi
14、ons concerning Engineering Material Specifications. 4.1 TYPICAL STIFFNESS RANGE 75 - 95 mm (FLTM BN 157-02, measurements taken along either side of the backbone.) 4.2 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, De
15、sign or Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested
16、 material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.3 SUPPLIERS ONGOING RESPONSIB
17、ILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier sha
18、ll notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications,
19、all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.4 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies t
20、o the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMARY OF REVISIONS
