1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 00 2017 07 17 Released A.Wagenhals, NAControlled document at www.MATS.com Copyright 2017, Ford Global Technologies, LLC Page 1 of 3 TOP GRAIN LEATHER, GENUINE, FINISHED, STEERING WSS-M1F22-D1 WHEEL, SHIFT KNOB 1. SCOPE The material define
2、d by this specification is tanned top grain from steer or heifer hides. The finish coating shall be a series of pigmented or clear resins to ensure compliance to all requirements of these specifications. 2. APPLICATION This specification was released originally for top grain leather for hand wrapped
3、 steering wheels, shift knobs, and shift 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 This specification requir
4、es 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 through a Ford Materials Engi
5、neer. 3.2 APPEARANCE The color, grain, gloss and hand shall match the approved Corporate Design master sample. 3.3 TOP GRAIN Leather that is full grain with no alteration to the surface. The top coat is applied to enhance durability of the material. 3.4 LEATHER PERFORMANCE Materials manufactured to
6、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-M1F22-D1 Copyright 2017, Ford Global Technologies, LLC Page 2 of 3 3.
7、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 environment or soon after removal. 3.6 SAMP
8、LE 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 specification. 3.7 FINISH The leather crust must
9、 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 is allowed for split leather only. 3.8
10、 THICKNESS 1.1 1.4 mm (ASTM D1813) 3.9 BREAKING STRENGTH 850 N min (ASTM D2208) 3.10 ELONGATION AT 100 N 6 - 16 % (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 (Trapezoid) 150 N min (ASTM D5733, any direction) 3.12
11、 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 5% max (FLTM BN 105-03, except heat cycle at 100+/-2 C, 3 cycles, Rep
12、ort all measurements) 3.14 ADHESION OF SURFACE COATING (ISO 11644, Adhesive Sicomet 8400 or equivalent Supplier: Henkel, or equivalent Condition bonded test specimens for 1 hour min.) 3.14.1. As received 12 N/10 mm min 3.14.2 After Humidity 12 N/10 mm min (7 days at 70 +/- 2 C and 95 +/-5% RH) ENGIN
13、EERING MATERIAL SPECIFICATIONWSS-M1F22-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 questions concerning Engineering Materia
14、l Specifications. 4.1 TYPICAL STIFFNESS RANGE 70 - 90 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, Design or Product Development, and M
15、aterials 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 material samples must be availabl
16、e 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 RESPONSIBILITY All materials must be equiva
17、lent 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 shall notify the affected Supplier Te
18、chnical 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, all samples tested to the specific
19、ations 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 to 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
