1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Released 2010 05 12 N-STATUS Replaced by WSS-M15P26-D G. Eaton, NA 1995 01 04 NB00I10043054412 Released D. Ruona K. Minnich WP 3948-a Page 1 of 6 PERFORMANCE, ARMREST WSB-M15P26-C NOT TO BE USED FOR NEW DESIGN 1.
2、 SCOPE This specification defines the performance requirements for a formed armrest assembly. 2. APPLICATION This specification was released originally for automotive armrests for passenger cars and light trucks. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of F
3、ord Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMET
4、RY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the design
5、ated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/-
6、 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.4 APPEARANCE (FLTM BI 109-01) The color, pattern, and finish shall match the approved Design Center master sample, or shall be as specified on the engineer
7、ing drawing. ENGINEERING MATERIAL SPECIFICATION WSB-M15P26-C WP 3948-b Page 2 of 6 3.5 CONSTRUCTION Cover - As specified on the engineering drawing Foam - As specified on the engineering drawing Substrate - As specified on the engineering drawing 3.6 ENVIRONMENTAL TESTING 3.6.1 Short Term Heat and C
8、old Cycle 5 h at 88 +/- 2 C 30 minutes at 23 C and 50 % R. H. 5 h at - 40 +/- 2 C 30 minutes at 23 C and 50 % R. H. 5 h at 88 +/- 2 C 30 minutes at 23 C and 50 % R. H. 3.6.2 Heat, Humidity and Cold Cycle 24 h at 50 +/- 2 C and 95 +/- 5 % R. H. 6 h at - 35 +/- 2 C 12 h at 86 +/- 2 C 6 h at - 35 +/- 2
9、 C 24 h at 50 +/- 2 C and 95 +/- 5 % R. H. 3.6.3 Long Term Heat Exposure (7 days at 82 +/- 2 C) Requirements: The trimmed assemblies shall remain relatively unaffected by the exposure cycles during and after the tests as demonstrated. Tactually/visually: The assembly shall not become tacky, lose sur
10、face-grain definition, or exhibit surface-color change; no wrinkling, distortion, blistering, delamination, blushing, hazing, milking, staining, or other objectionable visual appearance. Functionally: No expansion, shrinking, or warping that will interfere with normal functional operations. 3.7 FATI
11、GUE TEST (FLTM BO 113-04) 3.7.1 Original 3.7.2 After exposure per para 3.6.1 3.7.3 After exposure per para 3.6.2 ENGINEERING MATERIAL SPECIFICATION WSB-M15P26-C WP 3948-b Page 3 of 6 3.7.4 After exposure per para 3.6.3 The cover material shall not delaminate from the foam and there shall be no evide
12、nce of foam crumbling. There shall be no permanent deformation greater than 2 mm. Results of this test shall be determined by cutting a cross section of the armrest after fatigue flexing. 3.8 LOAD DEFLECTION (FLTM BO 113-03, Steps 1-6) The load values and test location and depth of deflection shall
13、be as specified on the engineering drawing. Load Loss at 0 +/- 1 C, max 55 % Load Loss at 23 +/- 2 C, max 40 % Aged Load Deflection, Change - 5 to + 35 % Test Method: Measure the load deflection of the armrest sample after aging for 22 h in a mechanical convection oven maintained at 100 +/- 2 C. Con
14、dition sample at room temperature for 4 h prior to test. 3.9 COLD IMPACT The assembly shall show no (Rubber Ball: 4.5 kg weight evidence of cracking or 127 mm diameter, 60 +/- 5 breaking and shall fully shore “A“ durometer) recover from indentation in the time required for the assembly to return to
15、23 +/- 2 C. Test Method: Conduct this test with the trim assembly mounted on an actual or simulated production support foundation using the approved retention methods. Expose the mounted assembly for 24 h at 82 +/- 2 C and then for 5 h at - 30 +/- 2 C. Inside the coldbox or if removed from the cold
16、box within ten seconds, drop the rubber ball from a height of 610 mm once on the upper area, once on the lower area, and once on any bondline area, and once on all moldings; or drop the rubber ball as specified on the engineering drawing. 3.10 PLY ADHESION, Avg. 88 N/m (ASTM D 413, Machine Method, T
17、ype A, 180 deg peel, 25 mm/minute crosshead speed) 3.10.1 Original 3.10.2 After exposure per para. 3.6.1 3.10.3 After exposure per para. 3.6.2 3.10.4 After exposure per para. 3.6.3 Ply adhesion test specimens to be selected from functional surface of part or as specified on engineering drawing. ENGI
18、NEERING MATERIAL SPECIFICATION WSB-M15P26-C WP 3948-b Page 4 of 6 The cover stock must be bonded to the foam at all points with no blisters permissible. When the cover is peeled from the foam, the adhesion shall produce tearing of the foam leaving foam particles adhering to the vinyl skin, across th
19、e covers total surface. The latter adhesion requirement, “tearing of the foam leaving foam particles adhering to the vinyl skin“, is not applicable where the tear strength of the foam in the part consistently exceeds 175 N/m. 3.11 AGED “W“ FLEX (FLTM BN 102-02) No cracking, crazing or other deterior
20、ation to a greater extent than the approved sample on file in the Textile Engineering Section, Body Materials Engineering Department (based on suppliers test data and test specimens as reviewed by the Materials Engineering Activity). Test Method: Cut two assembly samples 65 x 81 mm with a 6.4 mm of
21、foam. Age one assembly for 225.6 kJ/m2 Xenon and the other for 7 days at 100 +/- 2 C in a mechanical convection oven. After aging, flex for 10,000 cycles as described in FLTM BN 102-02. 3.12 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute 3.13 RESISTANCE TO ABRASION - PAINTED PARTS ONL
22、Y 250 cycles (FLTM BN 108-02, 1000 g load, CS-10 wheels) The abraded area must exhibit compatible color and appearance with the adjacent unabraded area. The abrasion resistance of production material shall be equal to or better than the sample approved by the Materials Engineering Activity. 3.14 RES
23、ISTANCE TO SCUFFING - PAINTED PARTS ONLY 250 cycles (SAE J365) No evidence of lifting, peeling or excessive scuffing 3.15 RESISTANCE TO CROCKING, min (AATCC Test Method Number 8, AATCC Evaluation Procedure 2) Dry Rating 4 Distilled Water Rating 4 50/50 Blend Isopropyl Alcohol/Distilled Water Rating
24、4 Instruments used to determine Delta E color difference for this procedure require capability for providing CIELAB color values using illuminant D-65, 10 degrees observer data. If an instrument with diffuse geometry is used, the specular component of reflectance shall be included in the measurement
25、. (Refer to SAE J1545, paragraph 3.6 for details.) ENGINEERING MATERIAL SPECIFICATION WSB-M15P26-C WP 3948-b Page 5 of 6 3.16 FOGGING (FLTM BO 116-03) Fog Number, min 60 Formation of a clear film, droplets or crystals is cause for rejection. 3.17 SOILING AND CLEANABILITY (FLTM BN 112-08) Cleanabilit
26、y, min Rating 3 3.18 RESISTANCE TO FADE (SAE J1885, assembly tested as a composite, AATCC Evaluation Procedure 1) 488.8 kJ/m2 xenon arc, min Rating 4 601.6 kJ/m2 xenon arc, min Rating 3 3.19 TESTING TO FAILURE Suppliers must submit a mutually agreed upon testing to failure workplan for a material so
27、urce approval. The workplan is to state the number of samples to be tested, the environmental conditions for testing and dates for periodic review of the test data with Materials Engineering. 3.20 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specified
28、 on the Engineering drawing, Engineering parts specification and/or performance specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing. 3.21 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in
29、all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials abilit
30、y to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be su
31、bmitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Materials Specification WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION WSB-M15P26-C WP 3948-b Page 6 of 6 4. APPRO
32、VAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Up
33、on request, the Supplier shall submit to the affected Materials Engineering activity 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 this specification (test result
34、s, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or applications. Upon approval, the
35、 material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 BILL OF MATERIALS Supplier must submit a bill of materials with test data to Materials Engineering for approval. Any changes in construction or material must be validated and resubmitted to Materials Engineering.
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