1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver. 2 2008 08 08 N-STATUS Replaced by WSK-M4D827-A C. Boese, FNA 1990 09 04 Released SMP54216 R. Balodis Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 5 ABS, SELF EXTINGUISHING MOLDING COMPOUND, WSZ-
2、M4D781-A INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a self-extinguishing molding compound based on acrylonitrile-butadiene-styrene. 2. APPLICATION This specification was released originally for material used for visible interior parts, such as ash-t
3、ray components, where self-extinguishing characteristics are required. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropria
4、te statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this
5、specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the
6、 same conditions. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 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.
7、 3.4 MOULDING COMPOUND 3.4.1 Melt Flow Rate tbd g/10 minutes (ISO 1133/ASTM D 1238, 220 C, 10 kg) The material shall be dried for min of 2 h at 80 - 85 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATION WSZ-M4D781-A Printed copies are uncontrolled Co
8、pyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection moulded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (T
9、ensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the centre portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.10 - 1.20 g/cm3 (ISO 1183, Method A/ASTM D 792, Metho
10、d A1) 3.5.3 Tensile Strength at Max Load, min 44 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.4 Flexural Modulus, min 2.3 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at
11、 23 C tbd MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15 %, strain level below 1 %. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the centre of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additiona
12、lly, a Shear Modulus vs. Temperature curve shall be plotted for - 50 to + 160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 7. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen,
13、10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 10 kJ/m2 3.5.6.2 At - 40 +/- 2 C tbd kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be cond
14、ucted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATION WSZ-M4D781-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 90 C 3.5.8 Vicat
15、 Softening Temperature, min 100 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. At 49.0 N load) All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel.
16、3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 80 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change, max + 25 % (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change
17、, max - 25 % (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-extinguishing The specimen size required for material approval is 355 x 100 x tbd +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Nu
18、mber, min tbd Fomration of excessive amounts of clear film or droplets is cause for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.8.2 or 3.8.3 the material shall show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating C
19、hange in Color, 10 step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume). ENGINEERING MATERIAL SPECIFICATION
20、 WSZ-M4D781-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 300 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 FOA APPLICATIONS ONL
21、Y Rating 4 12 months Townsville (20 deg north, under glass, specimen size: 150 X 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.3 EAO & NAAO/DPO APPLICATIONS Rating 4 12 months Florida (FLTM BI 160-01, 5 deg south, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick
22、, molded in smooth polished mold) 3.8 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance specifications. All critical areas with respect to these properties shall be cl
23、early designated on the Engineering drawing. 3.9 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color,
24、 processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed chan
25、ges and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are d
26、efined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering ac
27、tivity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity its own laboratory report to the specifi
28、cation (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List. ENGINEERING MATERIAL SPECIFICATION WSZ-M4D781-A Printed copies are uncontrolled Cop
29、yright 2008, Ford Global Technologies, LLC Page 5 of 5 5. GENERAL INFORMATION The information given below is provided for assistance and clarification and does not represent requirement(s) to this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8.5E-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.7 % 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C tbd . After 30 min at 120 C tbd Shear Modulus vs. Temperature Plot - tbd
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