1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2009 10 15 N-STATUS Replaced by global strategy B. Witkowski, NA 1991 10 01 EP00E01089489000 Revised 3.16 W. Scholz Conc. J. Schult 1991 07 01 EP00E01089486000 Released W. Scholz conc. J. Schult WP 3948-a Page
2、 1 of 6 SEALER, VINYL, BODY FILLER, GRINDABLE, HEAT CURING WSK-M4G332-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyvinylchloride (PVC) base, grindable body joint filler. 2. APPLICATION This material was originally released for visible and non-visible C
3、-pillar roof joints and is applied over phosphated or electrocoated body sheet metal. 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 appr
4、oval. Appropriate 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 su
5、pplied 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 designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when t
6、ested 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 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless other
7、wise specified. 3.4 COLOR White or as specified on Engineering Drawing ENGINEERING MATERIAL SPECIFICATION WSK-M4G332-A WP 3948-b Page 2 of 6 3.5 SOLIDS, min 98 % (FLTM BV 150-10 3.6 ASH, max 45 % (FLTM BV 150-10) 3.7 DENSITY 1.6 +/- 0.2 kg/L (ASTM D 1475) 3.8 VISCOSITY (FLTM BV 103-01, nozzle 2 mm,
8、343 kPa air pressure) 3.8.1 As received 45 - 65 s 3.8.2 After aging, max 120 s 3.9 SHORE HARDNESS “A“ 75 - 95 Apply enough material to a test panel 300 x 60 mm, prepared according to FLTM BI 120-01, and scrape to a dimension of 30 x 5 mm thickness. Condition for 10 minutes at room temperature and ex
9、pose in a mechanical convection oven at a temperature of 175 +/- 2 C for 30 minutes. Condition for four hours and check the shore hardness. 3.10 CURE CHARACTERISTICS There shall be no evidence of plasticizer exudation or tackiness of filler surface. It shall not crack or chip from substrate upon ben
10、ding as defined below. Test Method: . Prepare 100 x 300 mm body steel panels under production conditions. (3 phosphate coated panels and 3 phosphate and electrocoated panels.) . Apply 300 x 20 x 2 mm material ribbons to the panels. (Filler must be applied to electrocoated substrate within 1 hour aft
11、er baking.) . Condition for 10 minutes and bake as follows: Phosphated Panels: According to FLTM BV 150-05, Table 1, min and max during cycle. EC-Coated Panels: According to FLTM BV 150-05, Table 2, min and max curing cycle. . After cooling to 23 +/- 2 C bend specimens around a 50 mm mandrel to FLTM
12、 BV 153-03. ENGINEERING MATERIAL SPECIFICATION WSK-M4G332-A WP 3948-b Page 3 of 6 3.11 COLD ADHESION No chipping, cracking or adhesion failure Test Method: . Prepare 300 x 300 mm body steel panels under production conditions. (3 phosphate coated panels and 3 phosphate and electrocoated panels.) . Ap
13、ply 4 material ribbons of 2 x 30 x 270 mm to each panel at a distance of 50 mm from one edge (fixing end) and parallel to this edge. Distance between the ribbons 30 mm. (Filler must be applied to electrocoated substrate within one hour after baking.) . Condition for 10 minutes and bake as described
14、under paragraph 3.10. . Cool to 23 +/- 2 C and expose the test panels for 7 days at 70 +/- 2 C. . Fix the panels in the slamming apparatus as described in FLTM BV 151-01 and test as outlined under procedure clause 5 to 8 of that method with load “A“, except each panel shall be slammed a total of 10
15、times. Test temperature - 40 C. 3.12 FLOW RATE, max 2 mm (FLTM BV 153-01, Method A, except 90 deg angle) 3.13 FLEXIBILITY, min 5000 cycles (FLTM BV 115-01, Method C and D, X = 4 mm, except panel preparation and heat cycle per 3.10) 3.14 SHEAR ADHESION (FLTM BV 154-03, Method B) Test panel preparatio
16、n under production conditions (i.e., phosphate coated panels and phosphate and electrocoated panels). Apply filler to electrocoat substrate within one hour after baking. Coating thickness X = 2 mm; heat curing cycles according to FLTM BV 150-05 min and max. Curing cycle for phosphated panels, Table
17、1; for EC-coated panels, Table 2. 3.14.1 At 23 +/- 2 C, min 1.5 MPa 3.14.2 At 90 +/- 2 C, min 0.80 MPa ENGINEERING MATERIAL SPECIFICATION WSK-M4G332-A WP 3948-b Page 4 of 6 3.15 PEEL STRENGTH (FLTM BV 154-03, Method C) Test panel preparation under production conditions (i.e., phosphate coated panels
18、 and phosphate and electrocoated panels). Apply filler to electrocoat substrate within one hour after baking. Coating thickness X = 2 mm. Heat curing cycles according to FLTM BV 150-05, min and max. Curing cycle for phosphated panels, Table 1; for EC-coated panels, Table 2. 3.15.1 At 23 +/- 2 C, min
19、 30 N/cm 3.15.2 At 90 +/- 2 C, min 20 N/cm 3.15.3 At - 40 +/- 2 C, min 30 N/cm 3.16 STAINING There shall be no staining or other deleterious effects on vinyl roof material of each color as released for production. Test Method: . Cover test assemblies prepared according to 3.10 with approved vinyl ro
20、of material using adhesive WSK-M2G363-A; adhesive double coat, wet film thickness each approximately 0.2 mm, bonding - dry (vinyl material) on wet (test panel). . After conditioning 24 h at room temperature expose test assemblies with vinyl material facing the light source, for 200 h in the Fluoresc
21、ent Sunlamp Cabinet as described in FLTM BV 107-02. 3.17 VOLUME CONTRACTION OR EXPANSION The material shall not pull away (contract) from the side of the container, crack, nor show any evidence of overflow. Test Method: Fill a deep tin, 50 mm in diameter x 6 mm, or equivalent container with the mate
22、rial and level the surface flush with the top of the container. Place in a mechanically convected oven for 30 minutes at 175 +/- 2 C. 3.18 SANDING PROPERTIES The filler shall hand and machine water sand smoothly under production conditions without clogging the paper or peeling off filler, and the fi
23、nish shall result in a minimum of sand scratches. Test Method: Prepare test assemblies according to 3.10, except 300 x 30 x 3 mm filler ribbons. ENGINEERING MATERIAL SPECIFICATION WSK-M4G332-A WP 3948-b Page 5 of 6 3.19 ABRASIVES Shall contain no abrasive agents Test Method: Dilute a one gram sample
24、 of material with one gram special white spirits (150/200) and mix thoroughly. Rub a portion of the diluted material 100 times between two pieces of flat, clean plate glass. The appearance of scratches on the glass plates will be considered failure. 3.20 COMPATIBILITY WITH PRODUCTION PAINTS (FLTM BV
25、 153-08, Method “A“) The paint shall cover the sealer satisfactorily without evidence of discoloration or staining. 3.21 STAINING No staining or other deleterious (FLTM BU 152-02) effects on light colored production enamels Test Method: Condition one of the panels prepared in paragraph 3.20 for 24 h
26、ours at 23 +/- 2 C. Mask one half of the sealer ribbon and expose for 200 hours in the Fluorescent Sunlamp Cabinet. Examine the exposed and unexposed portions of the sealer. 3.22 WEATHER RESISTANCE No staining or other deleterious (FLTM BO 101-01, 500 h) Prepare test panels according to paragraph 3.
27、20. 3.23 STORAGE STABILITY 3 months (From date of receipt at Ford Motor Company) When stored in sealed unopened containers out of direct sunlight at ambient temperatures between 5 and 32 C. 3.24 QUALITY The material shall be smooth homogeneous mixture free from foreign materials and properties detri
28、mental to normal production use. 3.25 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. ENGINEERING MATERIAL SPECIFICATION WSK-M4G332-A WP 3948-b Page 6 of 6 Prior to making any
29、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 ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the a
30、ffected 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 submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the m
31、aterials addressed by this document. The restrictions are defined 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
32、 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. Upon request, the Supplier shall submit to the affected Materials En
33、gineering 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 results, not nominal values), the material designation and code number,
34、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 material will be added to the Engineering Material Approved Source List.
