1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2018 07 27 Revised See Summary of Revisions P.Konopka, NA 2006 02 08 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.17, 3.18, 4 1993 05 01 Released NB00E10204040000 D. DiGregorio E. Rezendes Copyright 2018, Ford Global Technologies, LL
2、C Page 1 of 5 TAPE, LOW DENSITY EPDM FOAM, PRESSURE SENSITIVE, WSB-M3G212-A SUPERSOFT 1. SCOPE The material defined by this specification is a supersoft, cellular, 100% EPDM component foam tape with one side adhesive coated and protected by a coated release paper. Note: This material can be supplied
3、 extruded into very complex cross sections, die cut or in roll form. 2. APPLICATION This specification was released originally for material used as a filler between exterior moldings and painted metal to seal against air leaks, water leaks, and wind noise. It is used in areas where low force to comp
4、ress is required and may also be used to seal areas where the design requires complex extrusions. 3. REQUIREMENTS 3.1 APPROVED SOURCES 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 li
5、sted 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 Engineer. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a co
6、ntrolled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.4 DIMENSIONS Cross sections/dimensions as specified on the Engineering drawing. 3.5 DENSITY (ASTM D 3574, Test A) The density tolerance fo
7、r any given supplier shall be +/- 23 kg/m3 based on the recorded density of the original approved production sample. See para 5.2. 3.6 TENSILE STRENGTH 350 kPa min (ASTM D 412, Die C) 3.6.1 Elongation 150% min 3.7 COMPRESSION DEFLECTION 3.45 - 13.79 kPa (ASTM D 1056, Test B1) ENGINEERING MATERIAL SP
8、ECIFICATION WSB-M3G212-A Copyright 2018, Ford Global Technologies, LLC Page 2 of 5 3.8 COMPRESSION SET 50% max (ASTM D 1056, Test B1) 3.9 WATER SEAL No leak after 60 minutes Test Method: Wipe two glass plates with mineral spirits using a clean cotton cloth. Shape a 12 x 6 x 300 mm sample into a “U“
9、configuration between the surfaces of the glass plates. The plates should be spaced and clamped so that the material between them is compressed 30% of the original thickness for 3.9.1 and 50% of the original thickness for 3.9.2. After the assemblies have been processed as specified below, pour water
10、 into the “U“ so that the deepest point measures 100 mm. Examine the assembly after 60 minutes. 3.9.1 Condition the assembly for 30 minutes at 23 +/- 2 C. 3.9.2 Expose the assembly for 30 minutes at 121 +/- 2 C, then cool to 23 +/- 2 C prior to test. 3.10 LOW TEMPERATURE FLEXIBILITY No cracking Test
11、 Method: Condition a minimum of three 150 mm samples of tape as received at -40 +/- 1 C for 4 h and bend the samples 180 deg around a temperature conditioned 6.4 mm diameter mandrel. 3.11 PAINT STAINING No migration staining Test Method: Securely attach a 50 x 100 mm sample of the material to a 100
12、x 150 mm steel panel coated with currently released body enamels with top surface of foam against the paint. Expose the assembly for 500 h in a Q.U.V. cabinet described in SAE J2020. Examine for any evidence of staining beyond the boundaries of the test specimen. 3.12 PRESSURE SENSITIVE ADHESION (AS
13、TM D 1000) 3.12.1 Adhesion to Stainless Steel 500 N/m width min (SAE J1434) If foam fails internally before peeling occurs, the maximum values at the point of internal failure must be at least as great as 440 N/m width minimum. 3.12.2 Adhesion to Painted Metal 500 N/m width min (Substrates per para
14、5.3) If foam fails internally before peeling occurs, the maximum values at the point of internal failure must be at least as great as 440 N/m width minimum. 3.12.3 Adhesion to Stainless Steel (SAE J1434) Heat Resistance No adhesion failure Environmental Cycling Resistance No adhesion failure Test Me
15、thod: Apply 200 - 250 mm strips of tape as received to 2 stainless steel panels, adhesive to metal, and roll each strip once in each direction with a 2 kg roller. Remove release paper and air dry 24 h at 23 +/- 2 C. ENGINEERING MATERIAL SPECIFICATION WSB-M3G212-A Copyright 2018, Ford Global Technolo
16、gies, LLC Page 3 of 5 For heat resistance test, place 1 panel in an inverted position in an air mechanical convection oven for 30 minutes at 120 +/- 2 C. For environmental cycling resistance test, subject other panel to 5 consecutive cycles of the following conditions: o 16 h at 38 +/- 1 C and 95 -
17、100% R.H. o 4 h at -30 +/- 1 C o 4 h at 90 +/- 2 C 3.13 OZONE Passes with no (BP 101-01, Test A) cracking or degradation 3.14 FOGGING (PHOTOMETRIC) Fog Number 70 min (SAE J1756, 3 h at 100 C heating, 21 C Cooling plate, post testing conditioning 16 h) Formation of clear film, droplets or crystals is
18、 cause for rejection For shipping, all materials or parts shall be sampled immediately after manufacture, then bagged in a zipper- or slide-sealed polyethylene (PE) bag, PE-coated aluminum bag or wrapped in aluminum foil prior to bagging. Test specimens shall be cut, then stored in a clean, open env
19、ironment for 14-28 days. After 14-28 days of air exposure, the specimens shall be tested immediately or re-bagged until testing can be performed. Bagged materials or parts must be labelled on the outside of the bag with the following information, and included in the test report: supplier, contact in
20、formation, product code/trade name or part number, manufacturing location, date of manufacture, shipping date, start and end dates of conditioning period and test date. 3.15 HEAT SHRINK RESISTANCE 10% in all directions max Test Method: Cut a minimum of three strips of material 6.25 x 25 x 300 mm. Me
21、asure thickness in an average area of each strip with a dial micrometer. Mark the area measured and record results. Measure width and length with a steel rule along average sections of each strip. Mark the width and length sections measured and record the results. Place the test samples into an air
22、circulating oven for 7 days at 121 C. Remove the test samples from the oven and cool 24 h at room temperature. Re-measure the thickness, width and length at the previously marked determinations and calculate the percent shrinkage in both the length and width direction. 3.16 LINER RELEASE 2 - 11 N/m
23、width Test Method: Use ASTM D 1000, except apply the unlined adhesive side of the tape to a clean metal panel and measure the force required to peel the liner from the tape. 3.17 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall be subjected to a production trial
24、. Functional trial results must be approved by the affected assembly operation and Design ENGINEERING MATERIAL SPECIFICATION WSB-M3G212-A Copyright 2018, Ford Global Technologies, LLC Page 4 of 5 Engineering. Results shall be made available to Materials Engineering prior to material approval and rel
25、ease. 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 Material Specifications. 4.1 COLOR Black or as specified on Engineering Drawing 4.2 DENSITY - ORIGINA
26、LLY APPROVED PRODUCTION 145 +/- 15 kg/m3 MATERIAL 4.3 PAINT SUBSTRATES ESB-M33J3-B2/B3 - Basecoat/clearcoat system or equivalent. 4.4 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and
27、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 material samples must be availab
28、le 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. 4.5 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equiv
29、alent 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 T
30、echnical 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 specifi
31、cations for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.6 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this
32、 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 2018 07 27 -Updated fogging requirement ENGINEERING MATERIAL SPECIFICATION WSB-M3G212-A Copyright 2018, Ford Global Technologies, LLC Page 5 of 5 -Updated general notes
