1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Released 2009 10 14 N-STATUS Replaced by global strategy B. Witkowski, NA 1994 12 06 Revised and Retyped 1987 09 11 SM/EQ 6010 TP Released WP 3948-a Page 1 of 6 SEALER, BUTYL RUBBER, PROFILED, SPOT ESK-M4G292-A W
2、ELDABLE, HEAT CURING SEALER, BUTYL RUBBER, PROFILED, SPOT ESK-M4G292-A2 WELDABLE, HEAT CURING NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specification are solvent free sealers based on butyl rubber. They are die cut from extruded, laminated sheeting, heat curing, and heat
3、meltable. They have pressure sensitive adhesive on one side covered by release paper or foil. The other side is covered by a very thin PE support film for handling. After curing this film does not interfere with the adhesion of the butyl sealer to the metal surface. ESK-M4G292-A is spot weldable ESK
4、-M4G292-A2 is not weldable 2. APPLICATION The specification ESK-M4G292-A was released originally for materials for sealing the front fender at cross member upper and is applied to oiled surfaces in body assembly, and ESK-M4G292-A2 was originally released for sealing gaps at liftgate hinges. 3. REQUI
5、REMENTS 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. Appropriate statistical tools must be used to analyze process/product data so that varia
6、tion 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 specification. The IR spectra and thermograms established for initial approval
7、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 same conditions. ENGINEERING MATERIAL SPECIFICATION ESK-M4G292-A/A2 WP 3948-b
8、Page 2 of 6 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. 3.4 D
9、IMENSIONS As specified on Engineering drawing 3.5 COLOR Black 3.6 SOLIDS, min 99.0 % (FLTM BV 150-10) 3.7 ASH, max (FLTM BV 150 -10) ESK-M4G292-A 30 % ESK-M4G292-A2 36 % 3.8 THICKNESS 0.6 +/- 0.1 mm or as specified on (ISO 4593) Engineering Drawing 3.9 DENSITY at 20 C 1.3 +/- 0.5 g/cm3 (ISO R 1183,
10、Method A) 3.10 PENETRATION at 20 C (ASTM D 5, needle 2.5 g, 1.5 N total weight force, 5 s dwell time) If the finished part does not allow the preparation of specimens, the supplier is required to provide, together with the Initial Sample Report, specimens of same material and equivalent manufacture
11、used for the finished part. Samples for control and routine checks shall be submitted as required by Quality Control. 3.10.1 Original (in 0.1 mm) ESK-M4G292-A: 5 - 8 mm 3.10.2 After Ageing (in 0.1 mm) ESK-M4G292-A2: 5 - 8 mm (14 d at 35 +/- 2 C) 3.11 COLD RESISTANCE AFTER AGEING No loss of adhesion
12、or chipping Test Method: 1)Apply 250 x 40 x 0.6 +/- 0.1 mm pieces of test material in the middle to 300 x 100 x 0.8 - 0.9 mm test panels, prepared according to FLTM BZ 150-11, “Normal Grade“ and press down lightly. ENGINEERING MATERIAL SPECIFICATION ESK-M4G292-A/A2 WP 3948-b Page 3 of 6 2)Expose sep
13、arate test assemblies according to FLTM BV 150-05, table 2: a) min curing cycle b) max curing cycle 3)Expose test assemblies in a mechanically convected air dry oven at 80 +/- 2 C for two weeks. 4)After cooling to 23 +/- 2 C expose test assemblies and bending fixture (see FLTM BV 153-4, except 100 m
14、m mandrel) in a cold box at - 30 +/- 1 C for 4 hours. 5)While still in the cold box bend test assemblies within 2 seconds around the 100 mm mandrel through an angle of 90 degrees. 3.12 HEAT RESISTANCE AFTER AGEING No loss of adhesion or chipping. Test Method: 1)Specimen preparation according to 3.11
15、, test method, section 1-3. 2)Proceed as outlined under FLTM BV 153-2, Method C, clause 6, mandrel diameter 100 mm. 3.13 FLOW RATE Test Method: 1)Preparation of test assemblies according to 3.11, test method, section 1, except test material to 250 x 20 x 0.6 +/- 0.1 mm. 2)After 10 minutes at 23 +/-
16、2 C expose test assemblies at an angle of 45 degrees to the horizontal in a mechanically convected air dry oven maintained at 120 +/- 2 C for 30 minutes and with the longitudinal axis of the strip in the horizontal (see FLTM BV 153-11, fig. 1). 3.14 FLAMMABILITY AND CORROSION (Only ESK-M4292-A) (FLT
17、M BV 129-2, Method A, except use sealing strip of 600 x 20 x 0.6 +/- -0.1 mm. Immediately after welding separate the welded parts using a test fixture according to FLTM BV 159-01, fig. 4. Examine after 48 h at 23 +/- 2 C) No burning, no corrosion. ENGINEERING MATERIAL SPECIFICATION ESK-M4G292-A/A2 W
18、P 3948-b Page 4 of 6 3.15 CORROSION RESISTANCE The material shall protect the test panel from corrosion. No corrosion or blistering at the borderline sealer/EC/steel. Test Method: 1a)For ESK-M4G292-A: Test panel preparation according to FLTM BV 159-02, Method A, except use sealing strip of 600 x 20
19、x 0.6 +/- 0.1 mm, weld spot distance of 40 mm. 1b)For ESK-M4G292-A2: except without welding. Specimens to be changed while following preparation. 2)After 2 hours at 23 +/- 2 C wash, phosphate and electrocoat test assemblies under normal production conditions. 3)Expose separate test assemblies accord
20、ing to FLTM BV 150-05, table 1, phase 2 and 3: a) min curing cycle b) max curing cycle 4)After 24 hours at 23 +/- 2 C expose test assemblies to a salt spray fog according to ASTM B 117 for 480 hours. 5)Separate welded assemblies using a test fixture according to FLTM BV 159-01, fig. 4 and examine. 3
21、.16WASH AND PHOSPHATING SOLUTION RESISTANCE No evidence of dissolution or lifting from panel. Test Method: 1)Specimens preparation according to 3.15, test method, section 1. 2)After 2 hours at 23 +/- 2 C wash and phosphate test assemblies under normal production conditions. 3.17 SHEAR STRENGTH 3.17.
22、1 At 23 +/- 2 C, min 15.0 N/cm2 3.17.2 At 90 +/- 2 C, min 3.5 N/cm2 3.17.3 At - 30 +/- 1 C, min 150.0 N/cm2 Test Method: FLTM BV 154-03, Method B. Preparation of test specimens according to Section A except use sealing strip of 0.6 +/- 0.1 mm thickness. Minimum and maximum heat curing cycle accordin
23、g to FLTM BV 150-05, table 1. Adhesion failure permitted. ENGINEERING MATERIAL SPECIFICATION ESK-M4G292-A/A2 WP 3948-b Page 5 of 6 3.18 PEEL STRENGTH 3.18.1 At 23 +/- 2 C, min 18.0 N/cm 3.18.2 At 90 +/- 2 C, min 8.0 N/cm 3.18.3 At - 30 +/- 1 C, min 70.0 N/cm Test Method: FLTM BV 154-03, Method C. Pr
24、eparation of test specimens according to section A, except use sealing strip of 0.6 +/- 0.1 mm thickness. Minimum and maximum heat curing cycle according to FLTM BV 150-05, table 1. Adhesion failure permitted. 3.19 WETTING The enamel shall form a continuous film over the visible edges of sealing str
25、ip. Discoloration or staining permitted. Test Method: Specimens preparation according to 3.15, test method, section 1 and 2, except test panels 350 x 50 x 0.8 - 0.9 mm and sealer strip of 340 mm. Proceed as outlined under FLTM BV 153-08, Method A, section 2-7, except without wet on wet. 3.20 QUALITY
26、 The material shall be of uniform quality, free from foreign materials and properties detrimental to normal production use. 3.21 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted.
27、 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 ability to meet the specification requirements, the Supplier shall notify Purchasing,
28、 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 submitted with the request. Substance restrictions imposed by law, regulations or
29、 Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Materials Specification WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION ESK-M4G292-A/A2 WP 3948-b Page 6 of 6 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior app
30、roval 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 Engineering
31、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, and test s
32、pecimens 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. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 STORAGE STABILITY (From date of receipt at FMC) Minimum 6 months when stored between 5 C and 28 C.
