1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 04 12 N Status No usage or replacement N. Benipal, NA 2005 02 14 Revised Inserted 3.0; Deleted 3.6 & 4 1984 11 29 Released C301-PF525361-R Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 5 R
2、UST PREVENTIVE COMPOUND - SPRAY OR BRUSH TYPE ESB-M7C68-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an air dry, wax-based rust preventive compound with excellent resistance to corrosion by road contaminants such as salt treated snow and ice, dirt, mud and g
3、rit. 2. APPLICATION This specification was released originally to afford corrosion protection to the inside surfaces of bumpers made of chrome plated steel or bare, chrome plated and anodized aluminum materials. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers an
4、d part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 COMPOSITION (FLTM BI 102-01) 3.1.1 Non-volatile, min 39% 3.1.2 Exempt Solvent The volatile portion shall not be photochemically reactive as defined below: A photochemically reactive sol
5、vent is any solvent with an aggregate of more than 20% of its total volume composed of the chemical compounds classified below or which exceeds any of the following individual percentage composition limitations, referred to the total volume of solvent: A combination of hydrocarbons, alcohols, aldehy
6、des, esters or keytones having an olefinic or cycloolefinic type of unsaturation - 5%. A combination of aromatic compounds with eight or more carbon atoms to the molecule except ethylbenzene - 8%. A combination of ethylbenzene, ketones having branched hydrocarbon structures, trichloroethylene or tol
7、uene - 20%. 3.1.3 Specific Composition 3.1.3.1 Volatile Portion Suppliers shall furnish certification of conformance to para 3.1.2 of this specification to Ford Motor Company Purchasing and/or Quality Control. ENGINEERING MATERIAL SPECIFICATION ESB-M7C68-A Copyright 2012, Ford Global Technologies, L
8、LC Page 2 of 5 3.2 PHYSICAL PROPERTIES 3.2.1 Weight per Volume, min 0.766 at 23 2 C, Kg/L 3.2.2 Flash Point, min 11 C (ASTM D 93) 3.2.3 Viscosity, s 25 5 (FLTM BI 111-071) 3.3 FILM PROPERTIES 3.3.1 Color Sufficient color contrast shall exit between the coated and uncoated substrate to insure complet
9、e coverage of the surface. 3.3.2 Adhesion The material shall not loosen, sag or otherwise lose its protection value when tested in accordance with this specification. 3.3.3 Application Characteristics The material shall be capable of being applied with either “air“ or “airless“ spray equipment and b
10、y brushing. 3.3.4 Consistency The material shall be capable of being applied in one coat, by airless spray, to cover 9.30 to 11.60 sq. metres per 3.79 litres at a minimum film thickness of 203 m wet and 77 m dry with good leveling properties (no sags, runs, etc.). The material shall also be brushabl
11、e on flat and irregular surfaces to the specified film thickness. 3.3.5 Film Thickness, min 203 m wet (ASTM D 1212 & ASTM D 1005) 77 m dry 3.3.6 Drying Time The material shall be sufficiently dry to permit handling and assembly operations within 30 min after application. A low temperature bake not e
12、xceeding 70 C for 25 min will be necessary to reach the required material set in the specified time. 3.3.7 Heat Resistance The film shall not flow, separate or show other degenerative effects when exposed to 93 2 C for 30 min. Test Method: The top half of clean steel and aluminum panels shall be coa
13、ted with 76 5 m and 152 5 m dry film thickness of the specified material and allowed to condition for 72 h at 22 3 C. Prior to testing, a thin line shall be drawn across the panel 3 mm below and parallel to the edge of the coating. Suspend the panels vertically (coated end up) in an oven for 30 min
14、at 93 2 C. ENGINEERING MATERIAL SPECIFICATION ESB-M7C68-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 5 Remove and examine the panels. Any evidence of flow beyond the reference line or other signs of deterioration shall be considered failure. 3.3.8 Freeze - Thaw Resistance The material s
15、hall not crack, peel or lift from the surface of test panels after three exposures to -30 C with intermittent room temperature thaws. Test Method: Completely coat one side of clean steel test panels as described under para 3.3.7 and condition as indicated. Place the panels in a cold chamber maintain
16、ed at -30 2 C for one hour. Remove the panels and maintain at room temperature for one hour. Repeat the freeze-thaw exposures three times. Examine the panels for cracking, peeling or lifting which shall indicate failure. 3.3.9 Salt Spray Resistance, min 500 h (ASTM B 117, 5% salt solution) No rust a
17、nd pitting shall occur on the surface of steel panels coated on one side with 76 5 m of the specified material except for 4.7 mm from the scribe marks. 3.3.10 Corrosion Resistance 3.3.10.1 FLTM BI 123-01 (Lab. Simulated APG Test P3-76A) This test will usually be conducted with materials submitted by
18、 Engineering such as chrome plated steel bumper sections, each approximately 152 mm long. The entire inside surface of the bumper sections (3 min) shall be coated with 76 to 100 m dry film thickness of the test material and conditioned for 72 h at 22 3 C prior to testing. After 100 cycles of testing
19、, there shall not be more than one tenth percent (0.1%) of the surface covered with corrosion and not more than 4.8 mm of corrosion creep-in from the edges. No perforations or deep pitting permitted. 3.3.10.2 APG Test P3-76A This test shall be conducted with a minimum of 3 full size bumpers. The ent
20、ire inside surface of the bumper sections (3 min) shall be coated with 76 to 100 m dry film thickness of the test material and conditioned as in para 3.3.7 prior to shipment to the Arizona Proving Ground for testing. After 100 cycles of testing, there shall not be any perforations or deep pitting on
21、 the inside surface. The P3-76A test will take preference in cases where the pass or fail results differ between the FLTM BI 23-1 and P3-76A tests. ENGINEERING MATERIAL SPECIFICATION ESB-M7C68-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 5 3.3.11 Chip Resistance (ASTM D 3170) The applie
22、d coating shall be resistant to chipping caused by the impingement of gravel on the surface of 100 x 300 mm steel and aluminum panels coated with 76 5 m of the material and conditioned for 72 h at 23 3 C prior to testing. The test results shall not exceed a chip rating of 3 C. 3.3.12 Resistance to S
23、alt Water, Humidity and Thermal Cycle Prepare bumper sections for test as in para 3.3.10.1. Test Method: One cycle consists of the following: . Dip bumper sections in 5% neutral salt solution. . Dry samples for 1-1/2 h at room temperature, 22 3 C. . Place in humidity chamber at 85% relative humidity
24、 and 50 C for 19 h. . Dry samples for 1-1/2 h at room temperature. . Place samples in freezer at -30 C for 1/2 h. . Remove samples from freezer and leave at room temperature for 1/2 h. . Place samples in oven at 70 C for 1/2 h. . Remove samples from oven and leave at room temperature for 1/2 h. Afte
25、r 20 cycles, there shall be no discernible deterioration of the test coating. 3.3.13 Compatibility with Nonmetallic Materials The specified coating shall not produce any deleterious effect on nonmetallic materials used in bumper systems. Immerse the nonmetallic samples submitted by Engineering, in t
26、he liquid coating for 1 h. Clean the sample(s) with a compatible solvent and examine for compliance. 3.3.14 Resistance to Detergent Solution Coat steel and aluminum test panels with 76 5 m of the specified material and condition for 72 h at 22 3 C prior to testing. Immerse the panels about half way
27、into a detergent solution consisting of 10 grams of Dupont No. 7 car wash compound per 3.79 litres water maintained at 40 3 C. After 7 days immersion, the test coating shall have remained firmly adhered to the panels without any signs of degradation. 3.3.15 Storage Stability This rust preventive com
28、pound shall be stored at ambient room temperature below 38 C, away from all sources of heat. Under these storage conditions, the minimum shelf life of the material shall be 3 months without any change in composition or physical properties. When this material is stored at temperature below 23 C, it s
29、hall be conditioned at room temperature prior to application. Maximum application properties of the material are obtained through proper conditioning. ENGINEERING MATERIAL SPECIFICATION ESB-M7C68-A Copyright 2012, Ford Global Technologies, LLC Page 5 of 5 3.4 PRODUCTION VALIDATION TESTS PHASE I: The
30、 supplier shall test a production size batch per para 3.1, 3.2 and 3.3 of this material specification. All test results, with the exception of the results from para 3.3.9, 3.3.10 and 3.3.13, shall be approved by B&CE personnel and the supplier before any of the material is scheduled for a trial run
31、at the parts supply source. PHASE II: If the material passes the PHASE I requirements, then PHASE II can be implemented. Material from a production size batch must perform adequately during a trial application by a Ford parts supplier or an assembly plant. B&A Paint Operations and B&CE Materials and
32、 Corrosion Protection Engineering personnel shall determine if the material is satisfactory. 3.5 IN-PROCESS TESTS Statistical Specification Minimum Test Acceptance 3.5.1 Test Para. No. Sample Size Criteria Non-volatile 3.1.1 2 samples per batch All must pass Wt. Per Volume 3.2.1 2 samples per batch
33、All must pass Viscosity 3.2.3 2 samples per batch All must pass Color 3.3.1 2 samples per batch All must pass Consistency 3.3.4 2 samples per batch All must pass Drying Time 3.3.6 2 samples per batch All must pass Chip Resistance 3.3.11 2 samples per batch All must pass 3.5.2 Reaction Plan The mater
34、ial shall pass all the required tests before the batch is shipped to the Ford Motor Company or any of its suppliers. If a batch does not pass all requirements, chemical additives may be introduced to the batch prior to total quality control retesting. If the batch cannot be modified to meet all specified requirements, it shall not be shipped to the Ford Motor Company or to any of its suppliers. A batch shall not exceed 11,355 litres. 5. SAMPLING AND INSPECTION Sampling and inspection shall conform to the requirements of Quality Control Specification Q-101.
