1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 04 12 N Status No usage or replacement N. Benipal, NA 2004 03 23 Revised Para 3.0 inserted; paras 3.5 and 4 deleted 1981 08 18 Released TL2-012H-12 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page
2、 1 of 2 RUST PREVENTIVE, THIN FILM - ALUMINUM ESL-M7C58-A PIGMENTED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thin film aluminum pigmented wax based solvent cutback rust and corrosion preventive compound. 2. APPLICATION This specification was released ori
3、ginally for material to provide corrosion protection for chassis components such as leaf springs that require a corrosion preventive with low temperature resiliency and anti-squeak capabilities. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
4、must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 APPLICATION CHARACTERISTICS Shall be suitable for application by dipping, spraying or brushing at room temperature (15 - 35 C) to the suppliers recommended film thickness. It shall be removable by petro
5、leum solvent, kerosene, approved chlorinated solvent or vapor degreasing. 3.2 FILM CHARACTERISTICS Shall form a homogeneous, stable, non-corrosive, protective film free of sediment or other contaminants. 3.3 MATERIAL REQUIREMENTS 3.3.1 Specific Gravity at 20 C 0.890 - 0.920 (ASTM D 1298) 3.3.2 Visco
6、sity at 25 C 55 - 85 s (FLTM BI 111-01) 3.3.3 Weight Per Volume at 25 C 7.50 - 7.60 (ASTM D 1475) lb/gal (0.90 - 0.91 kg/L) 3.3.4 Flash Point, min 38 C (ASTM D 93) ENGINEERING MATERIAL SPECIFICATION ESL-M7C58-A Copyright 2012, Ford Global Technologies, LLC. Page 2 of 2 3.3.5 Solvent Content, % Weigh
7、t 44 - 52 (FLTM BI 102-01 or MIL-C-16173D) 3.3.6 Pour Point, min +10 C (ASTM D 97) 3.4 PERFORMANCE REQUIREMENTS Test panels for all performance specification tests are 4 x 12 in (100 x 300 mm) cold rolled body sheet steel (unpolished 20 gage). The test coating should be applied to a wet film thickne
8、ss of 3-4 mils (76-102 m) and allowed to air dry for 24 h prior to performance testing. The dry film thickness should be 1.5-2 mils (38-51 m). 3.4.1 Thermal/Humidity Cycle Test Run 10 cycles as follows: 16 h Humidity Chamber 100% R.H. at 38 C 2 h at -30 C 2 h at Room Temperature 4 h at 70 C No blist
9、ering, peeling, lifting, sagging, cracking or other surface defects which allow exposure to bare metal. Color change OK. 3.4.2 Gravelometer/Salt Spray Test Better than Fig. #6 (SAE J 400/ASTM B 117) (FLTM BI 007-01)/Less than 5% Face Rust Run gravelometer test after conditioning panels 4 h at -30 C.
10、 Age 24 h at room temperature, then subject to 336 h salt spray. 3.4.3 Scribed Salt Spray Test Undercutting to 6 mm (FLTM BI 103-01) maximum Scribe an “X“ through material film and age 24 h. Subject to 336 h salt spray. 3.4.4 Cold Flexibility No cracking or loss of (FLTM BI 105-01) adhesion Conditio
11、n panels at -30 C for 4 h. While at that temperature, test flexibility by conical mandrel. Bend should be accomplished within 5 s of initiation. 3.4.5 Flow Point, min 100 C Test Method: The top half of a clean steel panel shall be dipped in the rust preventive compound, removed and allowed to dry in
12、 a vertical position for 24 h at 23 +/- 2 C. A thin line shall be drawn across the panel 1/8 in (3.0 mm) below and parallel to the bottom edge of the coating on the panel. The panel shall be suspended vertically, coated side up, in an oven at 100 +/- 2 C for 1 h, removed and examined for evidence of flow as indicated by any part of the bottom edge of the coating approaching the reference mark. Evidence of flow will be considered as failure.
