1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para. No. Revisions Ver. 3 2008 08 28 N-STATUS No Replacement Named G. Weber, FNA 1979 01 10 Metricated & Retyped CAQH2-823385 1976 04 01 Released COF2-766677 WP 3948-a Page 1 of 3 CORROSION PREVENTIVE - COMPOUND ESA-M99P9-A
2、 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a corrosion preventive compound containing no chlorinated solvents, asphalt, or fibrous filler such as asbestos. 2. APPLICATION This specification was released originally for coating vehicle frames and chassis comp
3、onents. 3. REQUIREMENTS 3.1 FINISH The coating shall be homogeneous, free from grit and other impurities and shall air dry to a pliable low gloss film. 3.2 COLOR Should be dark in color with sufficient hiding power so that all metal is obscured. 3.3 FLASH POINT, min 39C (ASTM D 93, Cleveland open cu
4、p 1C/min temperature rise or Pensky Martins closed cup) 3.4 WEIGHT PER VOLUME, lbs (kg/L) 7.35 +/- 0.20 (0.88 +/- 0.02) (FLTM BI 2-2) 3.5 NONVOLATILE SOLIDS, % by 40 weight, min (FLTM BI 2-1) 3.6 VISCOSITY, cPs 500 - 2,000 (Brookfield - Viscometer spindle #3, 50 rpm) 3.7 PERFORMANCE TESTS* 3.7.1 Gra
5、velometer at -18C Chip rating of 6 or better (SAE J 400 or FLTM BI 7-1) ENGINEERING MATERIAL SPECIFICATION ESA-M99P9-A WP 3948-b Page 2 of 3 *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 is reduce
6、d with appropriate solvent and applied by dipping to a dry film thickness of 0.0015 - 0.0025 in (38 - 64 m). After flash drying, the coating is force dried for 20 min at 82C. 3.7.2 Corrosion Resistance (ASTM B 117) Face rust, 1,000 h Less than 5 % Scribed, 336 h* No greater than 1/8 in (3 mm) creepb
7、ack *Panels aged 72 h at room temperature prior to salt spray exposure to allow healing of coating film 3.7.3 After Gravelometer* Less than 5 % (168 h) face rust 3.7.4 Humidity and Thermal Cycle Test, min 10 cycles No blistering, peeling, lifting, blooming, sagging, cracking or other surface defects
8、. Test Cycle: . 16 h humidity - 100 % R.H. at 38C . 2 h at -18C . 2 h at room temperature . 4 h at 70C 3.7.5 High Temperature Adhesion No sag, flow or drippage Flash dry 10 min, then expose vertically in oven for 4 h at 82C. 3.8 INFRARED SPECTROPHOTOMETRY Ford Motor Company, at its option, may condu
9、ct infrared analysis of material/parts supplied to this specification. The curves established for initial approval shall constitute the reference standard and shall be kept on file at Central Laboratory. All samples shall produce curves that correspond to the reference standard when tested under the
10、 same conditions as those specified on the master curve. 3.9 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. ENGINEER
11、ING MATERIAL SPECIFICATION ESA-M99P9-A WP 3948-b Page 3 of 3 4. APPROVAL OF SUPPLIERS Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List.
