1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2015 01 30 N Status No future use or replacement U. Mueller, EU 2004 03 12 Revised Para 3.0 inserted; paras 3.1, 3.2, 3.3, 3.8 and 4 deleted 1992 07 01 Released EP00E1017672000 C.Dittebrandt Copyright 2015, Ford Global Technologies, LLC Page
2、1 of 2 RUST PREVENTIVE, WAX, CAVITY PROTECTION, AEROSOL WSK-M7C89-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a solvent soluble rust preventive and is supplied as an aerosol. It dries to a soft film with high corrosion resistance. 2. APPLICATION The materia
3、l is used to provide additional protection against corrosion and is applied to automotive cavities after assembly and in service. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production
4、 Materials (WSS-M99P1111-A). 3.4 PHYSICAL PROPERTIES 3.4.1 Non Volatiles (FLTM AJ 102-01) According to approved initial sample + / - 1% 3.4.2 Shelf Stability, min 1 year 3.5 PREPARATION OF TEST PANELS (FLTM BJ 106-01) 3.5.1 Substrate The substrate shall be degreased Ford Standard Steel Panels accord
5、ing to SAE J403 Steel or UMA 18006 if not otherwise required. 3.5.2 Application Procedure Spray the test compound through a suitable spray nozzle with a 0.5 mm opening from a distance of 300 to 400 mm to a closed uniform film. 3.6 DRY FILM PROPERTIES 3.6.1 Dry Film Thickness 40 to 50 (ASTM D 1212) m
6、icrometer ENGINEERING MATERIAL SPECIFICATION WSK-M7C89-A Copyright 2015, Ford Global Technologies, LLC Page 2 of 2 3.7 RESISTANCE PROPERTIES 3.7.1 Salt Spray Resistance 480 h (ASTM B 117) No rust on plane panel area or more than 3 mm rust creepage from edges. 3.7.2 Influence on Painted Surface (FLTM
7、 BJ 128-04) Must not stain, soften, lift, or otherwise degrade released current production and service paint materials. Substrates: Ford standard steel panels painted with standard white and silver metallic with clearcoat from current production according to respective specifications. Test Method: S
8、pray one half of the painted panels with the test compound and condition for 1 h at 23 + / - 2 C. The test panels are stored in an oven at 16 h at 45 +/- 2 C. Wipe off the test compound and compare with the uncoated half for staining and test for evidence of softening. 3.7.3 Heat Resistance (FLTM BV
9、 118-01, modified as indicated below) Any evidence of flow shall constitute a failure. Spray half of the panel with the test compound and condition for 24 h at 23 +/- 2 C. Mark the edge of the wax and place the panel for 1 h at 80 +/- 2 C in a convection oven in a vertical position with the waxed half of the panel up. Examine for flow after removal from the oven. 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. Flash Point Below 21 C (ASTM D 93)
