1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Ver 4 2008 04 11 Activated Added WSS-M7C80-A4; Revised 3.5.1, 3.5.2, 3.5.4, 3.6.3, 3.6.4 3.6.5, 3.7.1, 3.8.4, 3.8.5; Deleted 3.4 paras 3.1, 3.2, 3.3, 3.13 and 4 deleted 1995 06 02 Released EP00E10521613000 K. Wolters Printed copies are uncontr
2、olled Copyright 2008, Ford Global Technologies, LLC Page 1 of 5 RUST PREVENTIVE, WAX, SOLVENT BASED, UNDERBODY WSK-M7C80-A2 PROTECTION, HIGH SOLID CONTENT RUST PREVENTIVE, WAX, SOVENT FREE, UNDERBODY WSK-M7C80-A4 PROTECTION, BLACK 1. SCOPE The materials defined by these specifications are a solvent
3、based high rust preventive compound with minimum 85% solid content solid and solvent free based with minimum 99 +/- 1% solid content. 2. APPLICATION These specifications were released originally for material used as corrosion protective compound for vehicle underbodies and underbody assembled parts.
4、 It forms a soft, homogenous film with good corrosion protective properties. The material is designed for application to the assembled vehicle. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements
5、For Production Materials (WSS-M99P1111-A). 3.5 PHYSICAL PROPERTIES A2 A4 3.5.1 Non Volatile content, min 85% 99% (FLTM BI 102-01) 3.5.2 Viscosity See Initial Sample 3.5.3 Storage Stability, min The storage stability must be adapted to the climate conditions at the individual plant. Min storage condi
6、tions for all waxes: 6 months at 32 C and 6 months at 5 C Additionally for tropical climates: 3 months at 40 C After the storage, the material shall not show any insoluble separation or coagulation and must meet all specification requirements. ENGINEERING MATERIAL SPECIFICATIONWSK-M7C80-A2 WSK-M7C80
7、-A4 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5.4 Density See Initial (ASTM D 1475) Sample +/- 0.05 g/mL A flow diagram to identify the characteristic properties of the wax shall be added to the Initial Sample Report, together with a list of all test
8、 parameter (temperature, shear rate, time, etc.) and equipment details. 3.6 PREPARATION OF TEST PANELS 3.6.1 Substrate (FLTM BJ 106-01, Solvent wiped) Ford Standard Steel Panels according to SAE J403 Steel or UMA 18006, if not otherwise required. 3.6.2 Wax Application Prior to application the wax mu
9、st be stirred for 15 minutes or as recommended by the supplier. The wax may be applied airless or by air assisted spray in one coat without intermediate flash off. The panel back side may be protected by a thin wax layer during the following tests. Edges shall not be protected by any additional acti
10、on. A2 A4 3.6.3 Application Temperature 20 25 C 35 -40 C 3.6.4 Drying Time 5 minutes 60 minutes (23 +/- 2 C) 3.6.5 Dry Film Thickness See Initial 100m (FLTM BI 156-01 or gravimetrically) Sample 3.7 DRY FILM PROPERTIES 3.7.1 Color Light beige or acc. Black to the Initial Sample 3.7.2 Appearance Smoot
11、h homogeneous film 3.7.3 Water Resistance The wax film shall be resistant against water impingement immediately after drying per para 3.6.4. 3.7.4 Removal The wax film must be removable at any time by a suitable solvent as recommended by the supplier. ENGINEERING MATERIAL SPECIFICATIONWSK-M7C80-A2 W
12、SK-M7C80-A4 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 3.8 RESISTANCE PROPERTIES Test shall be performed on panels prepared according to para 3.6 of these specifications if not otherwise required. 3.8.1 Salt Spray Resistance 480 h (ASTM B 117) Evaluatio
13、n (after de-waxing): No corrosion on the panel surface and not more than 3 mm rust creepage from edges is allowed. 3.8.2 Humidity Test 480 h (40 +/- 2 C and 98 +/- 2% RH) Test Method: Prepare test panels with 40 - 50 and 70 - 80 micrometer film thickness and place them in a humidity cabinet (condens
14、ing water on waxed panel surface), 15 - 30 to the vertical. Evaluation: No rust on the panel surface and not more than 3 mm rust creepage from edges; no blisters, no slipping of the wax or any damages of the film allowed. Light re-emulsification may be accepted if reversible within 24 h after test e
15、nd. 3.8.4 Resistance Against High Temperature no flow (1 h at 80 +/- 2 C) Test Method: Spray wax to one half of an electrocoated test panel. Mark the edge and place the panel vertically in a convection oven, wax side up. Evaluation for flow after 1 hour. 3.8.5 Resistance Against Low Temperature -30
16、C (ASTM D 522, Method B) Test Method: Prepare test panels with 40 - 50 and 70 - 80 micrometer film thickness and place them in a cold box for 24 h, together with a mandrel of 30 mm diameter. While in the cold box, bend the panels 180 C over the mandrel. Evaluation: No cracking or chipping allowed. E
17、NGINEERING MATERIAL SPECIFICATIONWSK-M7C80-A2 WSK-M7C80-A4 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 3.9 INFLUENCE ON PAINTED SURFACES Substrates: Ford Standard steel panels and plastic panels or actual production parts, painted with current production
18、 as well as repair top coats; white and silver metallic. Test Method: Spray wax on one half of each specimen and place them for 16 h in an oven at 45 +/- 2 C. After test end remove the wax with a cloth and a suitable solvent per para 3.7.4. Evaluation: The wax must not strain, soften, lift, or other
19、wise degrade current production or repair paint materials. 3.10 STAINING OF UNPAINTED PLASTIC BUMPER MATERIAL (only if applicable) Substrates: Samples from white and dark grey current production bumper material. Test Method: Spray wax on one half of each specimen and place them for 16 h in an oven a
20、t 45 +/- 2 C. After test end remove the wax with a cloth and a suitable solvent per para 3.7.4. Evaluation: The wax must not stain, soften, or otherwise degrade the plastic substrate. 3.11 INFLUENCE ON UNDERBODY STONE CHIP PROTECTION MATERIAL (ASTM D 968) Substrates: Prepare electrocoated test panel
21、s with current production stone chip protection material for the underbody application and film build as required in the relevant material specification. Test Method: Spray wax on one half of the specimens and age them for 7 days at 23 +/- 2 C. Perform abrasion tests as required in the specification
22、 of the stone chip coating material. After test end remove the wax with a cloth and a suitable solvent per para 3.7.4. Evaluation: The wax under investigation shall not deteriorate the resistance of stone chip protection underbody coatings. ENGINEERING MATERIAL SPECIFICATIONWSK-M7C80-A2 WSK-M7C80-A4
23、 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5 3.12 INFLUENCE ON PLASTIC AND RUBBER ASSEMBLY PARTS Substrates: Specimens of rubber or plastic parts placed in the spraying area during application such as: brake hose, fuel line or heater hose. Test Method: S
24、pray wax onto the test specimens and age for 7 days at 23 +/- 2 C. After test end wipe off the test compound with a cloth and a suitable solvent per para 3.7.4. Compare volume and hardness of the test specimens with untreated parts. Evaluation: The material under test shall not deteriorate propertie
25、s of rubber or plastic assembly parts. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 MATERIAL REFERENCE All related materials used for approval of wax according to this specification, e.g. substrate materials, paint materials, solvents, etc. as well as the application parameter shall be noted in the Initial Sample Report of the wax.
