1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action R evisions 2000 03 07 Activated N. Chamberlain G. Schuh Page 1 of 7 PRIMER, WATERBORNE CATIONIC ELECTROCOAT, WSS - M64J41 - A1 LEAD - FREE, HIGH THROW POWER, EDGE CORROSION RESISTANT, LOW BAKE - OFF LOSS, INITIAL FILL
2、 MAKEUP FEED, WATERBORNE CATIONIC WSS - M64J41 - A2 ELECTROCOAT, LEAD - FREE, HIGH THROW POWER, EDGE CORRO SION RESISTANT, LOW BAKE - OFF LOSS, RESIN MAKEUP FEED, WATERBORNE CATIONIC WSS - M64J41 - A3 ELECTROCOAT, LEAD - FREE HIGH THROW POWER, EDGE CORROSION RESISTANT, LOW BAKE - OFF LOSS, PIGMENT F
3、LOW CONTROL ADDITIVE WSS - M64J41 - A4 MAKEUP FEED, WATERBOR NE CATIONIC WSS - M64J41 - A5 ELECTROCOAT, LEAD - FREE, HIGH THROW POWER, EDGE CORROSION RESISTANT, LOW BAKE - OFF LOSS, PRE - BLEND 1. SCOPE The materials defined by these specifications are the basic components for lead - free, high - th
4、row power, high - edg e corrosion resistant cathodic electrocoat primer. These materials as a paint system are lower in bake off loss resulting in lower usage. 2. APPLICATION These specifications were released originally for a paint system when properly electrodeposited on vehicle bodies, sheet meta
5、l components or small parts will provide good corrosion resistance, adhesion and enamel appearance properties. These materials together make a paint system that is lead -free with high -throw power and high - edge corrosion resistanc e. WSS - M64J41 - A1: This material is the initial fill material a
6、nd represents the electrocoat bath during production. WSS - M64J41 - A2: This material is makeup feed material used to replenish the resins of the initial fill electrocoat bath. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 - A1/A5 Page 2 of 7 WSS - M64J41 - A3 : This material is makeup feed mater
7、ial used to replenish the pigments of the initial fill electrocoat bath. WSS - M64J41 - A4: This material is makeup feed material used to correct poor flow characteristics of the primer which may develop when the bath ages . This additive is used only as recommended by the supplier following ultrafi
8、ltrate purge or when discontinuous operation of an electrocoat tank results in evaporation of bath volatiles. WSS - M64J41 - A5: This material is a pre -blended makeup feed material used to replenish the resins and pigments of the initial fill electrocoat bath. The ratio of resin to pigment shall be
9、 agreed upon by the supplier, the affected assembly plant, Global Paint Engineering and Production Purchasing prior to delivery of the ma terial to the assembly plant. 3. REQUIREMENTS 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to Quality System Requirements, Q
10、S - 9000. Material specification requirements are to be used for initial qualification of m aterials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the relevant Ford Materials activity and/or Ford Supplier Technical Assistance (STA) prior
11、to production parts submission. Appropriate s tatistical tools must be used to analyze process/product data and assure consistent processing of the materials. Part producers using this material in their products, must use Ford approved materials and must conform to a process control plan which has b
12、e en approved by STA and/or the relevant Materials Activity. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR sp ectra and thermograms established for initia
13、l approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 -
14、A1/A5 Page 3 of 7 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to tes ting and tested under the same conditions unless otherwise specifi
15、ed. 3.4 COMPOSITION 3.4.1 Density, kg/L at 25 C Initial Sample (ASTM D 1475) +/ - 0.05 % 3.4.2 Non - volatile, weight % Initial Sample (FLTM BI 102 - 01) +/ - 0.05 % 3.4. 3 Weight Loss, max Initial Sample (FLTM BI 120 - 15) +/ - 0.05 % (Not to exceed 8.0%) Measure weight loss after 10 minutes at 182
16、 +/ - 2 C metal temperature bake cycle. 3.4.4 Solvent Emissions, max 0.096 kg/L of (ASTM D 3960) wet paint This requirement is as determined by the United States Environmental Protection Agency Reference Method #24 but is only applicable to materials used in the USA. 3.5 STABILITY 3.5.1 Pumping Stab
17、ility, min 21 days (FLTM BI 120 - 04) After 21 day min agitation, the bath prepared from the initial fill or feed materials shall meet all requirements of the specification. 3.5.2 Storage Stability, min 2 months During storage of 2 months between 5 and 32 C temperature the material as supplied shall
18、 not settle or cake. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 - A1/A5 Page 4 of 7 3.6 PREPARATION OF TEST PANELS Coating System I - Electrocoat Only Coating System II - Electrocoat and Primer Surfacer Coating System III - Total Paint System 3.6.1 Substrates Auto body steel, alum inum, pre - c
19、oated or electroplated zinc or zinc alloy coated steel and zinc die - casting or as specified on Engineering documents. 3.6.2 Substrate Condition Clean the surface by an automated process to ensure the absence of oil or alkaline residues, f ingerprints, corrosion, dirt, moisture, and other foreign m
20、aterials. 3.6.3 Coating Material 3.6.3.1 Zinc Phosphate (All Panels) Zinc phosphate coating per WSS - M3P1 - D for cold rolled steel, pre - coated, electroplated zinc or zinc alloy coated ste el and zinc die - castings. Aluminum when processed alone should use chromium oxide coating per WSK - M6P2 -
21、B. If steel and aluminum parts are processed concurrently, apply zinc phosphate per WSS - M3P1 - D. Do not exceed the aluminum tolerance of the proces s. Steel and aluminum parts are to meet all requirements of both WSS - M3P1 - D and this specification. 3.6.3.2 Cathodic Electrocoat (Coating System
22、I) Ford Engineering approved current production materials or material under evaluation. Film thickne ss requirements are based on current production requirements or direction of materials engineer. Baking requirements are 10 minutes at 165, 175 and 200 C metal temperature. 3.6.3.3 Electrocoat and Pr
23、imer Surfacer (Coating System II) Ford Eng ineering approved current production materials. 3.6.3.4 Total Paint System (Coating System III) Ford Engineering approved current production materials. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 - A1/A5 Page 5 of 7 3.7 APPEARANCE 3.7.1 Color (FLTM BI 1
24、09 - 01) Initial Sample 3.7.2 Leveling 3.7. 2.1 Smoothness The surface of the electrocoat primer shall be smooth without any structure and not more than a min of orange peel when applied and baked as required in Coating System I. 3.7.2.2 Gloss Initial Sample (FLTM BI 110 - 01) +/ - 5 % Use a 60 deg
25、glossmeter for gloss measurements. 3.7.3 Holdout Apply the enamel color coat over unsanded electrocoat primer. Failure is evidence of dulling or change in image clarity compared to current approved production electrocoat enamel (C oating System III). 3.8 RESISTANCE PROPERTIES The material defined by
26、 this specification must meet the requirements of WSS - M2P182 - A. 3.9 MATERIAL COMPATIBILITY The material must be compatible with all related materials, for example, electrocoats, sealers, and adhesives. The supplier of this material shall keep abreast of changes in technology of related materials
27、, which may affect the compatibility and performance of this product. The supplier shall notify the appropriate Ford Product Materials Engineering Office in writing when incompatibility is anticipated. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 - A1/A5 Page 6 of 7 3.10 SUPPLIERS RESPONSIBILITY
28、All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this spe
29、cification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity.
30、 Test data, test samples and a new code identification are to b e submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The regulations are defined in Engineering Materials Specification WSS - M99P9999 - A1. 4. APPR
31、OVAL OF MATERIALS Ma terials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Material s Engineering activity.
32、 Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of this specification (test res
33、ults, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or applications. Upon approval,
34、the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. The corrosion resistance required in this specification is the basis of corr
35、osion protection of vehicle body steel. Test Panels and parts, which meet this specification , will also conform to the corrosion requirements of WSS - M2P180 - A. ENGINEERING MATERIAL SPECIFICATION WSS - M64J41 - A1/A5 Page 7 of 7 5.1 Panel Information 5.1.1 Standard Steel Panels Standard steel pan
36、els are laboratory quality mild coal rolled steel available clean or zinc phosphated. Qualified coil stock is available from Advanced Coating Technologies, Inc.* OR Use panels prepared in accordance with Ford Manufacturing Standard U - MA001 - 8001. 5.1.2 Electrogalvanized Steel 50 - 80 g/m2 Qualifi
37、ed coil stock is available from Advanced Coating Techn ologies, Inc.* OR Use panels complying with relevant grades of WSB - M1A250 - C3 and WSB - M1A311 - B2. 5.1.3 Aluminum Panels Aluminum panels (AA6111) can be obtained from Advanced Coating Technologies, Inc.* 5.2 Panel Preparation Panels can be prepared and or tested at: * Advanced Coating Technologies, Inc. PO Box 735 273 Industrial Dr. Hillsdale, Michigan 49242 (517) 439 - 1485
