1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Para. No. Revisions1980 06 04 Released CZK1-CTK1-CBK1-PR584974-1 LMWP 3948-a Page 1 of 10ENAMEL, ACRYLIC BAKING, NON-AQUEOUS DISPERSION ESB-M50J107-A(NAD), INTERMEDIATE SOLIDS, EXTERIOR BODY QUALITY1. SCOPEThe material defined
2、 by this specification is an amino modified thermo-setting acrylic resin, in the form of finely divided particles dispersedin a non-aqueous solvent, which is a pigmented baking gl oss enamel suitablefor exterior exposure.2. APPLICATIONThis spe cification was released originally for paint used as the
3、 finalcolor co at on automotive bodies, hood, fenders and other exterior parts,and shal l be satisfactory for use over specified primer, enamel sealers,or over-baked enamel, as in repair or tu-toning operations.3. REQUIREMENTS3.1 COMPOSITION3.1.1 Vehicle SolidsThe vehicle solids shall be melamine mo
4、dified acrylicpoly mers with minor amounts of other modifiers and/orplasticizers. No alkyd resin modification is permitted.3.1.2 PigmentShall be balanced and blended so that the finished enamelmatc hes the Ford Motor Company master panel in color andluster and meets the requirements of this specific
5、ation fordurabili ty. Any color which contains 70% or more aluminummetal flake pigment in its pigment composition shall besuppli ed with 2% Tinuvin 328 or Uvinol 400 ultravioletabsorber, based on the vehicle solids of the color.3.1.3 Specific CompositionWhen it is necessary to obtain specific data r
6、eg arding enamelformu lations, it is understood that suppliers will furnishsuch data on request.ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 2 of 10 3.1.4 VolatileProportions of Solvents : The proportions of solvents in thevolatile portion shall be so arranged that the enamel willle
7、vel out satisfactorily on spray application. T he volatilityof the solvents is to b e selected to provide a dried film of0.00 150 in (38.1 Fm) minimum without sagging and withsatisf actory freedom from roughness or dry spray. Thevolatile portion shall contain sufficient active solvents togive satisf
8、actory adhes ion when the enamel is applied over apreviously baked coat of the enamel.3.1.5 Volatile Organic Compound (V.O.C.) at Application ViscosityCalculate V.O.C. as follows:V.O.C. = % Volatile x lb/gal-100The pe rcent volatile is determined per ASTM D 2369 exceptth at the oven exposure time sh
9、all be 60 minutes at 110 ECinstead of 20 minutes. The lb/gal is determined per ASTMD 1475.Color V.O.C. (max). Light metallic colors 5.0. Medium metallic colors 4.9. Dark metallic colors 4.9. Black 4.8. All dark solid colors 4.8(less than 20 % TiO )2. Reds, maroons, oranges 4.8(less than 20 % TiO or
10、less than280 % lead or molybdenum chromate). Medium dark colors 4.8(20 - 80 % TiO )2. Medium colors (80 - 95 % TiO ) 4.62. Light colors (95 % or more TiO ) 4.62. Chrome colors (80 % or more lead 4.6or molybdenum chromate). White 4.5ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 3 of 1
11、0 3.1.6 Specific CompositionSuppliers shall furnish, on request, certification ofconformance to para 3.1.4 of this specification to Ford MotorCompa ny Purchasing, AAD Paint Operations, and the assemblyplant involved for each color supplied.3.1.7 ToxicityThe enamels shall conta in no benzol (benzene)
12、 chlorinated orother toxic compounds, or hydrolyzable chlorine derivativesor have an obnoxious or objectionable odor.3.2 PHYSICAL PROPERTIES3.2.1 Viscosity (Package)(FLTM BI 11-1)25 +/- 5 s #4 Ford Cup, at 23 +/- 2 EC during first 30 daysafter manufacture, 50 s maximum after 90 days.3.2.2 Shelf Stab
13、ilityShall not jell or liver upon standing and must be free fromsettling which is not dispersed by normal agitation.3.2.2.1 Oven Stability(FLTM BI 2-3)The viscosity of the enamel shall not increase morethan 15 s.3.2.3 Hiding Power, Wet(FLTM BI 1-1)Maximum black and white Cryptometer readings are sho
14、wn in thetable, para 3.2.4.Test Conditions:. Viscosity 18 +/- 2 s #4 Ford Cup at 23 +/- 2 EC. Wedge constant 0.002 in (0.05 mm) for Black0.007 in (0.18 mm) for all other colors Reduce enamel with 90% Gage 4104 and 10% Gage 4120.ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 4 of 10 3.
15、2.4 Hiding, Gloss and Distinctness of ImageHiding(1) Gloss DIMax Min MinColor (3.2.3) (3.4.2) (3.2.6). Light metallic colors (2) 72 42. Medium metallic colors (2) 76 50. Dark metallic colors (2) 76 60. Black 15 88 90. All dark solid colors 18 80 85(less than 20 % TiO )2. Reds, maroons, oranges 20 78
16、 75(less than 20 % TiO or less2than 80 % lead or molybdenumchromate). Medium dark colors 18 80 85(20 - 80 % TiO )2. Medium colors (80 - 95 % 14 80 85TiO )2. Light colors (95 % or 14 80 80more TiO )2. Chrome colors (80 % or more (2) 80 80lead or molybdenum chromate). White 14 76 80(1) For Quality Con
17、trol t ests, use wet hiding valuesshown in the table. For initial approval, the dryhiding requirements (3.2.5) or 1.5 mils (38 Fm)must be met for all colors. When a discrepancyexists, final decision shall be made on the ba sisof dry hiding (3.2.5).(2) See para 3.2.5 for dry hiding requirements.3.2.5
18、 Hiding Power, Dry(FLTM BI 1-5)The en amel shall have complete visual hiding at 0.0015 in (38 Fm) dry film thickness.3.2.6 Distinctness of Image(FLTM BI 10-3)The values shall be as shown in para 3.2.4 when measured on aflat test pan el with a Hunter Lab D47-6 Dori-Gon, Distinctnessof Image Meter.ENG
19、INEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 5 of 10 3.3 PREPARATION OF TEST PANELS(FLTM BI 3-2)The following requirements are specifi c for these materials in additionto those shown in test method.3.3.1 Spray Primer-Enamel SystemApply ESB-M6J119-B reduced to 43 +/- 2 s #2 Ford Cup wit
20、happro priate thinner to 0.0010 in (25 Fm) total dry filmthickne ss. Bake primer 20 min at 163 EC metal temperature foradhesion tests per para 3.5.3 and 20 min at 149 EC (8 minminimum at 135 EC metal temperature) for all other tests.Sand 1/2 of one panel for adhesion tests only.3.3.2 EnamelAp ply en
21、amel reduced to 18 +/- 2 s #4 Ford Cup at 25 EC with 90 % Gage 4104 and 10% Gage 4120 to a dry film thickness of0.0 015-0.0020 in (38 - 51 Fm) (enamel only). Bake per para3.3.6.3.3.3 Electrocoat Primer-Enamel SystemApply a currently approved electrocoat primer to a dry filmthickness of 0.0070 +/- 0.
22、00010 in (17.8 +/- 2.5 Fm dry filmthicknes s. Bake 20 min at 182 EC, minimum (10 min at182 EC metal temperature, minimum).Sand 1/2 of one panel for adhesion tests only.3.3.4 Enamel Sealer(If apprpriate)Apply ESB-M99J222 (reduced to 37 s #2 Ford Cup at 25 EC withsol vent currently used in production)
23、 to 0.00050-0.000075 in(12.7-19.1 Fm)dry film thickness. Bake 20 min at 138 +/- 2 EC.3.3.5 AgingAge panels before testing as shown in the respective tests.3.3.6 Baking CyclesThe following three baking schedules are required:. Standard bake 17 min a t 129 EC - ambient. Minimum 8 min at 118 EC plus an
24、addition al 3 min at 129 EC-metal temperature. Maximum 20 min at 143 EC-metaltemperatureENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 6 of 10 The standard bake shall apply to the following tests:Para 3.4.1 ColorPara 3.4.2 GlossPara 3.5.4 BleedingPara 3.6 Resistance propertiesPara 3.7
25、.1 Repair color matchThe minimum bake shall apply to the following tests:Para 3.5.3 AdhesionPara 3.7.2 Intercoat adhe sion (secondenamel coat)The maximum bake shall apply to the following tests:Para 3.4.1 ColorPara 3.4.3 Gloss after rebakePara 3.7.2 Intercoat adhesion (firstenamel coat)3.4 APPEARANC
26、E3.4.1 Color(FLTM BI 9-1)Shall match the Ford Motor Company mas ter panel after baking asdescribed in para 3.3.6. Prepare master panels for light andmedium metallics at spray viscosities defined in para 3.3.2.3.4.2 Gloss(FLTM BI 10-1, 20 E Glossmeter)Mi nimum gloss requirements, by color class, are
27、shown in para3.2.4 for panels baked at standard bake, para 3.3.6.3.4.3 Gloss After RebakeUsing a 20 E Gardner Glossmeter, no more than 4 units decreasein gloss is permitted when panel is rebaked per para 3.3.6.3.4.4 GeneralThe enamel shall bake out to a presentable, serviceable filmshowing no cr ate
28、rs, pinholes, seediness, abnormal roughness orexcessive metallic mottling. It shall have a reasonabletolerance for ordinary cleaning, and exhibit excellentpolishing characteristics when wheel p olished with a wide rangeof various compounds and cleaners.3.5 FILM PROPERTIES3.5.1 Film Thickness (Enamel
29、 Only) 0.0015-0.0020 in (38 - 51 Fm)(FLTM BI 17-1)ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 7 of 10 3.5.2 HardnessFLTM BI 12-1, Sward (Alternate),min 36FLTM BI 12-2, Tukon, K.H.N., min 7.5Bake panels per standard schedule in para 3.3.6.Hardne ss and polishing characteristics shal
30、l be such thatairbor ne dirt dried in the film, dry spray areas, or othersurface defects can be removed by sand ing and polishing. Aftersan ding with #600 grit paper lubricated with mineral spirits,then wheel polished with a medium grit compound, there shall beno no ticeable change in the sheen betw
31、een the polished andunpolished areas.3.5.3 AdhesionThe en amel shall be baked per minimum schedule shown in para3.3.6.3.5.3.1 Scratch Test(FLTM BI 6-1)No chipping over sanded or unsanded primer.3.5.3.2 Chip Resistance(FLTM BI 7-1)A minimum o f 80 % of the enamel shall be retained onthe test panel. C
32、hipping shall not exceed Fig 3.3.5.4 Bleeding None permitted(FLTM BI 14-1)3.5.5 PolishingThe enam el surface shall be capable of being sanded andpol ished, or polished only, to minimize orange peel or toremove defects. No noticeable change in gloss or appearanceexcept for a minimum of polishing line
33、s shall result. Deeppolishing lines or swirl marks are not acceptable.3.6 RESISTANCE PROPERTIES3.6.1 Salt Spray Resistance, min 240 h(FLTM BI 3-1)No bli stering, no more than 1/8 in (3 mm) rust creepage, orloss of adhesion, from a line scribed through the bare steel.3.6.2 Water Immersion, min 240 h(
34、FLTM BI 4-1)No blistering, peeling, dulling, or roughening.ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 8 of 10 3.6.3 Weathering ResistanceSteel panels prepared per para 3.3, us ing the standard bake andcatal yzed repair enamel prepared per FLTM BI 15-2 shall beexpose d at 5 E facin
35、g south in the Miami, Florida, area for 12months. Exposed panels shall be washed and polished per FLTMBI 3-5. After exposure, the panels sh all show no more evidenceof chalking, dulling, fading, or other color change than thestan dard master sample on file in the Body MaterialsEn gineering Departmen
36、t and shall be no worse than thatexhibited on the exposure panels which were submitted by thesupplier as p roof of durability. In addition, panels shall befree from checking, cracking, peeling, blistering and rustingafter exposure. High metallic colors shall not exhibitpeelin g or blistering when im
37、mersed in deionized water for 16 h and tested per FLTM BI 4-1 after completion of Floridaexposure testing.Th e Florida exposed panels will be prepared for assessment asfollows:1/3 washed and polished1/3 washed only1/3 will remain as received from Florida3.6.4 Accelerated Weathering(FLTM BO 1-1)Panel
38、s prepar ed for FLTM BI 3-2 shall show a minimum degree offading, chalking or dulling. No increase of brittleness orloss of adhesion is permitted and panels shall be completelyfree from evidence of cracking, checki ng, blistering or peelingwhen exposed for 400 h in an Atlas XW Weatherometer.Flo rida
39、 exposure results shall take precedence overWeatherometer results.3.6.5 Resistance to Water and Soap Spotting(BI 13-1)3.6.5.1 Water Spot Discoloration None permitted3.6.5.2 Soap Spot Discoloration None permitted3.6.6 Resistance to Acid Spotting(BI 13-5)No discoloration after 10 min. Discoloration af
40、ter 20 and 30min shall be no greater than the standard on file in the BodyMaterials Engineering Department Laboratory.3.6.7 Cold Checking Resistance(FLTM BI 7-2)Shall withstand a minimum of 10 cold test cycles withoutcracking or noticeable dulling when cu red at the minimum bakingtemperature.ENGINEE
41、RING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 9 of 10 3.6.8 Resistance to Xylene (Reagent Grade)No d ulling, softening or other undesirable effects after theena mel, which has been aged 72 h, is rubbed 10 times in acircular motion with a pad of cheesecloth wetted with xyleneand allowed a 5
42、minute recovery period.3.6.9 Sag Resistance(FLTM BI 22-1)Shall be equivalent to the control enamel.3.7 REPAIR REQUIREMENTS3.7.1 Repair Color Match(FLTM BI 15-1)Enamel shall show satisfactory color match after recoating andrebaking at standard bake.3.7.2 Intercoat Adhesion(FLTM BI 6-2, Method “B“)No
43、loss of adhesion over sanded or unsanded color coat.3.7.3 Repair Using Catalyst(FLTM BI 15-2)Ena mel shall show satisfactory color match and intercoatadhesion and have a minimum hardness of 5 K.H.N. using anappro ved catalyst at recommended concentration. Bakingtemperatur e for the repair coat shall
44、 be 20 min at 99 EC(ambien t) with a minimum of 5 minutes at 99 EC (metaltemperature).3.7.3.1 Weathering ResistancePanels shall be prepared per FLTM BI 15-2 and exposedat 5 E facing south in the Miam i, Florida, area for 12month s. The catalyzed repair enamel shall meet allrequirements of para 3.6.3
45、.3.8 Prod uction shipments shall be equivalent to approved purchase samplesin laboratory and production use.3.9 SUPPLIERS RESPONSIBILITYMateri al supplied to this specification must be equivalent to thator iginally approved. Changes in formulation or processing shall notbe made witho ut prior approv
46、al as described in Supplier Procedure I-A.ENGINEERING MATERIAL SPECIFICATIONESB-M50J107-AWP 3948-b Page 10 of 10 4. APPROVAL OF SUPPLIERSSupplier s to this specification must be approved by the affected productengineering office. Procedure for gaining app roval of a specific material toa new/ex isti
47、ng ES-M specification is contained in Supplier Procedure I-A. Appproved new suppli ers will be added to the Engineering Materials ApprovedSource List.5. GENERAL INFORMATIONThis information is for direction of the user and is not a requirement for thesupplier.5.1 FLAMMABILITY AND/OR TOXICITYThis ma t
48、erial represents a potential fire and/or health hazard. TheManu facturing Engineering Department shall notify both the PlantSecurity and the Safety Units of its presence in the Plant to assuretha t proper fire and/or health precautions are provided. The locationin which it is used or stored shall be
49、 included in the notifications.5.2 WEIGHT SOLIDS, minWeight Solids (%) at Application Viscosity(ASTM D 2369 and ASTM D 1475)Minimum solids content for various col or classes are shown in the tablepara 5.2.1. These solids limits apply to enamels adjusted to a viscosityof 18 s #4 Ford Cup at 25 EC.Calculate % wt solids as follows:lb/gal at application viscosity - V.O.C. x 100% wt solids = -lb/gal at application viscosity5.2.1 % Weight Solids, minColor Solids Weight %. Light meta
