1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 21 Revised and Retyped was: 13 pages1984 05 17 B/701890 TP Deleted 3.1.5, revised 3.3, 3.8 added1978 07 07 B/118406 TP ReleasedWP 3948-a Page 1 of 7 STONE PECK RESISTANT REPAIR MATERIAL INACTIVE SK-
2、M99J9589-ASTONE PECK RESISTANT REPAIR MATERIAL SK-M99J9589-C1. SCOPEThe materials defined by this specification are stone peck resistant repairmaterials for areas on which originally stone peck resistant materialSK-M99J9587-A has been applied and has been damaged or scratched.Furthermore, the materi
3、als can be used as a primer on the underbody forvery small spots which due to unavoidable process conditions, e.g. mountingof body skids, are only degreased, zinc phosphated or electrocoated.SK-M99J9589-A is a waterborne stone peck resistant material.SK-M99J9589-C is a two pack material and has only
4、 to be applied afteraddition of polyisocyanate hardener SK-M99J9610-A.2. APPLICATIONThe material will be mainly applied by pneumatic or airless spraying,mainly on smaller areas and on various substrates where high stone peckresistance is required.3. REQUIREMENTS3.1 COMPOSITION3.1.1 VehicleSK-M99J958
5、9-A: Waterborne synthetic resinsSK-M99J9589-C: Polyester with hydroxyl groups, capable ofreaction with polyisocyanate3.1.2 Mixing Ratio with SK-M99J9610-A(SK-M99J8589-C only)As specified by the vendor, preferably 3:1 (by weight).3.1.3 Pot Life, min 10 h/20 C(SK-M99J9589-C only withhardener SK-M99J96
6、10-A)NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 2 of 7 3.1.4 PigmentInert pigments and fillers to provide the desired color. Theuse of non-inert pigments or fillers, e.g. zinc oxide, zincsulfide, calciu
7、m carbonate is not permitted.3.2 PHYSICAL PROPERTIES3.2.1 Non-Volatile(FLTM EU-BI 2-1)According to approved initial sample report +/- 1 %.3.2.2 Density(FLTM EU-BI 2-2)According to approved initial sample report +/- 0.05 %.3.2.3 Package Viscosity (= application viscosity)(FLTM EU-BI 11-1)According to
8、 approved initial sample report +/- 10 s (ifthixotropic within acceptable tolerances).3.2.4 Flash PointThe flash point shall conform to the safety regulationsapplicable to the plant and/or country where the materialshall be used.3.2.5 Shelf StabilityDuring a storage of 3 months at room temperature,
9、thematerial as received shall not gel or liver upon standing andmust be free from settling which cannot be dispersed bynormal agitation. The viscosity of the material shall notincrease in excess of 20 seconds when tested according toFLTM EU-BI 2-3.3.3 PREPARATION OF TEST PANELS3.3.1 SubstrateUse tes
10、t panels prepared in accordance with SK-M99J9587-A,sections 3.3.4.1. (Version A) and 3.3.4.2 (Version B). Inthe center of one half of the test panel clean an area about20 mm diameter to bare metal or electrocoat as required,using a knife, rotating wire brush and sanding paper. Finalsanding should be
11、 with 360 grit paper and the edge of thecleaned ares should be feathered to expose the variouslayers.NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 3 of 7 3.3.2 Preparation of Test Panels3.3.2.1 Version AUs
12、e test panels prepared in accordance withSK-M99J9587-A, section 3.3.4.1 (Version A) andclean an area to bare metal as described in 3.3.1.Sand the half of the test panel with simulateddamaged area to improve the adhesion of the repairmaterial. Use 360 grit paper.Apply the following materials to the d
13、amaged andsurrounding areas and to about one half of the testpanel in such a manner as to achieve a neat repair.Avoid overspray as much as possible.Unavoidable overspray should be removed by approvedprocesses, e.g. using a clean cloth saturated withsolvent as for SK-M99J9589-A demineralized water.Us
14、e 360 grit sanding paper to obtain a smoothtransition between the damaged and thesurrounding area. The final enamel coat should bepolished if necessary.Spray one coat of approximately 10 - 15 micrometredry film thickness of repair primer SK-M6J9566-A,flash off 3 minutes and bake 10 minutes at 130 Cm
15、etal temperature.Spray SK-M99J9589-A/C in sufficient dry filmthickness, flash off for 3 minutes and bake 10minutes at 130 C metal temperature.After cooling to room temperature spray repairprimer S-M6J57-A or SK-M6J9565-A as in use in theplant concerned in a dry film thickness of about 10- 15 microme
16、ter, and flash off for 1 minute.Spray current production enamel, white wet-on-wetwith a/m repair primer according to enamel materialspecification and bake according to same (10minutes at 130 C metal temperature).3.3.2.2 Version BProceed according to section 3.3.2.1, Version A,but with the following
17、exceptions.NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 4 of 7 Use repair primer SK-M6J9566-A and air dry 20minutes at room temperature (20 - 25 C). BakeSK-M99J9589-A 10 minutes at 88 C metal temperature.
18、Delete application of repair primer wet-on-wetenamel. Spray current production enamel, white,according to material specification and bake10 minutes at 100 C metal temperature.3.3.2.3 Version CProceed according to section 3.3.2.1, Version A,but with the following exceptions:Clean an area to electroco
19、at primer as described in3.3.1. Delete first application of repair primerSK-M6J9566-A.3.3.2.4. Version DProceed according to section 3.3.2.2, Version B,but with the following exception:Clean an area to electrocoat primer as described in3.3.1. Delete application of repair primerSK-M6J9566-A.3.3.2.5 V
20、ersion EProceed according to section 3.3.2.1, Version A,but with the following exceptions and test panelsprepared according to SK-M99J9587-A, section3.3.4.2, (Version B).Clean an area to electrocoat primer as described in3.3.1. Delete all applications of repair primer.Instead of current production e
21、namel, white applysynthetic baking enamel SK-M21J9550-A black mattXSC-373 according to material specification andbake 10 minutes at 130 C metal temperature.3.3.2.6 Version FProceed according to 3.3.2.5, Version E, but withthe following exception. Apply catalysedSK-M21J9550-A black matt XSC-373 and b
22、ake 10minutes at 100 C metal temperature. NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 5 of 7 3.3.2.7 Version GApply the material in a dry film thickness of 50 -60 micrometre on degreased Ford Standard Te
23、stPanels UMA 18001 and air dry at room temperature.The material shall be tack free within 1 hour.Curing within 24 hours.3.4 AGEINGPanels shall be aged 16 hours at 45 C or 72 hours at room temperatureprior to testing.3.5 APPEARANCE3.5.1 Color Black matt or grey matt3.5.3 Surface Smooth, only a minimu
24、m of orangepeel is permitted3.6 FILM PROPERTIES3.6.1 Dry Film Thickness(FLTM EU-BI 17-1)As high as necessary for repair (approx 100 micrometre).3.6.2 Adhesion No chipping(FLTM EU-BI 6-1, Method C)3.6.3 Plasticizer MigrationPlasticizer (if any) must not migrate into the enamel coat.Any color take cha
25、nge, tackiness or softening of the enamelcoat are not acceptable.3.7 RESISTANCE PROPERTIES3.7.1 Water Resistance 240 h(FLTM EU-BI 4-1)No blistering, flaking, strong permanent softening or loss oftop coat gloss.24 hours after finishing the water immersion test adhesiontest according to section 3.6.2
26、shall be performed.No chipping permitted.3.7.2 Stone Chip Resistance Rating 0(FLTM EU-BI 57-2No perforation down to bare steel.NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 6 of 7 3.7.3. Florida Exposure(F
27、LTM EU-BI 60-1)Panels prepared according to section 3.3.2, Version A-F,shall be exposed in the Miami, Florida area for 6 months,0.09 radius (5 deg) facing south.Prior to examination exposed panels must be cleaned with soapsolution S-M1B4. After exposure panels shall exhibit neitherblistering, peelin
28、g, checking nor film breakdown due todefects caused by SK-M99J9589-A/C. Evidence of chalking isacceptable if in accordance with the initial sample on whichapproval was originally granted.3.7.4 Temperature Cycling TestTest panels prepared according to section 3.3.2 shall besubjected three times to th
29、e following cycle:3 h + 80 +/- 2 C1 h room temperature3 h - 40 +/- 2 C1 h room temperature16 h + 38 +/- 2 C, 98 +/- 2 % relative humidityAfter last cycle leave test panels at room temperature for 3to 4 hours prior to evaluation.No cracking or other surface deterioration caused by thestone peck resis
30、tant material.Adhesion must fulfill requirements of section 3.6.2.3.7.5 Chipping Resistance, max Rating 1(FLTM EU-BI 7-1)3.7.6 Salt Fog Resistance 240 h(FLTM EU-BI 3-1)No blistering and rust or loss of adhesion. Do not scribetest panels.3.8 SUBSTANCE CONTROLLegal, health, safety and environmental co
31、nstraints may apply to thematerials which are submitted for approval to this specification.Refer to Engineering Material Specification SK-M99P9999-A.NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NAENGINEERING MATERIAL SPECIFICATIONSK-M99J9589-A/CWP 3948-b Page 7 of 7 3.9
32、 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inall characteristics to the material upon which approval wasoriginally granted.Prior to making any change in the properties, composition,construction, color, processing or labeling of the materialoriginally app
33、roved under this specification, whether or not suchchanges affect the materials ability to meet the specificationrequirements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engin
34、eeringactivity. Test data, test samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.4
35、. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Materials Engineering activity. Suppliers desiring approvalof their materials shall first obtain an expression of interest from theaffected Purchasing, Design and Materials Engineering activity.
36、 Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test facility, demonstratingfull compliance with all the requirements of this specification (testresults,
37、 not nominal values), the material designation and code number, andtest specimens for Ford evaluation. Fords engineering approval of amaterial will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapproval, the material will be added to the Engineering Material ApprovedSource List.NOT TO BE USED FOR NEW DESIGN 201 N Status No replacement named N Benipal, NA
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