Navigating the Automotive Specifications for Aluminum AnodizingAACOA, Inc.

Aluminum Anodizing

*The Standard MakersGeneral MotorsFord Motor CompanyDaimlerChrysler CorporationJapanese Standards AssociationGerman StandardsEuropean Union Standards

Aluminum Anodizing

*General Motors - GM4472MCoating requirements dependent upon application Type:Type depends upon the following:Finish:Clear or ColorUse:Functional or DecorativeLocation:Exterior or Interior

Coating for each application type must pass some combination of the following tests:ADT, Weatherometer, Florida exposure, CASS, Coating Thickness, Coating Mass (Weight)

Aluminum Anodizing

*Ford Motor CompanySpecificationFinish, ApplicationWSB-M4P9-B1Clear, InteriorWSB-M4P9-B2Clear, ExteriorWSB-M4P10-B1Dyed, InteriorWSB-M4P11-B1Electrolytic color, Exterior

All specifications require the following tests:ADT, Weatherometer, Florida exposure, CASS, Coating Thickness, Coating Mass (Weight)

Aluminum Anodizing

*DaimlerChrysler CorporationSpecifications dictate performance and process

SpecificationFinish, ApplicationPS-1576Dyed, Interior/ExteriorPS-4905Clear, ExteriorPS-5385Clear, InteriorPS-6426Clear, Interior/ExteriorPS-7362Electrolytic color, Interior/Exterior

All specifications require the following tests:ADT, Coating thicknessSome specifications may require the following:Paint adhesion testing, UV light testing, or Gloss

Aluminum Anodizing

*Japanese Standard-JIS H 8601Specification outlines process parameters as opposed to dictating themCoatings identified as Classes based upon coating thickness:Interior parts - Classes AA5, AA6, or AA10Exterior parts - Classes AA15, AA20, AA25Testing requirements may include any of the following:UV testing, Coating thickness, ADT, Abrasion resistance, CASS, Crazing, Gloss, Coating mass

Aluminum Anodizing

*German Standard-DIN 17611Coating types - Class 10 and Class 20Class 10 - Interior, aridClass 20 - Exterior or Interior, humidSpecifies type of pretreatmentGround, brush, polish, etch, bright dipTesting requirements may include any of the following:Coating thickness, dye stain, admittance, ADT

Aluminum Anodizing

*European Standard-EN 12373Specification contains 19 partsPart 1 - Method of specifying anodizingParts 2-19 - Quality testing proceduresSpecifies the following finishes:Clear and Bright DipColor - Integral, Electrolytic, Dyed, Combination, InterferenceDecorative and/or ProtectiveSealing methods

Aluminum Anodizing

*Pretreatment specification similarto DIN 17611Coating thickness testing required; purchaser may require any combination of the following performance tests:Coating mass, Dye stain, Admittance, ADT (with and w/o acid pretreatment), UV light fastness, Abrasion resistance, Specular gloss, Reflectance, Crazing by deformation, Continuity, Electric breakdown potential, Pitting corrosion evaluationEuropean Standard-EN 12373

Aluminum Anodizing

*ADT Testing(W1-W2) x K x CT / (W1-W3) = Rating (Maximum of 6.0)

W1 = Weight of coupon (prior to testing)W2 = Weight after ASTM B680 (prior to ASTM B137)W3 = Weight after ASTM B137CT = Coating thickness (mils or microns)K = Constant

StandardKCTK x CT = ?General Motors7.8m7.8 x 25.4=198.12Ford and Chrysler200mils200 x 1.00=200.00

Japanese and European (including German) standards limit weight loss (W1-W2) to 1.935 mg/in2 max.

Aluminum Anodizing

*Standards/PPAP Websiteswww.autoweb.netwww.global.ihs.comwww.techsavvy.comstinet.dtic.milwww.dscc.dla.milwww.document-center.comwww.lib.washington.edu/engineering/standardswww.aiag.orgwww.sae.orgwww.techstreet.comwww.wssn.netwww.astm.org

Documentationfor a PPAPThe Production Part Approval Process

*Required DocumentsInitial Process StudyQualified Laboratory DocumentationProcess Flow DiagramProcess Control PlanProcess FMEADimensional ResultsMaterial, Performance Test ResultsMeasurement Systems Analysis Study Part Submission WarrantAppearance Approval Report

*Initial Process StudySPC charting and statistics for the following:Coating thicknessCoating weightADT ratingCharts include the following:X-BarRangeControlMoving average (subgroups with minimum of 4)Cpk

*Qualified Lab DocumentationQS/TS/ISO DocumentationRegistration certificationProcess control planLaboratory ScopeTests for which lab is qualified to performCertification StatementsResults from testing performed on products/samples (in-house or outsourced) Calibration recordsAny equipment used in quality assurance testing

*Refer to the HandoutsProcess Flow DiagramProcess Control PlanProcess FMEADimensional ResultsMaterial, Performance Test ResultsMeasurement Systems Analysis Study Part Submission WarrantAppearance Approval Report

Thank youto the Following

Aluminum Anodizers Council

AACOA, Inc.

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