HN 1664_2004
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M A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TOTHE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TOCONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID.1. INTRODUCTIONThis specification covers the required paint and painted part performance ofbasecoat/clearcoat enamel paint systems used on exterior plastic parts finished by Holden Ltd or by suppliers.This specification covers the following classes of exterior plastic parts based on exposure requirements of the basecoat/clearcoat enamel finish:Class I - Parts subjected to full sun exposure on horizontal areas of the body such as Decklid, Roof and Bonnet.Class ll - Parts subjected to full sun exposure but normally in vertical positions of the body e.g. side mirrors, door handles, door belt mouldings, bumper fascias and rocker skirts.Class lll - Parts partially subject to sun exposure e.g. wheel trim covers.2. APPLICATION 2.1Paint system for general use on exterior plastic parts.2.2 Plastic substrates used for testing and approval to this specification shall be as specified on the part drawing.3. GENERAL REQUIREMENTS 3.1As supplied paint / painted components(i) Colour to approved Design Staff master.(ii)At approval; no change to paint materials or process used shall be made without approval from the Holden Materials Engineering Department.3.2 Full System ApprovalAny change to either the paint system or substrate will require system approval to be granted. All tests in section 4.2 should be completed. --`,,,,,,-`-`,,`,,`,`,,`---M A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TOTHE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TOCONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID.3. GENERAL REQUIREMENTS (continued)3.3Colour Durability – for colour submissionsAll colours used must be approved by satisfactory performance in Tests 1, 2, 3, 4 and 12 of Section 4.2 below. Tests may be performed on painted test panels or suitable sections cut from painted parts.3.4 Painted Part – PPAP ApprovalParts painted with an approved paint system and paint colour must conform to Tests 4, 5, 6, 7, 8 and 12 of Section 4.2 (See Notes 3 and 4). Tests may be performed on painted test panels when suitable sections cut from painted parts are not available.3.5 Painted Part, Minimum In-Process TestingThe process used (included preparation and cleaning) to paint components should be such that the part conforms to all requirements of this specification at all times. Testing to ensure conformance of the paint application process shall be the responsibility of the supplier.4. TESTS 4.1Test ProgramTest panels of minimum nominal dimensions of 100 x 100 x 2.5 mm from theplastic material shown on the part drawing are painted to the intended method and tested as shown in Section 4.2.Top coat colours equivalent to current body colour in a metallic and non-metallic colour are to be used for paint system type approval and must complete each test.Approval of painted parts and approval of new colour durability are detailed in Section 3.Age all test panels for 72 hours ambient before testing unless otherwise specified.M A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.4. TESTS (continued)4.2Tests RequiredTESTDETAILSRESULTS1. Natural Exposure HN 0283 & HN 0270Class I - 5 Years Class II - 3 Years Class III- 2 YearsNo cracking, crazing ordelamination of clearcoat. Rating 8 minimum for subjectivecategories Change in measured 20o gloss to be 20 units maximum2. Accelerated Exposure HN 0276 & HN 0270 Class I - 1250 hrs QUV Class II - 1250 hrs QUV Class III - 1000 hrs QUV(Note 1).No cracking, crazing ordelamination of clearcoat Rating 8 minimum for subjectivecategories. Change in measured 20o gloss to be 20 units maximum3. Adhesion after Natural Exposure and Water Soak HN 0278 & HN 0279Test Panels exposed from Tests 1 above. Cross hatch adhesion before 24 hrs. water soak. Tape adhesion test on original hatched area after 15 mins. recovery (All Classes).Rating 8 minimum for adhesion. No delamination of clearcoat4. Humidity and Adhesion HN 0256, HN 0279 & HN 0270Cross hatch adhesion before 144 hrs. humidity. Tape adhesion test on original hatched area after 15 mins recovery. (All Classes).Rating 8 minimum for adhesion and subjective appearance & changes. --`,,,,,,-`-`,,`,,`,`,,`---M A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.4. TESTS (continued)4.2 Tests Required (continued)TESTDETAILSRESULTS5. Gravelometer SAE J400 Test at -10 °C Test Chip resistance at room temperature and -18°C. (All Classes). (Note 2).Rating 5B minimum for all panels.6. Petrol Resistance HN 0268 Method A Cross scribe panels withcarbide tipped scribe tool. Drip 40-60 ml of petrol for 2 hours. (All Classes). (Note 3).Paint wrinkling from scribe to be no more than 3 mm total width. Tape test scribe after 24 hrs.ambient recovery. Paint adhesion loss to be 4 mm maximum.7. Impact Resistance ASTM D3763 Test initial impact resistanceTest 5 unpainted and 5 painted panels at -10° C as follows: Impact LocationPainted panels - painted side: Unpainted panels - show side Impact Speed: 6.7 m/s Impact Probe: 12.7 mm dia Clamping Plate:76.2 mm inner diameter (All Classes). (Note 4).Impact resistance of the painted test panels must be at least 80% of the impact resistance of identical but unpainted test panels8. Chemical & Petrol Spot Resistance HN 0275Include unleaded petrol spot with chemicals specified(All Classes).Rating 8 minimum for all chemicals and petrol spot.--`,,,,,,-`-`,,`,,`,`,,`---M A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.4. TESTS (continued)4.2Tests Required (continued)TESTDETAILSRESULTS9. Etch & Distortion Resistance HN 0259 & HN 0260(All Classes).Report minimum etch & distortion temperatures10. Gasohol Resistance HN 0274 Method B(Note 5)After total cycle, test panels are left to dry off. The painted surface shall show no loss of gloss, wrinkling, blistering or other objectionable paint defects. Colour change rating - 8 as per the subjective rating scale. Assess film softening using the thumbnail 5 minutes after test and 24 hours recovery. There is to be full recovery of the film after 24 hours recovery period.11. Adequacy of Cure HN 0280Use MEK solvent and 50 double rubs (All Classes) Minimum rating – 0. No appearance change permissible.12. Adhesion after Accelerated Exposure and Water Soak HN 0278 & HN 0279Test panels exposed from Tests 2 above. Cross hatch adhesion before 24 hrs water soak. Tape adhesion test on original hatched area after 15 mins. recovery(All Classes).Rating 8 minimum for adhesion. No delamination of clearcoatM A T E R I A L S P E C I F I C A T I O NREVISION :August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.4. TESTS (continued)4.2Tests Required (continued)TESTDETAILSRESULTS13. Mandrel BendMandrel bend at room temperature (23°C). The mandrel diameter shall be 4 times the thickness of the substrate.(All Classes). (Note 6).There shall be no loss of paint adhesion or cracking after mandrel bend.NOTE 1:Using UVB-313 Lamps.NOTE 2:Gravelometer Test SAE J400 is mandatory only for painted parts that are deemed to be in a 'chipping prone' area on the vehicle body.NOTE 3:Petrol resistance Test HN 0268 Method A is mandatory only for painted parts that are deemed to be in a 'petrol-drip prone' area on the vehicle body.NOTE 4:Impact Resistance Test ASTM D3763 is mandatory only for painted parts that are deemed to be in an 'impact prone' area on the vehicle body.NOTE 5:Gasohol resistance Test HN 0274 Method B is mandatory only for painted parts that are deemed to be in a ‘gasohol-drip prone’ area on the vehicle body.NOTE 6:Mandrel Bend is mandatory only for painted parts with flexible substrates that have a flex modulus of 800Mpa or less.--`,,,,,,-`-`,,`,,`,`,,`---A.C.N. 006 893 232Holden Limited Engineering DepartmentM A T E R I A L S P E C I F I C A T I O NNUMBER SHEET RELEASE REVISION ::::HN 1664 7 of 8January, 1986 August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.5. APPROVAL, INSPECTION AND REJECTION Refer HN 1000, Clauses A, C and G (Plant Trial).6. HAZARDOUS MATERIALS(Applies only to paint supplied to Holden Ltd)Refer HN 1000, Clause H.7. RESTRICTED CHEMICALS Refer HN 1000, Clause J. 8. REFERENCESHN 0283 HN 0270 HN 0276 HN 0278 HN 0279HN 0256 SAE J400 HN 0268 ASTM D3763 HN 0275HN 0259 HN 0260 HN 0274ASTM D3763HN 1000GMW30599. REVISIONSMay, 1993 - Section 4.2.2. QUV hours changed from 2000 Hrs.May, 1997 - Section 3.1. Reference to approved source deleted. Added new sub-clause (ii).- Section 3.2 Paint Process clause deleted.- Section 3.4 Minimum in process testing clause modified - Section 4.1 Clause modified.- Section 4.2 Tests 1-4,6 & 8 Test methods reference no. changed. - Section 4.2 Test 2 Requirements changed.- Section 4.2 Test 3 Adhesion test was after water soak exp. only. - Section 4.2 Test 4 Adhesion test was after humidity exp. only. - Section 4.2 Test 5 Chip resist. after acc. exp. was 500 hrs QUV and test was conducted at room temp.- Section 4.2 Test 6 Petrol resistance paint adhesion loss was 5 mm maximum.- Section 4.2 Test 7 Impact resistance method was HN 0212 - Section 4.2 Test 9 Etch & distortion resistance added - Section 4.2 Note reference to the test methods changed- Section 5 Approved submission deleted--`,,,,,,-`-`,,`,,`,`,,`---Holden Limited Engineering DepartmentM A T E R I A L S P E C I F I C A T I O NNUMBER SHEET RELEASE REVISION ::::HN 1664 8 of 8January, 1986 August, 2004NAME: BASECOAT / CLEARCOAT ENAMEL FOR EXTERIOR PLASTIC PARTSTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TO THE COMPANY’S PRODUCTS THE RECIPIENT IS RESPONSIBLE TO CONFIRMTHE DOCUMENT ISSUE DATE IS STILL VALID.9. REVISIONS (continued)July, 1997- Section 4.2 Test 2 Amendment of QUV exposure for Class 1.November, 1997- Section 4.2 Test 6 Petrol Resistance. Amendment to test method reference- Section 4.2 Test 10 and Note 5 added.April, 2000 - Section 4.2 Test 11 Adequacy of cure HN0280 added.September, 2000 - Section 3.0 Define testing requirements for full system, colour and PPAP submissionsJune, 2001 - Section 3.4 Reword section to remove ambiguity with requirements of PPAP part testingFebruary, 2003- Clause 3.1(ii); reference made to the Holden Materials Engineering Department.- Clause 3.3. Added reference to test 3.- Clause 3.4. Deleted reference to test 3 and added reference to test 12.- Revised Clause 4.2.3. Deleted reference to test 2.- Added Clause 4.2.12. Adhesion after Accelerated Exposure and Water SoakAugust, 2004- Revised section 1 (INTRODUCTION). Addition of parts (bumper fascias and rocker skirts) in Class II. - Revised Clause 3.3 (Colour Durability – for coloursubmissions). Included references to test 4 and 12 of section 4.2 (Tests Required).- Revised Clause 3.4 (Painted Part – PPAP Approval). Included references to test 5 of section 4.2 (Tests Required). - Revised Clause 3.5 (Painted Part, Minimum In-Process Testing). Added reference to preparation and cleaning. - Revised Clause 4.2.5 (Gravelometer). Deleted reference to Clause 4.2.2 (Accelerated Exposure) and added requirement for testing at -18°C.- Added Clause 4.2.13 (Mandrel Bend) and Note 6 in section 4 (TESTS).Prepared by: P. Nguyen--`,,,,,,-`-`,,`,,`,`,,`---。
