1、Specification forClassification ofWeld-ThroughPaint PrimersAWS D3.9:2010An American National StandardAWS D3.9:2010An American National StandardApproved by theAmerican National Standards InstituteFebruary 3, 2010Specification for Classification of Weld-Through Paint Primers1st EditionPrepared by theA
2、merican Welding Society (AWS) D3 Committee on Welding in Marine ConstructionUnder the Direction of theAWS Technical Activities CommitteeApproved by theAWS Board of DirectorsAbstractThis specification prescribes the requirements for the classification of weld-through paint primers. The classification
3、 isbased on paint film thickness and welding procedure. Manufacturers may classify their products to different film thick-nesses or welding procedures if they provide the details of their tests.International Standard Book Number: 978-0-87171-771-9American Welding Society550 N.W. LeJeune Road, Miami,
4、 FL 33126 2010 by American Welding SocietyAll rights reservedPrinted in the United States of AmericaPhotocopy Rights. No portion of this standard may be reproduced, stored in a retrieval system, or transmitted in anyform, including mechanical, photocopying, recording, or otherwise, without the prior
5、 written permission of the copyrightowner.Authorization to photocopy items for internal, personal, or educational classroom use only or the internal, personal, or edu-cational classroom use only of specific clients is granted by the American Welding Society provided that the appropriatefee is paid t
6、o the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, Tel: (978) 750-8400; Internet:.AWS D3.9:2010iiStatement on the Use of American Welding Society StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and guides) of the AmericanWelding S
7、ociety (AWS) are voluntary consensus standards that have been developed in accordance with the rules of theAmerican National Standards Institute (ANSI). When AWS American National Standards are either incorporated in, ormade part of, documents that are included in federal or state laws and regulatio
8、ns, or the regulations of other governmen-tal bodies, their provisions carry the full legal authority of the statute. In such cases, any changes in those AWS standardsmust be approved by the governmental body having statutory jurisdiction before they can become a part of those laws andregulations. I
9、n all cases, these standards carry the full legal authority of the contract or other document that invokes theAWS standards. Where this contractual relationship exists, changes in or deviations from requirements of an AWS stan-dard must be by agreement between the contracting parties.AWS American Na
10、tional Standards are developed through a consensus standards development process that bringstogether volunteers representing varied viewpoints and interests to achieve consensus. While the AWS administers theprocess and establishes rules to promote fairness in the development of consensus, it does n
11、ot independently test, evalu-ate, or verify the accuracy of any information or the soundness of any judgments contained in its standards.AWS disclaims liability for any injury to persons or to property, or other damages of any nature whatsoever, whether spe-cial, indirect, consequential, or compensa
12、tory, directly or indirectly resulting from the publication, use of, or reliance onthis standard. AWS also makes no guarantee or warranty as to the accuracy or completeness of any information published herein.In issuing and making this standard available, AWS is neither undertaking to render profess
13、ional or other services for oron behalf of any person or entity, nor is AWS undertaking to perform any duty owed by any person or entity to someoneelse. Anyone using these documents should rely on his or her own independent judgment or, as appropriate, seek theadvice of a competent professional in d
14、etermining the exercise of reasonable care in any given circumstances. It isassumed that the use of this standard and its provisions are entrusted to appropriately qualified and competent personnel.This standard may be superseded by the issuance of new editions. Users should ensure that they have th
15、e latest edition.Publication of this standard does not authorize infringement of any patent or trade name. Users of this standard accept anyand all liabilities for infringement of any patent or trade name items. AWS disclaims liability for the infringement of anypatent or product trade name resultin
16、g from the use of this standard.Finally, the AWS does not monitor, police, or enforce compliance with this standard, nor does it have the power to do so.On occasion, text, tables, or figures are printed incorrectly, constituting errata. Such errata, when discovered, are postedon the AWS web page (ww
17、w.aws.org).Official interpretations of any of the technical requirements of this standard may only be obtained by sending a request, inwriting, to the appropriate technical committee. Such requests should be addressed to the American Welding Society,Attention: Managing Director, Technical Services D
18、ivision, 550 N.W. LeJeune Road, Miami, FL 33126 (see Annex B).With regard to technical inquiries made concerning AWS standards, oral opinions on AWS standards may be rendered.These opinions are offered solely as a convenience to users of this standard, and they do not constitute professional advice.
19、Such opinions represent only the personal opinions of the particular individuals giving them. These individuals do notspeak on behalf of AWS, nor do these oral opinions constitute official or unofficial opinions or interpretations of AWS. Inaddition, oral opinions are informal and should not be used
20、 as a substitute for an official interpretation.This standard is subject to revision at any time by the AWS D3 Committee on Welding in Marine Construction. It must bereviewed every five years, and if not revised, it must be either reaffirmed or withdrawn. Comments (recommendations, addi-tions, or de
21、letions) and any pertinent data that may be of use in improving this standard are required and should be addressedto AWS Headquarters. Such comments will receive careful consideration by the AWS D3 Committee on Welding in MarineConstruction and the author of the comments will be informed of the Comm
22、ittees response to the comments. Guests areinvited to attend all meetings of the AWS D3 Committee on Welding in Marine Construction to express their comments ver-bally. Procedures for appeal of an adverse decision concerning all such comments are provided in the Rules of Operation ofthe Technical Ac
23、tivities Committee. A copy of these Rules can be obtained from the American Welding Society, 550 N.W.LeJeune Road, Miami, FL 33126.AWS D3.9:2010iiiAWS D3.9:2010ivThis page is intentionally blankPersonnelAWS D3 Committee on Welding in Marine ConstructionM. Ludwig, Chair Fronius USAM. J. Sullivan, Vic
24、e Chair NASSCOS. A. Collins, 2ndVice Chair Maine Maritime AcademyB. C. McGrath, Secretary American Welding SocietyG. Baldree Keppel-AmFELST. W. Burns AlcoTech Wire CorporationG. M. Cain Oxylance CorporationC. B. Champney Nelson Stud WeldingD. Cottle DC FabricatorsB. H. Halverson Marinette Marine Cor
25、porationD. R. Haydock General Atomics ElectromagneticR. D. Holdsworth Management Systems TechnologyM. H. Huelskamp Bay LtdK. L. Johnson Todd Pacific ShipyardL. G. Kvidahl Northrop Grumman ShipbuildingH. W. Lehman BechtelJ. W. Mumaw Nelson Stud WeldingS. E. Pollard Machinists, IncorporatedT. Ulinski
26、Wolf RoboticsAdvisors to the AWS D3 Committee on Welding in Marine ConstructionT. Anderson ESABS. Ivanov ConsultantT. Iwata National Maritime Research InstituteA. W. Johnson A W Johnson 2. no cracks;3. no indication (porosity, slag, or other inclusion) larger than 3/32 in (2.4 mm);4. the sum of rele
27、vant porosity indications (larger than 1/32 in (0.8 mm) is less than 10% of the total length of theinspected weld (32 in (813 mm); and5. the sum of relevant porosity indications (larger than 1/32 in (0.8 mm) is less than 1/4 in (6 mm) in any measuredone-inch length of the weld.6. Classification6.1 T
28、he coating shall be classified as a weldable primer upon satisfactory completion of the testing described herein.6.2 The manufacturer may identify the product as conforming to one or more of the following classifications:1. A-12. A-23. A-34. A-45. A-56. A-67. B-18. B-29. B-310. B-411. B-512. B-6Wher
29、e the letter identifies the maximum primer thickness tested, as defined in Table 1, and the number identifies thewelding procedure used as shown in Annex A.For example, Classification A-1 indicates that the coating conforms to primer classification A-1 as per AWS D3.9 whentested with Brand XYZ elect
30、rode. The manufacturers report (see 7.1) includes the filler metal and flux trade name(s)used for testing. Filler metals and fluxes of other trade names may give different test results. Also, see 8.3.AWS D3.9:20104Table 1Primer Thickness ClassificationsCLASS THICKNESS mils (m)aA 0.51.0 (1225)B 1.01.
31、5 (2638)aThe primer thickness shall be the average value as measured in accordance with Clause 4.6.3 The coating manufacturer may also classify a product as X-Y, where X indicates a primer thickness different fromthose shown in Table 1 and Y indicates that an alternate welding procedure was used for
32、 testing. It is the responsibilityof the manufacturer to provide the details of these tests upon request of the buyer.7. Test Report7.1 The following items shall be included on the Manufacturers classification test report:1. Paint manufacturers name;2. Paint trade name;3. Date of manufacture of pain
33、t used for the test;4. Name of manufacturer and trade name of welding consumable used for certification testing.5. Date of classification test;6. Thickness of primer in classification test assembly calculated, as indicated in 4.5;7. Welding Procedure number in accordance with Annex A;8. Filler metal
34、 and flux (for submerged arc welding) trade name;9. Lowest hydrogen designator for which filler metal can be classified, as defined by the applicable AWS filler material specification;10. Welding travel speed for classification test;11. Actual weld size;12. Visual inspection results; and13. Fillet-w
35、eld-break test results.8. Certification8.1 By affixing the AWS classification designations and expiry date for the primer to the container of the weld-through-paint primer, the manufacturer certifies that the product meets the requirements of this specification.8.2 Certification to this standard wil
36、l extend for 12 months from the date of performance of the tests, as described inClause 4.8.3 The only testing requirements implicit in the certification are that the manufacturer has actually conducted the testsrequired by the specification on material that is representative of that being shipped a
37、nd that the material met therequirements of the specification. The representative material, in this case, is any production run of that classificationusing the same formulation. “Certification” is not to be construed to mean that tests of any kind were necessarilyconducted on samples of the specific
38、 material shipped.9. Renewal of Certification9.1 Renewal of certification may be obtained by performing the required tests before the expiration of the 12-monthcertification period.AWS D3.9:20105AWS D3.9:20106This page is intentionally blankAnnex A (Normative)Welding ProceduresThis annex is part of
39、AWS D3.9:2010, Specification for Classification of Weld-Through Paint Primers, and includes mandatory elements for use with this standard.WELDING PROCEDURE 1PROCESS: Shielded Metal Arc (SMAW)FILLER MATERIAL: AWS A5.1/A5.1M, E7018DIAMETER: 1/8 in (3.2 mm)SHIELDING GAS: Not applicableAMPERAGE: 120130
40、AVOLTAGE: 2224 V (suggested)POLARITY: direct current electrode positive (dcep)PREHEAT: None permittedNOMINAL FILLET WELD SIZE: 1/4 in (6 mm)AWS D3.9:20107WELDING PROCEDURE 2PROCESS: Flux Cored Arc (FCAW)FILLER MATERIAL: AWS A5.20/A5.20M, E71T-1CDIAMETER: 0.052 in (1.3 mm)SHIELDING GAS: CO2AWS A5.32/
41、A5.32M, SG-CFlow Rate: 45 CFH (21 liters/minute) minimumAMPERAGE: 155170 A VOLTAGE: 2628 VPOLARITY: direct current electrode positive (dcep)PREHEAT: None permittedNOMINAL FILLET WELD SIZE: 1/4 in (6 mm)WELDING PROCEDURE 3PROCESS: Flux Cored Arc (FCAW)FILLER MATERIAL: AWS A5.20/A5.20M, E71T-1MDIAMETE
42、R: 0.045 in (1.1 mm)SHIELDING GAS: 75% Argon/25% CO2AWS A5.32/A5.32M, SG-AC-25Flow Rate: 45 CFH (21 liters/minute) minimumAMPERAGE: 140160 AVOLTAGE: 2628 VPOLARITY: direct current electrode positive (dcep)PREHEAT: None permittedNOMINAL FILLET WELD SIZE: 1/4 in (6 mm)AWS D3.9:20108WELDING PROCEDURE 4
43、PROCESS: Flux Cored Arc (FCAW) MechanizedFILLER MATERIAL: AWS A5.20/A5.20M, E71T-1MDIAMETER: 1/16 in (1.6 mm)SHIELDING GAS: 75% Argon/25% CO2AWS A5.32/A5.32M, SG-AC-25Flow Rate: 45 CFH (21 liters/minute) minimumAMPERAGE: 250280 AVOLTAGE: 2527 VPOLARITY: direct current electrode positive (dcep)PREHEA
44、T: None permittedNOMINAL FILLET WELD SIZE: 1/4 in (6 mm)WELDING PROCEDURE 5PROCESS: Gas Metal Arc (GMAW)FILLER MATERIAL: AWS A5.18/A5.18M, ER70S-3DIAMETER: 0.045 in (1.1 mm)SHIELDING GAS: 95% Argon/5% CO2AWS A5.32/A5.32M, SG-AC-5Flow Rate: 35 CFH (17 liters/minute) minimumAMPERAGE: 190220 AVOLTAGE:
45、2426 VPOLARITY: direct current electrode positive (dcep)PREHEAT: None permittedNOMINAL FILLET WELD SIZE: 1/4 in (6 mm)AWS D3.9:20109WELDING PROCEDURE 6PROCESS: Submerged Arc (SAW)FILLER MATERIAL: AWS A5.17/A5.17M, EM12K with a neutral flux (flux manufacturers name and trade nameshall be included in
46、test report).DIAMETER: 1/8 in (3.2 mm)SHIELDING GAS: Not applicableAMPERAGE: 375425 AVOLTAGE: 2527 VPOLARITY: direct current electrode positive (dcep)PREHEAT: None permittedNOMINAL FILLET WELD SIZE: 5/16 in (8 mm)AWS D3.9:201010Annex B (Informative)Guidelines for the Preparation of Technical Inquiri
47、esThis annex is not part of AWS D3.9:2010, Specification for Classification of Weld-Through Paint Primers, but isincluded for informational purposes only.B1. IntroductionThe American Welding Society (AWS) Board of Directors has adopted a policy whereby all official interpretations ofAWS standards ar
48、e handled in a formal manner. Under this policy, all interpretations are made by the committee that isresponsible for the standard. Official communication concerning an interpretation is directed through the AWS staffmember who works with that committee. The policy requires that all requests for an
49、interpretation be submitted in writ-ing. Such requests will be handled as expeditiously as possible, but due to the complexity of the work and the proceduresthat must be followed, some interpretations may require considerable time.B2. ProcedureAll inquiries shall be directed to: Managing Director Technical Services DivisionAmerican Welding Society550 N.W. LeJeune RoadMiami, FL 33126All inquiries shall contain the name, address, and affiliation of the inquirer, and they shall provide enough informationfor the committee to understand the point of concern in the inquir
