1、PrimerZinc MolybdateRATIONALEThis document has been reaffirmed to comply with the SAE 5-year Review policy.1. SCOPE:1.1 Type: This specification covers a zinc molybdate primer in the form of a liquid.1.2 Application: This product has been used typically as a protective coating on metals, but usage i
2、s not limited to such applications.2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order form a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue
3、 is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2471 Anodic Treatment of
4、 Aluminum Alloys, Sulfuric Acid Process, Undyed CoatingAMS 4037 Aluminum Alloy Sheet and Plate, 4.4Cu - 1.5Mg - 0.60Mn (2024; -T3 Flat Sheet, -T351 Plate), Solution Heat TreatedAEROSPACE MATERIAL SPECIFICATIONAMS 3117Issued 2002-01 Reaffirmed 2011-04 SAE Technical Standards Board Rules provide that:
5、 “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE
6、reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or t
7、ransmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org
8、 SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3117 AMS 3117 SAE AMS 3117- 2 -2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19248-2959 or www.ast
9、m.org.ASTM D 185 Coarse Particles in Pigments, Pastes, and PaintsASTM D 562 Consistency of Paints Using the Stormer ViscometerASTM D 563 Phthalic Anhydride Content of Alkyd Resins and Resin SolutionsASTM D 1364 Water in Volatile Solvents (Fischer Reagent Titration Method)ASTM D 1475 Density of Liqui
10、d Coatings, Ink and Related ProductsASTM D 3363 Film Hardness by Pencil TestASTM D 3960 Volatile Organic Compound (VOC) Content of Paints and Related Coatings3. TECHNICAL REQUIREMENTS: 3.1 Composition: 3.1.1 Primer (by weight): Nonvolatile portion shall be 76 to 80.8%; volatile portion shall be 19.2
11、 to 24 percent.3.1.1.1 Nonvolatile Components: Phthalic anhydride portion of the nonvolatile vehicle/carrier shall be 23 to 30%, determined in accordance with ASTM D 563; pigment portion shall be 54 to 58% of the primer as a whole.3.1.1.1.1 The resin component shall be free of rosin and rosin deriva
12、tives.3.1.1.1.2 Pigment: Shall consist of not less than 5% molybdenum in the form of zinc molybdate, and 14.5 to 16% titanium dioxide, and shall be lead and chromium free. 3.1.1.2 Volatile Component: The composition of the volatile component shall be mineral spirits and the VOC content of the primer
13、 at application shall not exceed 340 grams per liter (2.8 lbs/gal) determined in accordance with ASTM D 3960.3.2 Properties: Primer shall conform to the following requirements:3.2.1 Color: Shall be light yellow, characteristic of zinc molybdate.3.2.2 Density: Shall be 12.6 to 13.6 pounds per gallon
14、(1.5 to 1.6 grams/mL) determined in accordance with ASTM D 1475.3.2.3 Coarse Particles: Not more than 0.5% by weight, calculated on the basis of total solids, shall be retained on a No. 325 (45 m) sieve, determined in accordance with ASTM D 185.3.2.4 Water Content: Shall not exceed 2% by weight, det
15、ermined in accordance with ASTM D 1364.AMS 3117 SAE AMS 3117- 3 -3.2.5 Viscosity: Shall be 75 to 91 Krebs Units, determined in with ASTM D 562.3.2.6 Storage Stability: Primer, in a three-quarters full, closed container which has been conditioned at 125 F 2 (52 C 1) for one month, shall not cause cor
16、rosion of the container nor shall the primer exhibit skinning or off-odor.3.2.7 Skinning and Livering: Shall be absent in a quarter-filled, closed container after standing for 24 hours 0.2 at room temperature.3.3 Air-Drying Film Properties: 3.3.1 Drying Time: A 0.001 to 0.002 inch (25 to 51 m) thick
17、 wet film shall air dry to the touch in not more than six hours at 77 F 3.5 (25 C 2) and a relative humidity not higher than 50 percent. The coating shall be suitable for recoating within eight hours.3.3.2 Water Resistance: A wet film 0.001 to 0.002 inch (25 to 51 m) shall be sprayed on a flat panel
18、 prepared as in 4.5.1 and cured at room temperature for a maximum of 48 hours. Immerse approximately half of the panel in room temperature distilled water for 24 hours. Upon removal from the water, the immersed film shall show no wrinkling or blistering, and shall have a minimum pencil hardness of 4
19、H determined in accordance with ASTM D 3363. After air drying the panel for 24 hours, the film pencil hardness shall be 4H minimum, determined in accordance with ASTM D 3363.3.3.3 Baked Film Properties: 3.3.3.1 Flexibility: A 0.001 to 0.002 inch (25 to 51 m) wet film applied to a flat panel as in 4.
20、5.1 shall be allowed to air dry for two hours, then baked for 24 hours at 212 to 221 F (100 to 105 C). The film shall not crack when the panel is bent through an angle of 180 degrees around a mandrel having a diameter of 1/8 inch (3.2 mm).3.4 Quality: Primer, as received by purchaser, shall be of un
21、iform consistency and free from bubbles, grit, rough particles, floating or caked pigments, and ingredients of respiratory toxicity under normal conditions of use. Component ingredients shall be intimately mixed and processed as required to produce a product which is stable and not subject to abnorm
22、al change with age in sealed containers.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of primer shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any co
23、nfirmatory testing deemed necessary to ensure that the primer conforms to the requirements of this specification.AMS 3117 SAE AMS 3117- 4 -4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1), color (3.2.1), density (3.2.2), viscosity (3.2.5), drying time (3.3.1), and water resista
24、nce (3.3.2) are acceptance tests and shall be performed on each lot.4.2.2 Preproduction Tests: All technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of primer to a purchaser, when a change in ingredients and/or processing requires reapproval as
25、 in 4.4, and when purchaser deems confirmatory testing to be required.4.3 Sampling and Testing: Shall be as follows:4.3.1 For Acceptance Tests: Sufficient primer shall be taken at random from each lot to perform all required tests. The number of determinations for each requirement shall be as specif
26、ied in the applicable test procedure or, if not specified therein, not less than three.4.3.1.1 Drying time test shall be determined on the panels prepared for other tests.4.3.1.2 A lot shall be all primer made from the same batches of ingredients in a continuous series of operations and presented fo
27、r vendors inspection at one time.4.3.2 For Preproduction Tests: Sample quantity shall be selected at the discretion of the processor, unless otherwise specified.4.4 Approval: Vendor shall assign a unique name, alpha numeric identification or other identification traceable to a specific set of ingred
28、ients, methods of manufacture and control procedures. If there is any change to ingredients, properties of ingredients, methods of manufacture or control procedures, the identifying name or alpha numeric identification shall also be changed. Production primer shall not be shipped prior to receipt of
29、 reapproval.4.5 Test Methods: 4.5.1 Panel Preparation: Panels 0.062 x 2 x 4 inches (1.6 x 51 x 102 mm) shall be fabricated from AMS 4037 aluminum alloy and anodized in accordance with AMS 2471. Panels shall be completely coated with primer to the specified thickness.4.6 Reports: The vendor of primer
30、 shall furnish with each shipment a report showing the results of tests to determine conformance to specified requirements and stating that the primer conforms to the other technical requirements. This report shall include the purchase order number, lot number, AMS 3117, formula number, and quantity
31、.AMS 3117 SAE AMS 3117- 5 -4.7 Resampling and Retesting: If any specimen used in the above tests fails to meet the specified requirements, disposition of the primer may be based on the results of testing three additional samples for each original nonconforming sample. Failure of any retest sample to
32、 meet the specified requirements shall be cause for rejection of the primer represented. Results of all tests shall be reported.5. PREPARATION FOR DELIVERY: 5.1 Packaging and Identification: 5.1.1 Primer shall be supplied in metal containers with sealed openings. Interior surfaces of containers shal
33、l be free from corrosion and, if treated to prevent corrosion, shall be coated with material which will be unaffected by the contents.5.1.2 A lot may be packaged in small quantities and delivered under basic lot approval provided lot identification is maintained.5.1.3 Each container shall be legibly
34、 marked with not less than AMS 3117, manufacturers identification, formula number, lot number, date of manufacture, quantity, directions for use, and precautions for storage.5.1.4 Containers of primer shall be prepared for shipment in accordance with commercial practice and in compliance with applic
35、able rules and regulations pertaining to the handling, packaging, and transportation of the primer to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENT: A vendor shall mention this specification number in all quotations and when acknowledging purchase orders.7. REJECTIONS: Primer not con
36、forming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES:8.1 A change bar ( l ) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous is
37、sue of this specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.8.2 Dimensions and proper
38、ties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsuis temperatures are shown as the approximate equivalents of the primary units and are presented only for information.AMS 3117 SAE AMS 3117- 6 -8.3 Procurement documents should specify not less than the following:AMS 3117Size of containers desiredQuantity of primer desired.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “B”
