1、_SAE Technical Standards Board Rules provide that: “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 theref
2、rom, is the sole responsibility of the user.” SAE 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 2010 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, 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 US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS1625CAEROSPACEMATERIALSPECIFICATIONAMS1625 REV. C Issued 1978-01 Reaffirmed 2000-06 Revised
5、2010-12 Superseding AMS1625B Desmutter, Aluminum PowderedRATIONALEAMS1625C is a Five Year Review and update of this specification. 1. SCOPE This specification covers powdered materials, solutions of which are used to remove smut from aluminum surfaces treated with etch-type oxidation and corrosion r
6、emovers. 1.1 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibili
7、ty of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase orde
8、r forms 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 is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of
9、 that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS4037 Aluminum Alloy Sheet and Plate, 4.4Cu - 1.5Mg - 0.60Mn, (2024; -T3 Flat S
10、heet, -T351 Plate), Solution Heat Treated AMS-QQ-A-200 Aluminum Alloy, Bar, Rod, Shapes, Structural Shapes, Tube, and Wire, Extruded: General Specification for SAE AMS1625C Page 2 of 52.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA
11、 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM D 1193 Reagent Water ASTM F 484 Stress Crazing of Acrylic Plastics in Contact with Liquid or Semi-Liquid Compounds ASTM F 502 Effects of Cleaning and Chemical Maintenance Materials on Painted Aircraft Surfaces ASTM F 2111 Measuring Intergranular Atta
12、ck or End Grain Pitting on Metals Caused by Aircraft Chemical Processes 2.3 U.S. Government Publications Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/.MIL-
13、P-25690 Plastic, Sheets and Parts, Modified Acrylic Base, Monolithic, Crack Propagation Resistant 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall be optional with the manufacturer but shall yield a freely-flowing, powdered product conforming to the requirements of 3.2. 3.2 Properties Desmutter shall
14、 conform to the following requirements; tests shall be conducted in accordance with specified test methods on a solution of the product at the lowest use dilution recommended by the manufacturer: 3.2.1 Smut Removing Ability The desmutter shall remove smut from aluminum alloy surfaces as well as, or
15、better than, the control formula, determined in accordance with 3.2.1.1. 3.2.1.1 Clean six AMS4037 aluminum alloy specimens of convenient size by wiping with a clean cloth wet with methyl ethyl ketone or other suitable solvent. Immerse the specimens in 500 mL of 10% sodium hydroxide (NaOH) solution
16、at 68 to 95 F (20 to 35 C) for 2 minutes 0.5. The 10% NaOH solution shall not be agitated during the immersion period. Remove specimens and immediately flush away residual NaOH solution with flowing tap water. Immediately immerse three of the six specimens in the desmutter solution maintained at the
17、 midpoint of the manufacturers recommended operating temperature range. When manufacturer makes no recommendations on temperature, the desmutter solution shall be maintained at 75 F 5 (24 C 3). Immerse the other three specimens in the control solution of 3.2.1.1.1. The test solution and the control
18、solution shall not be agitated during the immersion period. After 60 seconds 15, remove the specimens from the solutions. Flush surfaces of the specimens with flowing water followed by rinsing with flowing ASTM D 1193, Type IV, water. Allow specimens to air dry. Visually compare the degree of smut r
19、emoval from the specimens immersed in the desmutter solution with the specimens immersed in the control solution. 3.2.1.1.1 Desmutter Control Solution Shall be a solution containing 10 grams 0.5 of 90% by weight sodium bisulfate (NaHSO4) and 10% by weight chromium trioxide (Cr03) per liter of soluti
20、on dissolved in ASTM D 1193, Type IV, water and operated at 24 C 3 (75 F 5). SAE AMS1625C Page 3 of 53.2.2 Effect on Painted Surfaces The desmutter shall neither decrease the hardness of the paint film by more than two pencil hardness levels nor shall it produce streaking, discoloration, or blisteri
21、ng of the paint film determined in accordance with ASTM F 502. 3.2.3 Effect on Plastics The desmutter shall not craze, stain, or discolor MIL-P-25690 stretched acrylic plastic, determined in accordance with ASTM F 484. 3.2.4 Etch Rate on Aluminum Alloy The desmutter, tested in accordance with 3.2.4.
22、1, shall not remove more than 10 mg from any test specimen. 3.2.4.1 Clean three AMS4037 aluminum alloy specimens, approximately 0.040 x 1 x 2 inches (1.02 x 25 x 51 mm), by wiping with a clean cloth wet with methyl ethyl ketone or other suitable solvent. Allow specimens to air dry. Weigh each specim
23、en to the nearest 0.1 milligram. Immerse specimens for 30 minutes 0.25 in 500 mL of desmutter solution maintained at the highest temperature of the manufacturers recommended operating range. When manufacturer makes no recommendation on temperature, the desmutter solution shall be maintained at 35 C
24、3 (95 F 5). Test solution shall not be agitated during the immersion period. Remove specimens, immediately flush residual desmutter solution from the specimen surfaces with flowing water, followed by rinsing with flowing ASTM D 1193, Type IV, water. Allow to air dry. Reweigh specimens and calculate
25、weight loss of each specimen. 3.2.5 Intergranular and Pitting Attack on Aluminum The desmutter shall not cause end grain pitting in excess of 0.001 inch (25.4 microns) or intergranular attack in excess of 0.0002 inch (5.1 microns) depth of AMS-QQ-A-200 aluminum alloy 7075-T6511 or 7178-T6511 when te
26、sted in accordance with ASTM F 2111 and 3.2.5.1. 3.2.5.1 Clean the ASTM F 2111 aluminum alloy specimens by wiping with a clean cloth wet with methyl ethyl ketone or other suitable solvent. Allow specimens to air dry. Immerse specimens for 30 minutes 0.25 in 500 mL of desmutter solution maintained at
27、 the highest temperature of the manufacturers recommended operating range. When manufacturer makes no recommendation on temperature, the desmutter solution shall be maintained at 35 C 3 (95 F 5). Test solution shall not be agitated during the immersion period. Remove specimens, immediately flush res
28、idual desmutter solution from the specimen surfaces with flowing water, followed by rinsing with flowing ASTM D 1193, Type IV, water. Allow to air dry. Examine specimens for pitting and intergranular attack in accordance with ASTM F 2111. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspec
29、tion The vendor of the desmutter shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Results of such tests shall be reported to the purchaser as required by 4.5. Purchaser reserves the right to sample and to perform any confirmatory testing
30、deemed necessary to ensure that the desmutter conforms to specified requirements.4.2 Classification of Tests All technical requirements of this specification are classified as acceptance tests and as preproduction tests and shall be performed prior to or on the initial shipment of desmutter to a pur
31、chaser, on each lot, when a change in material and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. SAE AMS1625C Page 4 of 54.3 Sampling Sufficient desmutter shall be taken at random from each lot to perform all required tests. The number o
32、f determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less than three. 4.3.1 A lot shall be all desmutter manufactured at one time from one group of raw materials under the same fixed conditions and presented for vendors inspec
33、tion at one time. 4.3.2 When a statistical sampling plan and acceptance quality level (AQL) have been agreed upon by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.3 and the report of 4.5 shall state that such plan was used. 4.4 Approval 4.4.1 Sample
34、 desmutter shall be approved by purchaser before desmutter for production use is supplied, unless such approval be waived by purchaser. Results of tests on production desmutter shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedur
35、es, and methods of inspection on production desmutter which are essentially the same as those used on the approved sample desmutter. If necessary to make any change in ingredients or in manufacturing procedures, vendor shall submit for reapproval a statement of the proposed changes in ingredients an
36、d/or processing and, when requested, sample desmutter. Production desmutter made by the revised procedure shall not be shipped prior to receipt of reapproval. 4.5 Reports The vendor of the desmutter shall furnish with each shipment a report showing the results of tests to determine conformance to th
37、e technical requirements of this specification. This report shall include the purchase order number, AMS1625C, manufacturers identification, lot number, and quantity. 4.6 Resampling and Retesting If any sample used in the above tests fails to meet the specified requirements, disposition of the desmu
38、tter may be based on the results of testing three additional samples for each original nonconforming sample. Failure of any retest sample to meet the specified requirements shall be cause for rejection of the desmutter represented and no additional testing shall be permitted. Results of all tests sh
39、all be reported. 5. PREPARATION FOR DELIVERY 5.1 Packaging and Identification 5.1.1 Desmutter shall be packaged in containers of a type and size agreed upon by purchaser and vendor. 5.1.2 Each container of desmutter shall be legibly marked with not less than AMS1625C, purchase order number, manufact
40、urers identification, lot number, and quantity. 5.1.3 Containers of desmutter shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the desmutter to ensure carrier acc
41、eptance and safe delivery. Packaging shall conform to carrier rules and regulations applicable to the mode of transportation. SAE AMS1625C Page 5 of 56. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7
42、. REJECTIONS Desmutter not conforming 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
43、 been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Terms
44、used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS1625CType and size of containers desired Quantity of desmutter desired. PREPARED BY AMS COMMITTEE “J“ (AMCM)
