1、AEROSPACEMATERIAL SPECIFICATIONAMS1742Issued 2007-07Reaffirmed 2015-04Compound, Alkaline Solvent CleanerAircraft Turbine Engine ComponentsRoom Temperature ApplicationRATIONALEAMS1742 has been reaffirmed to comply with the SAE five-year review policy._SAE Technical Standards Board Rules provide that:
2、 “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 r
3、eviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2015 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in a retrieval sy
4、stem 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 USA)Fax: 724-776-0790Email: CustomerServices
5、ae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS17421. SCOPE 1.1 Form This specification covers a solvent cleaning compound in the form of a liquid. 1.2 Application This product has been
6、used typically for removal of oils, greases, and other soils from aircraft turbine engine parts by wiping the parts at room temperature, but usage is not limited to such application. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in
7、 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 responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautiona
8、ry 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 order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a docum
9、ent 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 that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 1509
10、6-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. ARP1755 Effect of Cleaning Agents on Aircraft Engine Materials, Stock Loss Test Method 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19
11、428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 1568 Sampling and Chemical Analysis of Alkylbenzene Sulfonates ASTM D 2667 Biodegradability of Alkylbenzene Sulfonates ASTM F 519 Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments ASTM F 945 Stress Corrosion o
12、f Titanium Alloys by Aircraft Engine Cleaning Materials 3. REQUIREMENTS 3.1 Composition Shall be optional with the manufacturer but, when prepared in accordance with manufacturers instructions, shall form a homogeneous solution, with no solid sediment at room temperature, meeting the requirements of
13、 3.2. 3.2 Properties Compound shall conform to the following requirements; tests shall be performed in accordance with specified test methods on the product supplied at the maximum concentration recommended by manufacturer. 3.2.1 Stock Loss Test panels of alloys or electrodeposits shall not incur st
14、ock loss exceeding 0.000025 inch (0.635 m) per surface and plasma deposited coatings shall not incur stock loss exceeding 0.0001 inch (2.5 m) when tested in accordance with ARP1755, Category 12. Stock loss figures shall be reported for all materials specified in ARP1755, Category 12. Vendor shall in
15、dicate where remover is not recommended for particular alloys or surface coatings. 3.2.2 Surface Attack Test panels and bars used for the stock loss test of 3.2.1 shall neither exhibit pitting nor show visual evidence of degradation, when examined at 50X magnification under good oblique surface ligh
16、ting conditions. 3.2.3 Hot Corrosion Cleaner shall neither produce visual corrosion nor localized microscopic corrosion where the depth of attack is greater than 0.0003 inch (0.0075 mm), determined in accordance with 3.2.3.1 on the alloys shown in Table 1. TABLE 1 - HOT CORROSION PARAMETERS Panel Ma
17、terial Bake Temperature F Bake Temperature CAMS 4025 Aluminum Alloy 399 204 AMS 4037 Aluminum Alloy 399 204 AMS 4911 Titanium Alloy 900 482 AMS 4916 Titanium Alloy 900 482 AMS 5040 Carbon Steel, nickel- cadmium plated as in AMS 2416 849 454 AMS 5040 Carbon Steel, coated with MIL-C-81751, Type I, Cla
18、ss 4 750 399 AMS 5504 Stainless Steel 1051 566 AMS 5510 Stainless Steel 1600 871 AMS 5536 Nickel Alloy 1600 871 AMS 5544 Nickel Alloy 1600 871 AMS 5608 Cobalt Alloy 1600 871 SAE INTERNATIONAL AMS1742 Page 2 of 5_ 3.2.3.1 Degrease two 1 0.5 0.05 inch (25 13 1.3 mm) panels of each alloy using absorben
19、t paper tissue and wiping with a suitable solvent and then with isopropanol. After drying at ambient temperature for 60 minutes 5, immerse one panel of each type in cleaning compound for 15 seconds, and air dry. Bake both panels of each type for 8 hours 0.1 at the indicated temperature 9 F (5 C). Cr
20、oss-section, mount, and metallographically examine both the treated and control panels of each type at 250X magnification. Oxidation of the control can be deducted from test specimen corrosion. 3.2.4 Stress-Corrosion of Titanium Alloys The compound, when used according to manufacturers instructions,
21、 shall not cause stress-corrosion cracking of titanium alloys, determined in accordance with ASTM F 945, Method A. 3.2.5 Hydrogen Embrittlement Compound shall be non-embrittling, determined in accordance with ASTM F 519, Type 1a, 1c, or 2a specimens, but using non-electroplated test specimens. Type
22、1a and 1c specimens shall be loaded to 45% of the predetermined notch fracture strength, and Type 2a specimens loaded to 80% of the yield strength. The entire 2a stressed specimen, or just the notched area of the 1a and 1c stressed specimen, shall be immersed continuously in the solution under test
23、for 150 hours at a temperature between 68-86 F (20-30 C ). 3.2.6 Biodegradability Vendor shall supply evidence that surfactants used in the compound shall be at least 90% biodegradable, determined either in accordance with ASTM D 2667 where relevant to surfactant type or by alternative methods appro
24、priate to surfactant type acceptable to purchaser. 3.2.6.1 Evidence of surfactant biodegradability does not guarantee that the compound may be discharged in either concentrated or diluted form into public waterways or sewerage systems; manufacturers shall give advice on the means for disposal. 3.2.7
25、 Storage Stability Compound, stored at 77 F 9 (25 C 5) for one year, shall show no visual evidence of deterioration and shall meet all other technical requirements of this specification. 3.2.8 Performance The compound, prepared and used in accordance with manufacturers instructions, shall remove oil
26、s and greases from parts. Compounds which meet all other technical requirements shall be tested for cleaning performance in an approved engine overhaul facility for not less than six months, during which time at least ten turbofan or turbojet engines, or equivalent, shall be processed with satisfact
27、ory results before approval for service use is granted by the applicable engine manufacturer. 3.3 Quality The compound, as received by purchaser, shall be clear, homogeneous, and free from solid particles, separation, and from foreign materials detrimental to usage of the compound. 4. QUALITY ASSURA
28、NCE PROVISIONS 4.1 Responsibility for Inspection The vendor of cleaner 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 confirmatory testing deemed necessary to ensure that the cle
29、aner conforms to specified requirements. SAE INTERNATIONAL AMS1742 Page 3 of 5_ 4.2 Classification of Tests 4.2.1 Preproduction Tests All technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of cleaner to a purchaser, when a change in ingredients
30、and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing Shall be in accordance with ASTM D 1568; a lot shall be all cleaner produced in a single production run, from the same batches of raw materials, under the same fi
31、xed conditions, and presented for vendors inspection at one time. 4.3.1 A statistical sampling plan, acceptable to purchaser, may be used in lieu of sampling as in 4.3. 4.4 Approval 4.4.1 Sample cleaner shall be approved by purchaser before cleaner for production use is supplied, unless such approva
32、l be waived by purchaser. Results of tests on production cleaner shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedures, and inspection methods on production cleaner which are essentially the same as those used on the approved sa
33、mple. 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 and/or processing and, when requested, sample cleaner. Production cleaner made by the revised procedure shall not be shipped prio
34、r to receipt of reapproval. 4.5 Reports The vendor of cleaner shall furnish with each shipment a report showing the results of tests to determine conformance to the acceptance test requirements and, when performed, to the periodic test requirements and stating that cleaner conforms to the other tech
35、nical requirements. This report shall include the purchase order number, lot number, AMS 1742, manufacturers identification, and quantity. 4.5.1 The vendor of cleaner shall supply a certification of compliance of biodegradability requirements (See 3.2.61.2). 4.6 Resampling and Retesting If any sampl
36、e used in the above tests fails to meet the specified requirements, disposition of the cleaner 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 c
37、leaner represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Packaging and Identification 5.1.1 Compound shall be packaged in containers of a type and size acceptable to purchaser. 5.1.2 A lot of compound may be packaged in small quantities and delivered under the basi
38、c lot approval provided lot identification is maintained. 5.1.3 Each container of compound shall be legibly marked with not less than AMS 1742, purchase order number, lot number, manufacturers identification, and quantity. 5.1.4 Containers of compound shall be prepared for shipment in accordance wit
39、h commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the compound to ensure carrier acceptance and safe delivery. SAE INTERNATIONAL AMS1742 Page 4 of 5_ 6. ACKNOWLEDGMENT A vendor shall mention this specification n
40、umber and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Compound not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) located in the left margin is for the convenie
41、nce of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revision. Change bars and (R) are not u
42、sed in original publications, nor in specifications that contain editorial changes only. 8.2 Terms 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 a
43、re 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: AMS 1742 Type and size of containers desired Quantity of compound desired. PREPARED BY AMS COMMITTEE “J“ (AMCM) SAE INTERNATIONAL AMS1742 Page 5 of 5_
