1、AEROSPACEMATERIAL SPECIFICATIONAMS1741Issued 2007-07Reaffirmed 2015-04Compound, Alkaline DegreaserAircraft Turbine Engine ComponentsRATIONALEAMS1741 has been reaffirmed to comply with the SAE five-year review policy._SAE Technical Standards Board Rules provide that: “This report is published by SAE
2、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 reviews each technical report at le
3、ast 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 system or transmitted, in any form o
4、r 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: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.s
5、ae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS17411. SCOPE 1.1 Form This specification covers an alkaline degreaser compound in the form of a liquid concentrate or a water-soluble powder for dilution with water. 1.2 App
6、lication This product has been used typically for removing oils, greases, or other soils from aircraft turbine engine parts by immersion in a solution of the compound at elevated temperature, but usage is not limited to such applications. These compounds are unsuitable for cleaning aluminum or magne
7、sium parts. Restrictions for cleaning titanium parts may be imposed by the engine manufacturer. 1.3 Classification Compounds conforming to this specification are classified as follows: Type 1 - Liquid concentrate Type 2 - Water-soluble powder 1.3.1 Type 1 shall be supplied unless Type 2 is ordered.
8、1.4 Precautions Degreaser compound may contain chemicals which, if improperly used, could be hazardous to the health and safety of operators. Protective clothing including eye shields, suitable gloves, and apron should be worn when preparing and using compound. Tanks shall be prepared and operated u
9、nder conditions of adequate fume extraction and with due regard to the safety recommendations of the manufacturer of the compound together with local workshop safety regulations. 1.5 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in thi
10、s 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 precautionary m
11、easures 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 document
12、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 15096-00
13、01, 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 1942
14、8-2959, 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 945 Stress Corrosion of Titanium Alloys by Aircraft Engine Cleaning Materials 3. TECHNICAL REQUIREMENTS 3.1 Composition The co
15、mposition of the compound shall be optional with the manufacturer except that, when prepared for use, the solution shall be alkaline. When prepared in accordance with manufacturers instructions, the compound shall form a homogeneous solution, with no solid sediment at room temperature and shall meet
16、 the applicable requirements of 3.2. 3.2 Properties The 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 and temperature recommended by the manufacturer. 3.2.1 Stock Loss Test
17、 panels of alloys or electrodeposits shall not incur stock 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 11. Stock loss figures shall be reported for all mate
18、rials specified in ARP1755, Category 11. Vendor shall indicate where compound is not recommended for particular alloys or coatings. 3.2.2 Surface Attack Test panels and bars used for the stock loss test of 3.2.1 shall neither exhibit pitting corrosion nor show visual evidence of degradation, when ex
19、amined at 50X magnification under good oblique surface lighting conditions. SAE INTERNATIONAL AMS1741 Page 2 of 5_ 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 a
20、ccordance with 3.2.3.1 on the alloys shown in Table 1. TABLE 1 - HOT CORROSION PARAMETERS Panel Material Bake Temperature F Bake Temperature CAMS 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, co
21、ated with MIL-C-81751, Type I, Class 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 3.2.3.1 Degrease two 1 0.5 0.05 inch (25 13 1.3 mm) panels of each alloy using absorbent pap
22、er 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). Cross-s
23、ection, 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 at the required concentrations, shall not cau
24、se stress-corrosion cracking of titanium alloys, determined in accordance with ASTM F 945, Method A. 3.2.5 Biodegradability Vendor shall supply evidence that surfactants used in the compound are at least 90% biodegradable, determined either in accordance with ASTM D 2667 where relevant to surfactant
25、 type or by alternative methods appropriate to surfactant type acceptable to purchaser. 3.2.5.1 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 ad
26、vice on the means for disposal. 3.2.6 Storage Stability Compound, stored at 77 F 9 (25 C 5) for one year from date of receipt by purchaser, shall show no visual evidence of deterioration and shall meet all other technical requirements of this specification. 3.2.7 Performance The compound, prepared a
27、nd used in accordance with manufacturers instructions, shall be capable of removing oils, greases, and other soils from all required parts. Compounds which meet all other technical requirements of this specification shall be service tested in an approved engine overhaul facility for not less than si
28、x months, during which time at least ten turbofan or turbojet engines, or equivalent, shall be processed with satisfactory results before approval for service use is granted by the applicable engine manufacturer. SAE INTERNATIONAL AMS1741 Page 3 of 5_ 3.3 Quality The liquid compound, as received by
29、purchaser, shall be homogeneous, and free from solid particles, separation, and any foreign material detrimental to usage of the compound. If compound is supplied in powder form, it shall be free flowing, free from lumping caused by moisture absorption, and free from foreign materials detrimental to
30、 its usage. 4. QUALITY ASSURANCE 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 nec
31、essary to ensure that the cleaner conforms to specified requirements. 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 and/or pro
32、cessing 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 fixed condit
33、ions, 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 approval be waive
34、d 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 sample. If n
35、ecessary 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 prior to recei
36、pt 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 technical requ
37、irements. This report shall include the purchase order number, lot number, AMS 1741, manufacturers identification, and quantity. 4.5.1 The vendor of cleaner shall supply a certification of compliance of biodegradability requirements (See 3.2.5). 4.6 Resampling and Retesting If any sample used in the
38、 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 cleaner repres
39、ented. Results of all tests shall be reported. SAE INTERNATIONAL AMS1741 Page 4 of 5_ 5. PREPARATION FOR DELIVERY 5.1 Identification Each container of compound shall be legibly marked with not less than AMS 1741, purchase order number, lot number, manufacturers identification, and quantity. 5.2 Pack
40、aging Compound shall be packaged in containers of a type and size acceptable to purchaser. 5.2.1 The compound may be packaged in small quantities and delivered under the basic lot approval provided lot identification is maintained. 5.2.2 Containers of compound shall be prepared for shipment in accor
41、dance with 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. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter
42、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 convenience of the user in locating ar
43、eas 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 used in original publications,
44、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 are shown as the approximate eq
45、uivalents of the primary units and are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS 1741 Quantity of product desired Type of compound (liquid or powder) desired Type and size of containers desired. PREPARED BY AMS COMMITTEE “J“ (AMCM) SAE INTERNATIONAL AMS1741 Page 5 of 5_
