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 revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2014 SAE InternationalAll rights reserved. No part of this publi
3、cation may 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 (out
4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS6365KAEROSPACE MATERIAL SPECIFICATIONAMS6365 REV. KIssued 1942-06Reaffirmed 2006-02Revised
5、 2014-07Superseding AMS6365JSteel Tubing, Seamless0.95Cr - 0.20Mo (0.33 - 0.38C) (SAE 4135)Normalized or Stress Relieved(Composition similar to UNS G41350)RATIONALEAMS6365K results from a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers an aircraft-quality,
6、 low-alloy steel in the form of seamless tubing.1.2 ApplicationThis tubing has been used typically for thin wall-thickness sections where minimum tensile strength up to 160 ksi (1103 MPa) is required and where parts may be welded during fabrication, but usage is not limited to such applications.2. A
7、PPLICABLE DOCUMENTSThe 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 unless a specific document issue is specified. When the referenced docum
8、ent has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA
9、), www.sae.org.AMS2253 Tolerances, Carbon and Alloy Steel TubingAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Cleanliness, Aircraft Quality Steel, Magnetic Particle Inspection ProcedureAMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wro
10、ught Products and Forging StockSAE INTERNATIONAL AMS6365K Page 2 of 6AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat Resistant Steels and Alloys, Sheet, Strip, Plate and Aircraft Tubing2.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C70
11、0, West Conshohocken, PA 19428-2959,Tel: 610-832-9585, www.astm.org.ASTM A 370 Mechanical Testing of Steel ProductsASTM E 112 Determining Average Grain SizeASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought IronASTM E 384 Knoop and Vicker
12、s Hardness of MaterialsASTM E 1444 Magnetic Particle Testing3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 350, by spectrochemical methods, or by other analytical methods acceptable to
13、purchaser:TABLE 1 - COMPOSITIONElement min maxCarbon 0.33 0.38Manganese 0.70 0.90Silicon 0.15 0.35Phosphorus - 0.025Sulfur - 0.025Chromium 0.80 1.10Molybdenum 0.15 0.25Nickel - 0.25Copper - 0.353.1.1 Check AnalysisComposition variations shall meet the applicable requirements of AMS2259.3.2 Condition
14、Cold finished and either normalized and tempered, stress relieved, or otherwise heat treated.3.3 PropertiesTubing shall conform to the following requirements; hardness and tensile testing shall be performed in accordance with ASTM A 370:3.3.1 Tensile PropertiesShall be as shown in Table 2.SAE INTERN
15、ATIONAL AMS6365K Page 3 of 6TABLE 2A - MINIMUM MECHANICAL PROPERTIES, INCH/POUND UNITSNominal ODInchNominal WallThicknessInchTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches%Full TubeElongation in2 Inches%StripUp to 0.500, excl Up to 0.188, incl 100 85 8 -Up to 0.500, excl Over
16、 0.188 95 80 10 -0.500 and over Up to 0.188, incl 100 85 12 70.500 and over Over 0.188 95 80 15 10TABLE 2B - MINIMUM MECHANICAL PROPERTIES, SI UNITSNominal ODMillimetersNominal WallThicknessMillimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm%Full TubeElongation in50.8 mm
17、StripUp to 12.70, excl Up to 4.78, incl 689 586 8 -Up to 12.70, excl Over 4.78 655 552 10 -12.70 and over Up to 4.78, incl 689 586 12 712.70 and over Over 4.78 655 552 15 103.3.2 Average Grain SizeShall be ASTM No. 5 or finer, determined in accordance with ASTM E 112.3.3.3 Decarburization3.3.3.1 Tu
18、bing ordered ground, turned, or polished shall be free from decarburization on the ground, turned, or polished surfaces. Decarburization on tubing ID shall not exceed the maximum depth specified in Table 3.3.3.3.2 Allowable decarburization of pierced billets, of tubing for redrawing, or of tubing or
19、dered to specified microstructural requirements shall be as agreed upon by purchaser and vendor.3.3.3.3 Tubing to which 3.3.3.1 or 3.3.3.2 is not applicable shall be free from complete decarburization. Partial decarburization shall not exceed the limits shown in Table 3.TABLE 3A - MAXIMUM DECARBURIZ
20、ATION LIMITS, INCH/POUND UNITSNominal Wall Thicness (T)InchDepth of Partial DecarburizationInchIDDepth of Partial DecarburizationInchODDepth of Partial DecarburizationInchID+ODUp to 0.040, incl 0.18T 0.18T 0.25TOver 0.040 to 0.050, incl 0.009 0.009 0.012Over 0.050 to 0.070, incl 0.010 0.010 0.014Ove
21、r 0.070 to 0.080, incl 0.012 0.012 0.016Over 0.080 to 0.090, incl 0.014 0.014 0.018Over 0.090 to 0.100, incl 0.015 0.015 0.020Over 0.100 to 0.150, incl 0.017 0.017 0.022Over 0.150 to 0.200, incl 0.020 0.020 0.026SAE INTERNATIONAL AMS6365K Page 4 of 6TABLE 3B - MAXIMUM DECARBURIZATION LIMITS, SI UNIT
22、SNominal Wall Thickness (T)MillimetersDepth of PartialDecarburization MillimetersIDDepth of PartialDecarburizationMillimetersODDepth of PartialDecarburizationMillimetersID+ODUp to 1.02, incl 0.18T 0.18T 0.25TOver 1.02 to 1.27, incl 0.23 0.23 0.30Over 1.27 to 1.78, incl 0.25 0.25 0.36Over 1.78 to 2.0
23、3, incl 0.30 0.30 0.41Over 2.03 to 2.29, incl 0.36 0.36 0.46Over 2.29 to 2.54, incl 0.38 0.38 0.51Over 2.54 to 3.81, incl 0.43 0.43 0.56Over 3.81 to 5.08, incl 0.51 0.51 0.663.3.3.4 Decarburization shall be measured by the metallographic method or by a traverse method using microhardness testing in
24、accordance with ASTM E 384. The microhardness method shall be conducted on a hardened but untempered specimen protected during heat treatment to prevent changes in surface carbon content. Depth of decarburization, when measured by a microhardness method, is defined as the perpendicular distance from
25、 the surface to the depth under that surface where there is no further increase in hardness. Such measurements shall be far enough away from any adjacent surface to be uninfluenced by any decarburization on the adjacent surface. In case of dispute, the depth of decarburization determined using the m
26、icrohardness traverse method shall govern.3.3.3.4.1 When determining the depth of decarburization, it is permissible to disregard local areas provided the decarburization of such areas does not exceed the above limits by more than 0.005 inch (0.13 mm) and the width is 0.065 inch (1.62 mm) or less.3.
27、4 QualityTubing, as received by purchaser, shall be uniform in quality and condition and shall have a finish conforming to the best practice for high quality aircraft tubing. It shall be smooth and free from scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, and other imperfec
28、tions detrimental to usage of the tubing. Surface imperfections such as handling marks, straightening marks, light mandrel and die marks, shallow pits, and scale pattern will not be considered injurious if the imperfections are removable within the tolerances specified for wall thickness, but remova
29、l of such imperfections is not required.3.4.1 Steel shall be aircraft quality conforming to AMS2301.3.4.2 When specified, the tubing, either with or without machining of the surface, shall be subjected to magnetic particle inspection in accordance with ASTM E 1444. Standards for acceptance shall be
30、as agreed upon by purchaser and vendor.3.5 TolerancesShall conform to all applicable requirements of AMS2253.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of tubing shall supply all samples for vendors tests and shall be responsible for the performance of all required te
31、sts. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the tubing conforms to specified requirements. 4.2 Classification of TestsAll technical requirements are acceptance tests and shall be performed on each heat or lot as applicable.SAE I
32、NTERNATIONAL AMS6365K Page 5 of 64.3 Sampling and TestingShall be in accordance with AMS2370.4.4 ReportsThe producer shall furnish, with each shipment, a report showing the producer identity and country where the metal was melted (i.e., final melt in the case of metal processed by multiple melting o
33、perations), results of tests for chemical composition and frequency-severity cleanliness rating of each heat, and for average grain size and tensile properties of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number,
34、 heat and lot numbers, AMS6365K, size, and quantity. 4.5 Resampling and RetestingShall be in accordance with AMS2370.5. PREPARATION FOR DELIVERY5.1 SizesExcept when exact lengths or multiples of exact lengths are ordered, straight tubing will be acceptable in mill lengths of 6 to 20 feet (1.8 to 6.1
35、 m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m).5.2 IdentificationShall be in accordance with AMS2807.5.3 Protective TreatmentTubing shall be protected from corrosion prior to shipment.5.4 PackagingTubing shall be prepared for shipment in accordance
36、with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the tubing to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall mention this specification number and its revision letter in all quo
37、tations and when acknowledging purchase orders.7. REJECTIONSTubing 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 areas where techn
38、ical revisions, not editorial changes, have 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
39、 contain editorial changes only.8.2 Terms used in AMS are clarified in ARP1917.SAE INTERNATIONAL AMS6365K Page 6 of 68.3 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 appr
40、oximate equivalents of the primary units and are presented only for information.8.4 Purchase documents should specify not less than the following:AMS6365KSize of tubing desiredQuantity of tubing desired.Standards for acceptance when magnetic particle inspection is specified (See 3.4.2).8.5 Similar SpecificationsMIL-T-6735PREPARED BY AMS COMMITTEE “E”
