1、AEROSPACE MATERIAL SPECIFICATIONAMS6361 REV. FIssued 1942-06Reaffirmed 2009-06Revised 2014-06Superseding AMS6361ESteel Tubing, Seamless0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130)125 ksi (862 MPa) Tensile Strength(Composition similar to UNS G41300)RATIONALEAMS6361F results from a Five Year Review and u
2、pdate of this specification.1. SCOPE1.1 FormThis specification covers an aircraft-quality, low-alloy steel in the form of round, seamless tubing having a wall thickness not greater than 0.188 inch (4.78 mm).1.2 ApplicationThis tubing has been typically used in thin-walled sections where a minimum te
3、nsile strength of 125 ksi (862 MPa) is required, but usage is not limited to such applications.2. APPLICABLE 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 subsequ
4、ent 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 that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive
5、, Warrendale, PA 15096-0001, Tel: 877-606-7323 (outside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2253 Tolerances, Carbon and Alloy Steel TubingAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft Quality, Magnetic Particl
6、e Inspection ProcedureAMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging Stock_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
7、 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 least every five years at which time it may be revised, reaffirmed, stabilized, or canc
8、elled. SAE invites your written comments and suggestions.Copyright 2014 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, withou
9、t 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.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visit
10、http:/www.sae.org/technical/standards/AMS6361FSAE INTERNATIONAL AMS6361F 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 Driv
11、e, P.O. Box C700, 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
12、Knoop and Vickers 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 method
13、s acceptable to purchaser.TABLE 1 - COMPOSITIONElement min maxCarbon 0.28 0.33Manganese 0.40 0.60Silicon 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 AMS22
14、59.3.2 ConditionHardened by quenching from a temperature within the range 1500 to 1600 F (816 to 871 C) and tempered to meet the requirements of 3.4.1.3.3 FabricationTubing shall be produced by a seamless process. Any surface finishing operation applied to remove objectionable pits and surface blemi
15、shes shall be performed prior to final heat treatment. A light polish to improve surface appearance may be employed after final heat treatment.3.4 PropertiesTubing shall conform to the following requirements; tensile testing shall be performed in accordance with ASTM A 370:SAE INTERNATIONAL AMS6361F
16、 Page 3 of 63.4.1 Tensile PropertiesShall be as shown in Table 2.TABLE 2 - MINIMUM TENSILE PROPERTIESProperty ValueTensile Strength 125.0 ksi (862 MPa)Yield Strength at 0.2% Offset 100.0 ksi (689 MPa)Elongation in 2 inches (50.8 mm), Full Elongation in 2 inches (50.8mm), Tube Strip12%7%3.4.1.1 Mecha
17、nical property requirements for product outside the size range covered by Table 2 (See 1.1) shall be agreed upon between purchaser and producer.3.4.2 Average Grain SizeShall be ASTM No. 5 or finer, determined in accordance with ASTM E 112.3.4.3 Decarburization3.4.3.1 Tubing ordered ground, turned, o
18、r 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 3.3.4.3.2 Allowable decarburization of pierced billets, of tubing for redrawing, or of tubing ordered to specified microstruct
19、ural requirements shall be as agreed upon by purchaser and vendor.3.4.3.3 Tubing to which 3.4.3.1 or 3.4.3.2 is not applicable shall be free from complete decarburization. Partial decarburization shall be not greater than shown in Table 3.TABLE 3A - MAXIMUM DECARBURIZATION, INCH/POUND UNITSNominal W
20、allThickness (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 0.014Over 0.070 to 0.080, incl 0.012 0.012 0.01
21、6Over 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 0.188, incl 0.020 0.020 0.026SAE INTERNATIONAL AMS6361F Page 4 of 6TABLE 3B - MAXIMUM DECARBURIZATION, SI UNITSNominal WallThickness MillimetersDepth of Par
22、tialDecarburization MillimeterIDDepth of PartialDecarburizationMillimeterODDepth of PartialDecarburizationMillimeterID+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 2.03, incl 0.30 0.30 0.41Over 2.03 to 2.29, incl 0.36 0.
23、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 4.78, incl 0.51 0.51 0.663.4.3.4 Decarburization shall be measured by the microscopic method or by a traverse method using microhardness testing in accordance with ASTM E 384. The microhardness method sha
24、ll 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 the microhardness method, is defined as the perpendicular distance from the surface to the depth under that surface where the
25、re is no further increase in hardness. Such measurements shall be far enough away from any adjacent surface to be uninfluenced by decarburization on the adjacent surface. In case of dispute, the depth of decarburization determined using the microhardness traverse method shall govern.3.4.3.4.1 When d
26、etermining 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 (1.65 mm) or less.3.5 QualityTubing, as received by purchaser, shall be unifor
27、m 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 heavy scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, and other imperfections detrimental to usage of the tubing. Surface im
28、perfections 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 removal of such imperfections is not required.3.5.1 Steel
29、shall be aircraft quality conforming to AMS2301.3.5.2 When specified, the tubing, either with or without machining of the surfaces, shall be subjected to magnetic particle inspection in accordance with ASTM E 1444. Standards for acceptance shall be as agreed upon by purchaser and vendor.3.6 Toleranc
30、esShall 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 tests. Purchaser reserves the right to sample and to
31、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 INTERNATIONAL AMS6361F Page 5 of 64.3 Sampling and T
32、estingShall be in accordance with AMS2370.4.4 Reports4.4.1 The producer of the tubing 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 operations), the results of tests
33、for composition and frequency-severity cleanliness rating of each heat and for tensile properties and average grain size of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS6361F, size,
34、and quantity. 4.4.2 When the product size is outside the size range covered by Table 2, the report shall contain a statement to that effect.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
35、ordered, straight tubing will be acceptable in mill lengths of 6 to 20 feet (1.8 to 6.1 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 corros
36、ion prior to shipment.5.4 PackagingTubing 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 tubing to ensure carrier acceptance and safe delivery.6. ACKNOWLEDG
37、MENTA vendor shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSTubing not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) locat
38、ed 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 issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revis
39、ions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.8.2 Terms used in AMS are clarified in ARP1917.SAE INTERNATIONAL AMS6361F Page 6 of 68.3 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; di
40、mensions 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:AMS6361FSize of tubing desiredQuantity of tubing desiredStandards for acceptance when magnetic particle inspection is specified (See 3.5.2)Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the size range listed in 1.1.8.5 Similar SpecificationsAMS-T-6736/MIL-T-6736PREPARED BY AMS COMMITTEE “E”
