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 there
2、from, 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 2015 SAE International All rights reserved. No part of this p
3、ublication 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: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS5050K AEROSPACE MATERIAL SPECIFICATION AMS5050 REV. K Issued 1939-12 Revised 2
5、001-08 Reaffirmed 2015-12 Superseding AMS5050J Steel Tubing, Seamless 0.15 Carbon, Maximum Annealed (Composition similar to UNS G10100) RATIONALE AMS5050K has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1 Form: This specification covers a low-carbon steel in the form o
6、f seamless tubing.1.2 Application: This tubing has been used typically for oil lines and other parts requiring high-quality tubing suitable for severe forming and for welding or brazing, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS: The issue of the following documents in e
7、ffect 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 document has been canceled and no superseding document has been s
8、pecified, the last published issue of that document shall apply.2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.AMS 2253 Tolerances, Carbon and Alloy Steel TubingMAM 2253 Tolerances, Metric, Carbon and Alloy Steel TubingAMS 2259 Chemical Check Analysis Lim
9、its, Wrought Low-Alloy and Carbon SteelsAMS 2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging StockAMS 2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tubing2.2 ASTM
10、 Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.ASTM E 8 Tension Testing of Metallic MaterialsASTM E 8M Tension Testing of Metallic Materials (Metric)ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and W
11、rought Iron3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall 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 purchaser:3.1.1 Check Analysis: Composition v
12、ariations shall meet the applicable requirements of AMS 2259.3.2 Condition: Cold drawn and annealed.3.2.1 Fabrication: Any surface finishing operation applied to remove objectionable pits and surface blemishes shall be performed prior to the last annealing. A light polish to improve surface appearan
13、ce may be employed after annealing.TABLE 1 - CompositionElement min maxCarbon - 0.15Manganese 0.30 0.60Phosphorus - 0.040Sulfur - 0.050SAE INTERNATIONAL AMS5050K Page 2 of 5_ 3.3 Properties: Tubing shall conform to the following requirements:3.3.1 Tensile Properties: Shall be as shown in Table 2, de
14、termined in accordance with ASTM E 8 or ASTM E 8M:3.3.2 Flarability: Specimens as in 4.3.1 shall withstand flaring at room temperature, without formation of cracks or other visible defects, by being forced axially with steady pressure over a hardened and polished tapered steel pin having a 74 degree
15、 included angle, to produce a flare having a permanent expanded OD not less than shown in Table 3. After flaring, the inside surface of the tubing shall be smooth and shall show no evidence of conditions that might prevent the assembly of pressure tight joints.3.4 Quality: Tubing, as received by pur
16、chaser, 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 heavy scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, and other imperfections detrimental to usage of
17、 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 removal of such imperfections is no
18、t required.TABLE 2 - Minimum Tensile PropertiesNominal ODInchesNominal ODMillimetersElongationin 2 Inches (50.8 mm)%Full TubeElongationin 2 Inches (50.8 mm)%StripUp to 0.50, inclOver 0.50 to 5.50, inclUp to 12.7, inclOver 12.7 to 139.7, incl3235 -25 TABLE 3 - Minimum OD Increase, PercentNominal Wall
19、 ThicknessPercent of ODOD IncreasePercentUp to 7, inclOver 73545SAE INTERNATIONAL AMS5050K Page 3 of 5_ 3.5 Tolerances: Shall conform to AMS 2253 or MAM 2253.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of tubing shall supply all samples for vendors tests and shall
20、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 tubing conforms to specified requirements.4.2 Classification of Tests: All technical requirements of this specification are acc
21、eptance tests and shall be performed on each heat or lot as applicable.4.3 Sampling and Testing: Shall be in accordance with AMS 2370 and the following:4.3.1 Specimens for flarability (3.3.2) tests shall be full tubes or sections cut from a tube. The end of the specimen to be flared shall be cut squ
22、are, with the cut end smooth and free from burrs, but not rounded. One or more specimens from each lot shall be tested.4.4 Reports: The vendor of the product shall furnish, with each shipment, a report showing the results of chemical composition for each heat, and for tensile properties and flarabil
23、ity test results 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, AMS 5050K, size and quantity. 4.5 Resampling and Retesting: Shall be in accordance with AMS 2370.5. PREPARATION FOR DELI
24、VERY: 5.1 Sizes: Except 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 m), but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m).SAE INTERNATIONAL AMS5050K Page 4 of
25、5_ 5.2 Identification: Shall be in accordance with AMS 2807.5.3 Protective Treatment: Tubing shall be protected from corrosion prior to shipment.5.4 Packaging: Tubing shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertain
26、ing to the handling, packaging, and transportation of the tubing to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENT: A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONS: Tubing not conforming to
27、 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 been made to the previous issue of thi
28、s specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.8.2 Dimensions in inches are primar
29、y; dimensions in SI units are shown as the approximate equivalents of the primary units and are presented only for information.8.3 Terms used in AMS are clarified in ARP1917.8.4 Purchase documents should specify not less than the following:AMS 5050KSize of tubing desiredQuantity of tubing desired.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “E”SAE INTERNATIONAL AMS5050K Page 5 of 5_
