1、AEROSPACE MATERIAL SPECIFICATION AMS5578 REV. GIssued 1969-11 Revised 2003-07 Reaffirmed 2014-12 Superseding AMS5578F Steel, Corrosion and Heat-Resistant, Welded Tubing12Cr - 8.5Ni - 0.30Cb - 1.1Ti - 2.0Cu Vacuum Induction Plus Consumable Electrode Vacuum Melted Solution Heat Treated, Precipitation
2、Hardenable (Composition similar to UNS S45500) RATIONALE AMS5578G 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 to advance the state of technical and engineering sciences. The use of this repor
3、t 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 least every five years at which time it may be revised, reaffirmed, stabilized, or
4、 cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All 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,
5、 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: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report
6、, please visit http:/www.sae.org/technical/standards/AMS5578G 1. SCOPE:1.1 Form: This specification covers a premium-quality corrosion and heat-resistant steel in the form of welded and drawn tubing.1.2 Application: This tubing has been used typically for parts requiring corrosion resistance and hig
7、h strength up to 800 F (427 C) after precipitation heat treatment, but usage is not limited to such applications.1.2.1 Certain design and processing procedures may cause this tubing to become susceptible to stress-corrosion cracking after precipitation heat treatment; ARP1110 recommends practices to
8、 minimize such conditions.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 unless a specific document issue is spec
9、ified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.SAE INTERNATIONAL AMS5578G Page 2 of 7 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.o
10、rg.AMS 2243 Tolerances, Corrosion and Heat-Resistant Steel TubingAMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron AlloysAMS 2300 Steel Cleanliness, Premium Aircraft-Quality, Magnetic Particle Inspection Proced
11、ureAMS 2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS 2634 Ultrasonic Inspection, Thin Wall Metal TubingAMS 2750 PyrometryAMS 2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and
12、Alloys, Sheet, Strip, Plate, and Aircraft TubingARP1110 Minimizing Stress Corrosion Cracking in Wrought Forms of Steels and Corrosion-Resistant Steels and Alloys2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM A 370 Mechanical Testing
13、 of Steel ProductsASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron AlloysASTM E 426 Electromagnetic (Eddy-Current) Examination of Seamless and Welded Tubular Products, Austenitic Stainless Steel and Similar AlloysASTM E 1417 Liquid Penetrant
14、 Examination3. 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 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser.SAE INTERNATIONAL AMS5578G Page 3
15、of 7 3.1.1 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248.3.2 Melting Practice: Steel shall be multiple melted using vacuum induction melting followed by consumable electrode vacuum remelting.3.3 Condition: Solution heat treated and, unless solution heat tr
16、eatment is performed in an atmosphere yielding a bright finish, pickled as required or passivated. Tubing shall have been cold worked sufficiently to ensure proper weld reinforcement height and roundness in the weld reinforcement area.3.4 Fabrication: Tubing shall be produced by a welded and drawn p
17、rocess. Any finishing operation applied to remove objectionable pits and surface blemishes shall be performed prior to final solution heat treatment. A light polish to improve external surface appearance may be employed after solution heat treatment.3.5 Solution Heat Treatment: Tubing shall be solut
18、ion heat treated by heating to 1525 F 25 (829 C 14), holding at heat for a time commensurate with wall thickness and heating equipment and procedure used but not less than 5 minutes, and quenching in water. Pyrometry shall be in accordance with AMS 2750.TABLE 1 - CompositionElement min maxCarbonMang
19、aneseSiliconPhosphorusSulfurChromiumNickelColumbiumTitaniumCopperMolybdenum-11.007.500.100.801.50-0.050.500.500.0150.01512.509.500.501.402.500.50SAE INTERNATIONAL AMS5578G Page 4 of 7 3.6 Properties: Tubing shall conform to the following requirements; hardness and tensile testing shall be performed
20、in accordance with ASTM A 370.3.6.1 As Solution Heat Treated: 3.6.1.1 Tensile Strength: Shall be not higher than 165 ksi (1138 MPa).3.6.2 After Precipitation Heat Treatment: Tubing shall meet the requirements of 3.6.2.1 and 3.6.2.2 after being precipitation heat treated by heating to 950 F 10 (510 C
21、 6), holding at heat for 4 hours 0.25, and cooling to room temperature at a rate equivalent to air cooling.3.6.2.1 Tensile Properties: Shall be as shown in Table 2.3.6.2.2 Hardness: Shall be not lower than 42 HRC, or equivalent (See 8.2).3.7 Quality: Tubing, as received by purchaser, shall be unifor
22、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 grease, oil and other matter, heavy scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, and other imperfections detrimental to u
23、sage 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 removal of such imperfectio
24、ns is not required.TABLE 2A - Minimum Tensile Properties, Inch/Pound UnitsNominal Wall ThicknessInchTensileStrengthksiYield Strengthat 0.2% OffsetksiElongationin 2 Inches or 4D%Up to 0.020, excl0.020 to 0.062, inclOver 0.062220220220205205205-43TABLE 2B - Minimum Tensile Properties, SI UnitsNominal
25、Wall ThicknessMillimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongationin 50.8 mm or 4D%Up to 0.51, excl0.51 to 1.57, inclOver 1.57151715171517141314131413-43SAE INTERNATIONAL AMS5578G Page 5 of 7 3.7.1 Steel shall be premium aircraft quality conforming to AMS 2300.3.7.2 When specified
26、by purchaser, tubing shall be subjected to fluorescent penetrant inspection in accordance with ASTM E 1417, to ultrasonic inspection in accordance with AMS 2634, to electromagnetic (eddy-current) inspection in accordance with ASTM E 426, or to any combination thereof. Tubing shall meet the acceptanc
27、e criteria established by the cognizant engineering organization.3.8 Tolerances: Shall conform to all applicable requirements of AMS 2243.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of tubing shall supply all samples for vendors tests and shall be responsible for t
28、he 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: 4.2.1 Acceptance Tests: . Tests for the following requirements are acceptanc
29、e tests and shall be performed on each heat or lot as applicable:4.2.1.1 Composition (3.1) of each heat.4.2.1.2 Tensile properties (3.6.1.1) of each lot as solution heat treated.4.2.1.3 Tensile properties (3.6.2.1) and hardness (3.6.2.2) of each lot after precipitation heat treatment at 950 F (510 C
30、).4.2.1.4 Tolerances (3.8).4.2.2 Periodic Tests: Tests for the following requirements are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by the purchaser.4.2.2.1 Frequency severity cleanliness rating (3.7.1).4.3 Sampling and Testi
31、ng: Shall be in accordance with AMS 2371.SAE INTERNATIONAL AMS5578G Page 6 of 7 4.4 Reports: The vendor of the tubing shall furnish with each shipment a report showing the following results of tests and relevant information:4.4.1 For each heat: Composition.4.4.2 For each lot: Tensile strength as sol
32、ution heat treatedTensile properties after precipitation heat treatmentHardness after precipitation heat treatmentWhen specified, nondestructive test results.4.4.3 A statement that the product conforms to the other technical requirements.4.4.4 Purchase order numberHeat and lot numbersAMS 5578GSizeQu
33、antity.4.5 Resampling and Retesting: Shall be in accordance with AMS 2371.5. PREPARATION FOR DELIVERY: 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 shipme
34、nt shall be supplied in lengths shorter than 10 feet (3 m).5.2 Identification: Shall be in accordance with AMS 2807.5.3 Packaging: Tubing shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packagin
35、g, and transportation of the tubing to ensure carrier acceptance and safe delivery.SAE INTERNATIONAL AMS5578G Page 7 of 7 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 con
36、forming 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 technical revisions, not editorial changes, have been made to the previous iss
37、ue of this 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.8.1.1 This AMS 5578G is an
38、 editorial correction necessary to correct publication errors in the F revision. In this instance, the change bar symbol(s) included herein are for the convenience of the user in locating areas where technical changes have been made to the E and F revisions of this specification.8.2 Hardness convers
39、ion tables for metals are presented in ASTM E 140.8.3 Terms used in AMS are clarified in ARP1917.8.4 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 equivalents of the primary units and are presented only for information.8.5 Purchase documents should specify not less than the following:AMS 5578GSize of tubing desiredQuantity of tubing desiredIf applicable, nondestructive test requirements (See 3.7.2).PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “F”
