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 2017 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:/standards.sae.org/ARP4926B AEROSPACE RECOMMENDED PRACTICE ARP4926 REV. B Issued 1994-05 Revised 2011-06 Reaffirme
5、d 2017-08 Superseding ARP4926A Alloy Verification and Chemical Composition Inspection of Welding Wire RATIONALE ARP4926B has been reaffirmed to comply with the SAE Five-Year Review policy. 1. SCOPE This SAE Aerospace Recommended Practice (ARP) covers procedures for welding wire verification and conf
6、ormance to specification composition. 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of the other publications shall be the issue in effect on the date of the purch
7、ase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 ASTM Publications Available
8、from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E 34 Chemical Analysis of Aluminum and Aluminum-Base Alloys ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and
9、Wrought Iron ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel Iron Alloys ASTM E 354 Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys ASTM E 539 X-Ray Fluorescence Spectrometric Analys
10、is of 6Al-4V Titanium Alloy ASTM E 1251 Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectroscopy ASTM E 1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique ASTM E 1941 Determination of Carbon in Refractory and Reactive Metals an
11、d Their Alloys ASTM E 2371 Analysis of Titanium and Titanium Alloys by Atomic Emission Plasma Spectrometry 2.2 ANSI Publications Available from American National Standards Institute, 25 West 43rdStreet, New York, NY 10036 or www.ansi.org. EN 14242 Aluminium and aluminium alloys. Chemical analysis. I
12、nductively coupled plasma optical emission spectral analysis 3. TECHNICAL REQUIREMENTS 3.1 Chemical Composition Tests 3.1.1 Chemical analysis to determine conformance of titanium wire to applicable procurement specification requirements shall be in accordance with ASTM E 1941 for carbon, ASTM E 1447
13、 for hydrogen, ASTM E 1409 for oxygen and nitrogen, and other elements in accordance with ASTM E 2371 (and ASTM E 539 for Ti6Al-4V) or by other analytical methods acceptable to purchaser. Wire shall be in the finished diameter form when analyzed. See 6.1. 3.1.2 Chemical analysis to determine conform
14、ance of other than titanium wire to applicable procurement specification requirements shall be by wet chemical methods in accordance with ASTM E 34, ASTM E 350, ASTM E 353, or ASTM E 354, by spectrochemical methods in accordance with ASTM E 1251 or EN 14242, or by other analytical methods acceptable
15、 to purchaser. Wire shall be in the finished diameter form when analyzed. See 6.1. 3.2 Alloy Verification Tests Thermoelectric, eddy current, or comparative spectroscopy shall be used to determine that the welding wire has not been mixed or misidentified. See 6.1. The alloy verification test method
16、shall be capable of distinguishing the alloy from all other alloys processed within the facility. Testing shall be performed at receiving inspection, during any in-process welding, and at final inspection operations. See 4.3.2 through 4.3.5. 3.2.1 Calibration and operation standards for alloy verifi
17、cation test methods shall be in accordance with the apparatus manufacturers requirements and shall be acceptable to purchaser of the wire. 3.2.2 When multiple tests are used to distinguish the desired alloy from other alloys, tests shall be performed on the same samples utilizing the same sampling p
18、lan. 4. QUALITY ASSURANCE REQUIREMENTS 4.1 Responsibility for Inspection The supplier of the welding wire shall be responsible for the performance of all required tests and to ensure that alloy verification and composition have been maintained in accordance with an established quality system. 4.2 Id
19、entification Controls 4.2.1 Records of work performed, such as work instructions and travelers, shall be kept throughout the manufacturing process to maintain lot identity through all operations. 4.2.2 Records shall account for the disposition of the material during all stages of manufacturing, incl
20、uding subcontract operations, to the extent necessary to preclude misidentification. 4.2.3 Wire stock and finished wire shall be identified at all times with the alloy specification number, heat and/or lot number, and the work order number or control number. Identification methods shall be selected
21、and controlled to prevent the loss of identification at all times throughout processing, transportation, handling, and storage. SAE INTERNATIONAL AMS4926B Page 2 of 4_ 4.3 Sampling and Testing 4.3.1 Chemistry Conformance Testing One or more samples from each heat shall be tested for conformance to t
22、he chemical composition limits of the applicable welding wire specification at final diameter. When processing may affect chemical composition, one or more samples from each lot shall be tested after that processing is completed. A lot shall be all wire from a common heat which is processed to finis
23、hed size at one time. 4.3.2 Receiving Inspection Verification Both ends of all incoming raw materials received as coils or spools to be used in the manufacture of welding wire shall be alloy verified in accordance with 3.2. Material received as bar or cut lengths shall be sampled in accordance with
24、Table 1. TABLE 1 ACCEPTANCE SAMPLING PLAN (1) Lot Size Sample Size Lot Size Sample Size Up to 5 All 501 to 1200 19 6 to 50 5 1201 to 3200 23 51 to 90 7 3201 to 10,000 29 91 to 150 11 10,001 to 35,000 35 151 to 280 13 35,001 and over 40 281 to 500 16 (1) Reject the lot if any of the samples do not me
25、et the specified requirements. 4.3.3 In-Process Verification During the wire manufacturing process, whenever wire is to be welded together, alloy verification (3.2) shall be performed on both wire ends prior to being welded. The only exception to this is when breakage occurs during the drawing proce
26、ss of a single reel or spool of wire where the break ends are trimmed and welded back together. 4.3.4 Finished Wire Verification When the wire is at final diameter, verification shall be performed on a sample taken at each end of each spool or coil in the lot. This verification shall be performed pr
27、ior to spooling or straightening and cutting operations, as applicable. 4.3.5 Final Inspection Verification The Table 1 sampling plan may be used provided it can be documented that traceability was maintained for all operations subsequent to finished size alloy verification. If material identity is
28、not maintained, each affected length of wire in the lot shall be verified in accordance with 3.2. 4.3.5.1 For finished spooled wire, alloy verification (3.2) shall be performed on both ends of each spool. 4.3.5.2 For cut length wires, alloy verification shall be required in accordance with Table 1 s
29、ampling plan. 4.4 Reports In addition to the reports required in the procurement specification, the supplier of welding wire shall furnish a certification stating that all requirements of this document have been satisfied. 4.5 Alloy verification procedures shall be available for review and approval
30、by purchaser. SAE INTERNATIONAL AMS4926B Page 3 of 4_ 5. REJECTION Wire not conforming to this specification, or to modifications authorized by purchaser, shall be subject to rejection. 6. NOTES 6.1 When wire is copper or otherwise coated, removal of coating may be required to ensure accurate and di
31、stinguishing composition (3.1) and alloy verification (3.2). 6.2 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 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 contain editorial changes only. PREPARED BY AMS COMMITTEE “B” SAE INTERNATIONAL AMS4926B Page 4 of 4_
