1、_SAE Technical Standards Board Rules providHWKDW7KLVUHSRUWLVSXEOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQ LFDODQGHQJLQHHULQJVFLHQFHV7KHXVHRIWKLVUHSRUWL sentirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising thereIURPLVWKHVROHUHVSRQVLELOLW
2、RIWKHXVHUSAE 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 2016 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in
3、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 (outside USA)Fax: 724-776-0790Email: Cus
4、tomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS4391AEROSPACEMATERIAL SPECIFICATIONAMS4391Issued 2010-10Reaffirmed 2016-05Magnesium Alloy Welding Wire2.8Nd - 1.4Gd - 0.4Zn -
5、0.6Zr (EV31A)(Composition similar to UNS M12310)RATIONALEAMS4391 has been reaffirmed to comply with the SAE five-year review policy.1. SCOPE 1.1 Form This specification covers a magnesium alloy in the form of welding wire. 1.2 Application This wire has been used typically as filler metal for gas-met
6、al-arc and gas-tungsten-arc welding of magnesium alloys of similar composition, but usage is not limited to such applications. 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. T
7、he supplier may work to a subsequent 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 Publications Available from SAE In
8、ternational, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy, Wrought Products (Except Forging Stock), and Rolled, Forged, or F
9、lash Welded Rings AMS2813 Packaging and Marking of Packages of Welding Wire, Standard Method ARP1876 Weldability Test for Weld Filler Metal Wire ARP4926 Alloy Verification and Chemical Composition Inspection of Welding Wire 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages b
10、y weight as shown in Table 1, determined in accordance with AMS2355. TABLE 1 - COMPOSITION Element min max Neodymium 2.6 3.1Gadolinium 1.0 1.7Zinc 0.20 0.50Zirconium 0.4 1.0Other Rare Earths (3.1.1) - 0.4 Silver - 0.05 Copper - 0.01 Iron - 0.010 Nickel - 0.0020 Other elements, each (3.1.2) - 0.01 Ma
11、gnesium remainder3.1.1 Other rare earths shall principally be the total of cerium, lanthanum, and praseodymium. The supplier shall analyze for the presence of these three elements when determining acceptance but the presence of additional rare earth elements shall not be cause for rejection provided
12、 the total remains less than 0.4%. 3.1.2 Determination not required for routine acceptance. 3.1.3 Chemical analysis of initial ingot, bar, or rod stock is acceptable provided the processes used for manufacture and cleaning are controlled to ensure conformance to composition requirements, and the fac
13、ility employs procedures to ensure traceability of wire to the originally analyzed ingot. 3.2 Condition Wire for cut lengths shall be extruded and for spooled wire shall be extruded and sized. Drawn wire may be supplied if acceptable to purchaser. 3.3 Fabrication 3.3.1 Butt welding is permissible pr
14、ovided both ends to be joined are identified by chemical analysis or the repair is made at the wire processing station. The butt weld shall not interfere with uniform, uninterrupted feeding of the wire in machine welding equipment. 3.3.2 Oxides, dirt, and extruding compounds shall be removed by clea
15、ning processes which will neither result in pitting nor cause gas absorption by the wire or deposition of substances harmful to welding operations. 3.4 Weldability Melted wire shall flow smoothly and evenly during welding and shall produce acceptable welds. ARP1876 may be used to resolve disputes. S
16、AE INTERNATIONAL AMS4391 Page 2 of 5_3.5 Quality Wire, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to welding operations, operation of welding equipment, or properties of the deposited weld metal.3.6 S
17、izes and Tolerances Wire shall be supplied in the sizes and to the tolerances shown in 3.6.1 and 3.6.2. 3.6.1 Diameter Shall conform to the tolerances shown in Table 2. TABLE 2A - TOLERANCES, INCH-POUND UNITS FormNominal Diameter Inch Tolerance, InchplusTolerance, Inch minusCut Lengths Spools0.062 t
18、o 0.250, incl 0.040 to 0.125, incl Over 0.125 to 0.187, incl 0.0070.0030.0070.0070.0040.007TABLE 2B - TOLERANCES, SI UNITS FormNominal Diameter MillimetersTolerance, Millimeter plusTolerance, MillimeterminusCut Lengths Spools1.57 to 6.35, incl 1.00 to 3.17, incl Over 3.17 to 4.75, incl 0.180.0760.18
19、0.180.100.183.6.2 Length Cut lengths shall be furnished in 36-inch (914-mm) lengths, or as ordered, and shall not vary more than +0, -1 inch (-25 mm). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of wire shall supply all samples for vendors tests and shall be responsi
20、ble 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 wire conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1) and sizes and tolerances (3.
21、6) are acceptance tests and shall be performed on each lot. 4.2.2 Periodic Tests Weldability (3.4.1) is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. SAE INTERNATIONAL AMS4391 Page 3 of 5_4.3 Sampling and Testing S
22、hall be in accordance with AMS2355. 4.4 Reports The vendor of wire shall furnish with each shipment a report stating that the wire conforms to the composition and other technical requirements of this specification. This report shall include the purchase order number, lot number, AMS4391, nominal siz
23、e, and quantity. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Wire shall be supplied on spools in one continuous length for machine welding or in cut lengths for manual welding, as ordered. 5.2 Wire on each spool shall be of one continuous length
24、from the same heat of alloy. Packages of cut lengths shall not contain wire from more than one heat of alloy. 5.3 Wire furnished on spools shall be closely wound in layers but adjacent turns within a layer need not necessarily be touching. Wire shall be wound so as to avoid producing kinks, waves, a
25、nd sharp bends, and shall be free to unwind without restriction caused by overlapping or wedging. 5.4 Wire from each spool or package of cut lengths shall be alloy verified by a method acceptable to purchaser. The alloy verification procedures of ARP4926 are recommended. 5.4.1 An 8-inch (203-mm) len
26、gth of wire shall be made accessible at both ends of each spool for alloy verification. 5.5 Packaging and Marking Shall be in accordance with AMS2813. 6. ACKNOWLEDGMENT A vendor shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Wire not c
27、onforming to 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 i
28、ssue 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. 8.2 Terms used in AMS are clarified in
29、 ARP1917. 8.3 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 approximate equivalents of the primary units and are presented only for information. SAE INTERNATIONAL AMS4391 Page 4 of 5_8.4 Purchase documents should specify not less than the following: AMS4391Size and form (spools or cut lengths) of wire required Weight of spools required Quantity of wire required. PREPARED BY AMS COMMITTEE “D“ SAE INTERNATIONAL AMS4391 Page 5 of 5_
