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 ther
2、efrom, 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
3、publication 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: +1 724-776-49
4、70 (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/AMS4951J AEROSPACE MATERIAL SPECIFICATION AMS4951 REV. J Issued 1958-03 Revised 2017-11 Supers
5、eding AMS4951H Titanium Welding Wire Commercially Pure Environment Controlled Packaging (Composition similar to UNS R50120) RATIONALE AMS4951J results from a Five-Year Review and update of this specification that includes the addition of ASTM E2994 (3.1), removal of sample size allowance for hydroge
6、n of Table 1 (covered by ASTM E1447) and revises Reports (4.4) 1. SCOPE 1.1 Form This specification covers one grade of commercially pure titanium in the form of wire for welding filler metal. 1.2 Application This wire has been used typically as filler metal for gas-metal-arc and gas-tungsten-arc we
7、lding with chemistry matched to unalloyed titanium UNS R50400, but usage is not limited to such applications. 1.3 Classification Product covered by this specification is classified by melting practice as follows: Type I - Multiple melted with vacuum arc remelting as the last melting cycle. Type II -
8、 Single melted using either the electron beam cold hearth or plasma arc cold hearth method. 1.3.1 Unless a specific type is ordered, either type may be supplied. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specificatio
9、n 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 cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE INT
10、ERNATIONAL AMS4951J Page 2 of 7 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2249 Chemical Check Analysis Limits Titanium and Titanium Alloys AMS28
11、14 Packaging and Marking of Packages of Welding Wire Premium Quality AMS2816 Identification Welding Wire, Tab Marking Method AMS2819 Identification, Welding Wire Direct Color Code System ARP1876 Weldability Test for Weld Filler Metal Wire ARP1917 Clarification of Terms Used in Aerospace Metals Speci
12、fications ARP4926 Alloy Verification and Chemical Composition Inspection of Welding Wire 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E8/E8M Tension Testing of Metallic Materials
13、 ASTM E1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by Inert Gas Fusion ASTM E1447 Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity/Infrared Detection Method ASTM E1941 Determination of Carbon in Refractory and Reacti
14、ve Metals and Their Alloys by Combustion Analysis ASTM E2371 Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry ASTM E2994 Analysis of Titanium and Titanium Alloys by Spark Atomic Emission Spectrometry and Glow Discharge Atom
15、ic Emission Spectrometry 3. TECHNICAL REQUIREMENTS 3.1 Wire Composition Shall conform to the percentages by weight shown in Table 1; carbon shall be determined in accordance with ASTM E1941, hydrogen in accordance with ASTM E1447, oxygen and nitrogen in accordance with ASTM E1409, and other elements
16、 in accordance with ASTM E2371 or ASTM E2994. Other analytical methods may be used if acceptable to the purchaser. SAE INTERNATIONAL AMS4951J Page 3 of 7 Table 1 - Composition Element Min Max Iron Oxygen (3.1.1.1) Carbon (3.1.1.1) Nitrogen (3.1.1.1) Hydrogen (3.1.1.1) Yttrium (3.1.1.2) Other Element
17、s, each (3.1.1.2) Other Elements, total (3.1.1.2) Titanium - 0.08 - - - - - - remainder 0.12 0.16 0.03 0.015 0.005 (50 ppm) 0.005 (50 ppm) 0.05 0.20 3.1.1 Except for carbon, oxygen, nitrogen, and hydrogen, chemical analysis of initial ingot, bar, or rod stock before drawing is acceptable provided th
18、e processes used for drawing or rolling, annealing, and cleaning are controlled to ensure continued conformance to composition requirements. 3.1.1.1 Carbon, oxygen, nitrogen, and hydrogen shall also be determined on each lot of finished wire. 3.1.1.2 Determination not required for routine acceptance
19、. 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS2249. 3.2 Melting Practice Type I shall be multiple melted with the last melting cycle under vacuum. When multiple melted, melting cycle(s) prior to the final melting cycle shall be made using vacuum consumabl
20、e electrode, nonconsumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice(s). The final melting cycle shall be made using vacuum arc remelting (VAR) practice with no alloy additions permitted. Type II shall be single melted using electron beam cold hearth or plasma
21、arc cold hearth melting practice. 3.2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be inert gas at a pressure not higher than 1000 mm of mercury. 3.2.2 The electrode tip for nonconsumable electrode melting shall be water-cooled copper. 3.3 Condition As drawn, having
22、tensile strength not higher than 130 ksi (896 MPa), determined in accordance with ASTM E8/E8M, and descaled. 3.4 Fabrication 3.4.1 Wire shall be rolled or drawn from rod or bar descaled by a process that does not affect the composition of the wire. Surface irregularities inherent with a forming proc
23、ess that does not tear the wire surface are acceptable provided the wire conforms to the tolerances of 3.7. 3.4.2 In-process annealing, if required between cold rolling or drawing operations, shall be performed after cleaning the material and in a vacuum or in protective inert atmosphere to avoid su
24、rface oxidation and adsorption of other extraneous elements unless the contaminated surface is subsequently removed mechanically or chemically. 3.4.3 Butt welding is permissible provided both ends to be joined are from the same heat and lot of material being processed at the same time, or the repair
25、 of a wire break is made at the wire processing station, or identity of the ends maintained if the wire break is butt welded away from the wire processing station. The butt weld shall not interfere with the uniform, uninterrupted feeding of the wire in machine welding equipment. SAE INTERNATIONAL AM
26、S4951J Page 4 of 7 3.4.4 Drawing compounds, oxides, dirt, oil, and other foreign materials shall be removed by cleaning processes which will neither result in pitting, nor cause gas absorption by the wire, nor deposition of substances harmful to welding operations. 3.4.5 Surface contaminants or diss
27、olved hydrogen picked up during wire processing that can adversely affect the welding characteristics, the operation of the equipment, or the properties of the weld metal shall be removed. 3.5 Properties Wire shall conform to the following requirements: 3.5.1 Weldability Melted wire shall flow smoot
28、hly and evenly during welding and shall produce acceptable welds. ARP1876 may be used to resolve disputes. 3.5.2 Spooled Wire Shall conform to 3.5.2.1, 3.5.2.2 and 3.5.2.3. 3.5.2.1 Winding Filler metal in coils and on spools shall be wound so that kinks, waves, sharp bends, overlapping, or wedging a
29、re not encountered, leaving the filler metal free to unwind without restriction. The outside end of the electrode (the end where welding is to begin) shall be identified so it can be located readily and shall be fastened to avoid unwinding. The winding shall be level winding. 3.5.2.2 Cast Wire, woun
30、d on standard diameter spools as shown in Table 2 shall have imparted to it a curvature such that a specimen sufficient in length to form one loop with a 1 inch (25 mm) overlap, when cut from the spool and laid on a flat surface, shall form a circle (cast) within the limits shown in Table 2. 3.5.2.3
31、 Helix The specimen on which cast was determined, when laid on a flat surface and measured between adjacent turns, shall show a vertical separation (helix) not greater than shown in Table 2. Table 2 Table 2A - Cast and helix requirements - inch-pound units Spool Diameter Inches Cast Inches Helix Inc
32、h Min Max Max 4 2.5 9 0.50 8 10 20 0.75 12 15 30 1.00 Table 2B - Cast and helix requirements, SI units Spool Diameter Millimeters Cast Millimeters Helix Millimeters Min Max Max 102 64 229 13 203 254 508 19 305 381 762 25 SAE INTERNATIONAL AMS4951J Page 5 of 7 3.6 Quality Wire, as received by purchas
33、er, 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. 3.7 Sizes and Tolerances Wire shall be supplied in the sizes and to the tolerance
34、s shown in 3.7.1 and 3.7.2. 3.7.1 Diameter Shall be as shown in Table 3. Table 3 Table 3A - Sizes and diameter tolerances, inch/pound units Form Nominal Diameter Inch Tolerance, Inch Plus Tolerance, Inch Minus Cut Lengths Cut Lengths Spools Spools Spools 0.030, 0.045, 0.062, 0.078 0.094, 0.125, 0.15
35、6, 0.188 0.007, 0.010, 0.015 0.020, 0.030, 0.035, 0.045 0.062, 0.078, 0.094 0.002 0.002 0.0005 0.001 0.002 0.002 0.002 0.0005 0.002 0.002 Table 3B - Sizes and diameter tolerances, SI units Form Nominal Diameter Millimeters Tolerance, Millimeter Plus Tolerance, Millimeter Minus Cut Lengths Cut Length
36、s Spools Spools Spools 0.76, 1.14, 1.57, 1.98 2.39, 3.18, 3.96, 4.78 0.18, 0.25, 0.38 0.51, 0.76, 0.89, 1.14 1.57, 1.98, 2.39 0.05 0.05 0.013 0.03 0.05 0.05 0.05 0.013 0.05 0.05 3.7.2 Length Cut lengths shall be furnished in 36 inch (914 mm) length, unless specified otherwise. Other standard lengths
37、 are 12, 18, or 27 inch (305, 457, or 686 mm). Length, as ordered, shall not vary more than +0, -0.5 inch (+0, -13 mm) from the length ordered. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of wire shall supply all samples for producers tests and shall be responsible
38、 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), condition (3.3), tolerances (3
39、.7), and alloy verification (5.2) are acceptance tests and shall be performed on each heat or lot as applicable. 4.2.2 Periodic Tests Weldability (3.5.1), cast (3.5.2.2), and helix (3.5.2.3) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing
40、 is specified by purchaser. SAE INTERNATIONAL AMS4951J Page 6 of 7 4.3 Sampling and Testing Shall be as follows; a lot shall be all wire of the same nominal size from the same heat processed under the same conditions in the same production run: 4.3.1 For Acceptance Tests 4.3.1.1 Composition One samp
41、le from each heat; except that for carbon, oxygen, nitrogen, and hydrogen, one sample from each lot at finished diameter, obtained after all thermal and chemical processing is completed. 4.3.1.2 Condition At least one sample from each lot. 4.4 Reports The producer shall furnish with each shipment a
42、report showing producer identity, country where the metal was melted (i.e., final melt in the case of metal processed by multiple melting operations). The producer of welding wire shall furnish with each shipment a report showing the results of tests for composition of each heat and for the carbon,
43、oxygen, nitrogen, and hydrogen content of each lot, and stating that the weld wire conforms to the other technical requirements of this specification. This report shall include the purchase order number, heat and lot numbers, AMS4951J, size, and quantity. 4.5 Resampling and Retesting If any specimen
44、 used in the above tests fails to meet specified requirements, disposition of the wire may be based on the results of testing three additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the wir
45、e represented and no additional testing shall be permitted. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Wire shall be supplied either on spools in one continuous length for machine welding or in cut lengths for manual welding as ordered. Wire on each spool or in each pack
46、age of cut lengths shall be from the same lot of material. 5.2 Alloy Verification Wire from each spool or in each package of cut lengths shall be alloy verified by a method acceptable to purchaser. The alloy verification procedures of ARP4926 are recommended. 5.3 Identification Shall be in accordanc
47、e with AMS2816 unless AMS2819 or other method is specified by purchaser. 5.3.1 An 8 inch (203 mm) length of wire shall be made accessible at both ends of each spool for alloy verification. 5.4 Packaging and Marking Shall be in accordance with AMS2814. 6. ACKNOWLEDGMENT A producer shall mention this
48、specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Wire not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS4951J Page 7 of 7 8. NOTES 8.1 Revision Indi
49、cator 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 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
