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/AMS4952F AEROSPACE MATERIAL SPECIFICATION AMS4952 REV. F Issued 1988-07 Revised 2
5、015-12 Superseding AMS4952E Titanium Alloy, Welding Wire 6AI - 2Sn - 4Zr - 2Mo (Composition similar to UNS R54620) RATIONALE AMS4952F results from a Five Year Review and update of this specification that includes the removal of sample size allowance for hydrogen of Table 1 (covered by ASTM E1447) an
6、d revises the report paragraph (4.4). 1. SCOPE 1.1 Form This specification covers a titanium alloy in the form of welding wire. 1.2 Application This wire has been used typically as filler metal for gas-metal-arc and gas-tungsten-arc welding, but usage is not limited to such applications. 2. APPLICAB
7、LE 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 specified. When the referenced document ha
8、s 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 International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA)
9、, www.sae.org. AMS2249 Chemical Check Analysis Limits, Titanium and Titanium Alloys AMS2813 Packaging and Marking of Packages of Welding Wire, Standard Method AMS2814 Packaging and Marking of Packages of Welding Wire, Premium Quality AMS2816 Identification Welding Wire, Tab Marking Method SAE INTERN
10、ATIONAL AMS4952F Page 2 of 7 AMS2819 Identification, Welding Wire Direct Color Code System ARP1876 Weldability Test for Weld Filler Metal Wire ARP4926 Alloy Verification and Chemical Composition Inspection of Welding Wire 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive
11、, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique ASTM E1447 Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal C
12、onductivity/Infrared Detection Method ASTM E1941 Determination of Carbon in Refractory and Reactive 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 3. TECHNICAL REQ
13、UIREMENTS 3.1 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 in accordance with ASTM E2371. Other analytic
14、al methods may be used if acceptable to the purchaser. Table 1 - Composition Element min max Aluminum 5.50 6.50 Zirconium 3.60 4.40 Molybdenum 1.80 2.20 Tin 1.80 2.20 Oxygen (3.1.1.1) - 0.15 Silicon - 0.10 Iron - 0.10 Copper - 0.10 Carbon (3.1.1.1) - 0.04 Nitrogen (3.1.1.1) - 0.0400 (400 ppm) Hydrog
15、en (3.1.1.1) - 0.0125 (125 ppm) Yttrium (3.1.1.2) - 0.0050 (50 ppm) Boron - 0.0030 (30 ppm) Other Elements, each (3.1.1.2) - 0.10 Other Elements, total (3.1.1.2) - 0.40 Titanium remainder 3.1.1 Except for carbon, oxygen, nitrogen, and hydrogen, chemical analysis of initial bar or rod stock before dr
16、awing is acceptable provided the processes used for drawing or rolling, annealing, and cleaning are controlled to ensure conformance to composition requirements. 3.1.1.1 Carbon, oxygen, nitrogen, and hydrogen shall be determined on each lot of finished wire. 3.1.1.2 Determination not required for ro
17、utine acceptance. SAE INTERNATIONAL AMS4952F Page 3 of 7 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS2249. 3.2 Melting Practice Alloy shall be multiple melted. The first melt shall be made by vacuum consumable electrode, nonconsumable electrode, electron
18、beam cold hearth, or plasma arc cold hearth melting practice. The subsequent melt or melts shall be made under vacuum using vacuum arc remelting (VAR) practice. Alloy additions are not permitted in the final melt cycle. 3.2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shal
19、l be argon and/or helium at an absolute 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 Cold drawn, bright finish, in a temper and with a surface finish that will provide proper feeding of the wire i
20、n machine-welding equipment. 3.4 Fabrication 3.4.1 Wire shall be formed from rod or bar descaled by a process that does not affect the composition of the wire. Surface irregularities inherent with a forming process that does not teat the wire surface are acceptable provided the wire conforms to the
21、tolerances of 3.7. 3.4.2 In-process annealing, if required between rolling or drawing operations, shall be performed in a vacuum or in a protective atmosphere to avoid surface oxidation and adsorption of other extraneous elements. Material shall have been chemically or mechanically cleaned prior to
22、annealing. 3.4.3 Butt welding is permissible only at diameters larger than final finished product size provided both ends to be joined are either alloy verified using a method or methods capable of distinguishing the alloy from all other alloys processed within the facility, or the repair is made at
23、 the wire processing station. The butt weld shall not interfere with the uniform, uninterrupted feeding of the wire in machine welding equipment. 3.4.4 Drawing compounds, oxides, dirt, oil, and other foreign materials shall be removed by cleaning processes that will neither result in pitting nor cau
24、se gas absorption by the wire or deposition of substances harmful to welding operations. 3.4.5 Surface contaminants or dissolved gasses picked up during wire processing that can adversely affect the welding characteristics, the operation of the equipment, or the properties of the weld material, shal
25、l be removed. 3.5 Properties Wire shall conform to the following requirements: 3.5.1 Melted wire shall flow smoothly 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 and 3.5.2.2 and 3.5.2.3. SAE INTERNA
26、TIONAL AMS4952F Page 4 of 7 3.5.2.1 Winding Filler metal in coils and on spools shall be wound so that kinks, waves, sharp bends, overlapping, or wedging are not encountered, leaving the filler metal free to unwind without restriction. The outside end of the electrode (the end where welding is to be
27、gin) 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, wound 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 loo
28、p 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 Helix The specimen on which cast was determined, when laid on a flat surface and measured between adjacent turns, shall show a vertical separati
29、on not greater than shown in Table 2. Table 2A - Cast and helix requirements inch/pound units Spool Diameter Inches Cast Inches Helix Inches 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 Millimete
30、rs min max max 102 64 229 13 203 254 508 19 305 381 782 25 3.6 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 depo
31、sited weld metal. 3.7 Sizes and Tolerances Wire shall be supplied in the standard sizes and to the tolerances shown in 3.7.1 and 3.7.2. 3.7.1 Diameter Shall be as shown in Table 3. SAE INTERNATIONAL AMS4952F Page 5 of 7 Table 3A - Sizes and diameter tolerances, inch/pound units Form Nominal Diameter
32、 Inch Tolerance Inch Plus Tolerance Inch Minus Cut Lengths 0.030, 0.045, 0.062, 0.078 0.002 0.002 Cut Lengths 0.094, 0.125, 0.156, 0.188 0.002 0.002 Spools 0.007, 0.010, 0.015, 0.020 0.0005 0.0005 Spools 0.030, 0.035, 0.045 0.001 0.002 Spools 0.062, 0.078, 0.094 0.002 0.002 Table 3B - Sizes and diam
33、eter tolerances, SI units Form Nominal Diameter Millimeters Tolerance Millimeter Plus Tolerance Millimeter Minus Cut Lengths 0.76, 1.14, 1.57, 1.98 0.05 0.05 Cut Lengths 2.39, 3.18, 3.96, 4.78 0.05 0.05 Spools 0.18, 0.25, 0.38, 0.51 0.013 0.013 Spools 0.76, 0.89, 1.14 0.025 0.05 Spools 1.57, 1.98, 2
34、.39 0.05 0.05 3.7.2 Length Cut lengths shall be furnished in 18, 27, or 36 inch (457, 686, or 914 mm) lengths, as ordered, and shall vary not 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 sup
35、ply all samples for producers tests and shall 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 wire conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Accept
36、ance Tests Composition (3.1) and sizes and tolerances (3.7) 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 (3.5.2.1), and helix (3.5.2.2) are periodic tests and shall be performed at a frequen
37、cy selected by the producer unless frequency of testing is specified by purchaser. 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 Comp
38、osition One sample from each heat, except for hydrogen, nitrogen, carbon and oxygen determinations one sample from each lot at finished diameter obtained after all thermal and chemical processing is completed. SAE INTERNATIONAL AMS4952F Page 6 of 7 4.3.1.2 Other Requirements As agreed upon by purcha
39、ser and producer. 4.4 Reports The producer shall furnish with each shipment a report showing producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the results of tests for composition of each heat and for the carbon
40、, oxygen, nitrogen, and hydrogen content of each lot, and state that the wire conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS4952F, nominal size, and quantity. 4.5 Resampling and Retesting If any specimen used in the above
41、tests fails to meet the 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 wire represented.
42、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 package of cut lengths shall be from the same lot of material. 5
43、.2 Alloy Verification Wire on 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. 5.2.1 An 8 inch length of wire shall be made accessible at both ends of each spool for purchasers alloy verifi
44、cation. 5.3 Identification Shall be by tab marking in accordance with AMS2816 unless color coding in accordance with AMS2819 or other method is specified by purchaser. 5.4 Packaging and Marking Shall be in accordance with AMS2813 unless AMS2814 or other method is specified by purchaser. 6. ACKNOWLED
45、GMENT A producer shall include this 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. 8. NOTES 8.1 Revision Indicat
46、or 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,
47、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 ARP1917. SAE INTERNATIONAL AMS4952F Page 7 of 7 8.3 Dimensions and properties in inch/pound units and the Fahrenheit
48、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. 8.4 Purchase documents should specify not less than the following: AMS4952F Size and form (spools or cut lengths) of wire desired Length of cut lengths or weight of spools desired Quantity of wire desired. PREPARED BY AMS COMMITTEE “G”
