1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDO 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 therefrom, LVWKHVROHUHVSR
2、QVLELOLWRIWKHXVHU 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 2016 SAE International All rights reserved. No part of this publication may be reproduced,
3、 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: +1 724-776-4970 (outside USA) Fax: 724-776-
4、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/AMS4955H AEROSPACE MATERIAL SPECIFICATION AMS4955 REV. H Issued 1965-11 Revised 2016-06 Superseding AMS4955G T
5、itanium Alloy, Welding Wire 8Al - 1Mo - 1V (Composition similar to UNS R54810) RATIONALE AMS4955H is a Five Year Review and update of this specification that removes allowance of larger sample size for hydrogen (included in E1447), adds AMS2368 for sampling and revises reporting. 1. SCOPE 1.1 Form T
6、his 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 of titanium alloys, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the followin
7、g 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 has been cancelled and no superseding do
8、cument 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), www.sae.org. AMS2249 Chemical Check
9、Analysis Limits Titanium and Titanium Alloys AMS2368 Sampling and Testing of Wrought Titanium Raw Material Except Forgings and Forging Stock AMS2813 Packaging and Marking of Packages of Welding Wire Standard Method AMS2814 Packaging and Marking of Packages of Welding Wire Premium Quality AMS2816 Ide
10、ntification Welding Wire, Tab Marking Method SAE INTERNATIONAL AMS4955H Page 2 of 7 AMS2819 Identification, Welding Wire Direct Color Code System ARP1876 Weldability Test for Weld Filler Metal Wire ARP1917 Clarification of Terms Used in Aerospace Metals Specifications ARP4926 Alloy Verification and
11、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 E1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Ine
12、rt Gas Fusion Technique 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 Reactive Metals and Their Alloys by Combustion Analysis ASTM E2371 Analysis of Tita
13、nium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic 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 w
14、ith ASTM E1447, oxygen and nitrogen in accordance with ASTM E1409, and other elements in accordance with ASTM E2371. Other analytical methods may be used if acceptable to the purchaser. Table 1 - Composition Element min max Aluminum 7.35 8.35 Molybdenum 0.75 1.25 Vanadium 0.75 1.25 Iron - 0.30 Oxyge
15、n (3.1.1.1, 3.1.3) - 0.12 Carbon (3.1.1.1) - 0.08 Nitrogen (3.1.1.1) - 0.05 (500 ppm) Hydrogen (3.1.1.1) - 0.01 (100 ppm) Yttrium (3.1.1.2) - 0.005 ( 50 ppm) Residual Elements, each (3.1.1.2) - 0.10 Residual Elements, total (3.1.1.2) - 0.40 Titanium remainder 3.1.1 Except for carbon, hydrogen, nitro
16、gen, and oxygen, chemical analysis of initial ingot, bar, or rod stock before drawing is acceptable provided the processes used for drawing or rolling, annealing, and cleaning are controlled to ensure continued conformance to chemical composition requirements. 3.1.1.1 Carbon, hydrogen, nitrogen, and
17、 oxygen shall be determined on each lot of finished wire (see 4.2.1). 3.1.1.2 Determination not required for routine acceptance. SAE INTERNATIONAL AMS4955H Page 3 of 7 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS2249. 3.1.3 When ASTM E1409 is used, sample
18、 sizes larger than those recommended may be used. 3.2 Melting Practice Alloy shall be multiple melted. Melting cycle(s) prior to final melting cycle shall be made using vacuum consumable electrode, nonconsumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice(s). The
19、 final melting cycle shall be made under vacuum using vacuum arc remelting (VAR) practice with no alloy additions permitted. 3.2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be argon and/or helium at an absolute pressure not higher than 1000 mm of mercury. 3.2.2 The
20、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 in machine welding equipment. 3.4 Fabrication 3.4.1 Wire shall be formed from rod or bar descale
21、d by a process that does not affect the composition of the wire. Surface irregularities inherent with a forming process that does not tear the wire surface are acceptable provided the wire conforms to the tolerances of 3.7. 3.4.2 Unless the contaminated surface is subsequently removed mechanically o
22、r chemically, any in-process annealing between cold rolling or drawing operations shall be performed after cleaning the material. Annealing shall be performed in a protective atmosphere to avoid surface oxidation and adsorption of other extraneous material. 3.4.3 Butt welding is permissible provided
23、 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 the wire processing station. The butt weld shall not interfere with uniform, uninterrupted feeding of the wire
24、 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 cause gas absorption by the wire or deposition of substances harmful to welding operations. 3.4.5 Surface contaminants
25、 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 metal, shall be removed. SAE INTERNATIONAL AMS4955H Page 4 of 7 3.5 Properties Wire shall conform to the following requirements:
26、3.5.1 Weldability 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, 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,
27、 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 begin) shall be identified so it can be located readily and shall be fastened to avoid unwinding. The winding s
28、hall 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 loop with a 1 inch (25 mm) overlap, when cut from the spool and laid on a flat surface, shall form a circle (cas
29、t) 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 separation not greater than shown in Table 2. Table 2A - Cast and helix requirements - inch-pound units Spool Diamete
30、r 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 Millimeters min max max 102 64 229 13 203 254 508 19 305 381 762 25 SAE INTERNATIONAL AMS4955H Page 5 of 7 3.6 Qua
31、lity 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. 3.7 Size and Tolerances Wire shall be supplied i
32、n the 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. Table 3A - Sizes and diameter tolerances, inch/pound units Form Nominal Diameter Inch Tolerance, Inch Plus Tolerance, Inch Minus Cut Lengths 0.030, 0.035, 0.045, 0.062, 0.078 0.002 0.002 Cut Leng
33、ths 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 diameter tolerances, SI units Form Nominal Diameter Millimeters Tolerance, mm Plus Tolerance, mm Minus Cut Len
34、gths 0.76, 0.89, 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, 2.39 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
35、ordered, and 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 RIZLUHVKDOOVXSSODOOVDPSOHVIRUSURGXFHUVWHVWVDQGVKDOOEHUHVSRQVLEO HIRUWKHSHUIRUPDQFHRIDOOUHTXLUHGtests. Purchaser reserves the right
36、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), sizes and tolerances (3.7), and alloy verification (5.2) are acceptance tests and shall be performed on
37、 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 is specified by purchaser. SAE INTERNATIONAL AMS4955H Page 6 of 7 4.3 Sampling
38、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 sample from each heat, except that for carbon, oxygen, nitrogen, and hydrogen, one s
39、ample from each lot at finished diameter, obtained after thermal and chemical processing is completed. 4.3.1.2 Requirements Shall be in accordance with AMS2368. 4.4 Reports The producer shall furnish with each shipment a report showing the producer identity, country where the metal was melted (i.e.,
40、 final melt in the case of metal processed by multiple melting operations), the results of tests for composition of each heat and for the carbon, oxygen, nitrogen, and hydrogen content of each lot, and state that the wire conforms to the other technical requirements. This report shall include the pu
41、rchase order number, heat and lot numbers, AMS4955H, nominal size, and quantity. 4.5 Resampling and Retesting If any specimen 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 nonc
42、onforming specimen. Failure of any retest specimen to meet specified requirements shall be cause for rejection of the wire represented. 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 c
43、ut 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. 5.2 Alloy Verification Wire on each spool of package of cut lengths shall be alloy verified by a method acceptable to purchaser. The alloy verification procedures of
44、 ARP4926 are recommended. 5.2.1 An 8 inch (203 mm) length of wire shall be accessible at both ends of each spool for alloy verification. 5.3 Identification Shall be in accordance with AMS2816 unless AMS2819 or another method is specified by purchaser. 5.4 Packaging and Marking Shall be by standard m
45、ethod in accordance with AMS2813 unless premium quality method in accordance with AMS2814 or other method is specified by purchaser. 6. ACKNOWLEDGMENT A producer shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Wi
46、re not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS4955H Page 7 of 7 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical
47、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 cont
48、ain editorial changes only. 8.2 Terms used in AMS are clarified in 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. 8.4 Purchase documents should specify not less than the foll
