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/AMS6456E AEROSPACE MATERIAL SPECIFICATION AMS6456 REV. E Issued 1984-10 Revised 2017-10 Superse
5、ding AMS6456D Steel, Welding Wire 0.80Cr - 1.8Ni - 0.25Mo (0.35 - 0.40C) (SAE 4340 Mod) Vacuum Melted, Environment-Controlled Packaging (Composition similar to UNS G43370) RATIONALE AMS6456E results from a Five-Year Review and update of this specification that revises hydrogen to be determined in th
6、e wire (3.1.1.1), revises fabrication (3.4), adds winding requirement (3.5.2.3), changes weld examination to ASTM E1032 (4.3.1), and revises testing requirements (4.2). Type 2 copper coated wire was removed from this document. 1. SCOPE 1.1 Form This specification covers a low-alloy steel in the form
7、 of welding wire. 1.2 Application This wire has been used typically as filler metal for gas-metal-arc or gas-tungsten-arc welding of critical weldments of low-alloy steels requiring a joint capable of being heat treated to a strength level approximating that of the basis metal, but usage is not limi
8、ted 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. The supplier may work to a subsequent revision of a document unless a specific document issue is speci
9、fied. 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 International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Can
10、ada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2259 Chemical Check Analysis Limits Wrought Low-Alloy and Carbon Steels AMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging Stock AMS2813 Packaging and Marking of Packages of Welding Wire Stand
11、ard Method AMS2814 Packaging and Marking of Packages of Welding Wire Premium Quality SAE INTERNATIONAL AMS6456E Page 2 of 6 AMS2816 Identification Welding Wire, Tab Marking Method AMS2819 Identification, Welding Wire Direct Color Code System AMS6359 Steel, Sheet, Strip, and Plate 0.80Cr - 1.8Ni - 0.
12、25Mo (0.38 - 0.43C) (SAE 4340) ARP1876 Weldability Test for Weld Filler Metal Wire ARP1917 Clarification of Terms Used in Aerospace Metals Specifications ARP4926 Alloy Verification and Chemical Composition Inspection of Welding Wire 2.2 ASTM Publications Available from ASTM International, 100 Barr H
13、arbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM A370 Mechanical Testing of Steel Products ASTM D2650 Chemical Composition of Gases by Mass Spectrometry ASTM E350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Ir
14、on, and Wrought Iron ASTM E1032 Radiographic Examination of Weldments 3. TECHNICAL REQUIREMENTS 3.1 Wire Composition Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E350, by spectrochemical methods, or by other analytical method
15、s acceptable to purchaser. Table 1 - Composition Element Min Max Carbon (3.1.1.1) 0.35 0.40 Manganese 0.60 0.90 Silicon 0.15 0.35 Phosphorus - 0.008 Sulfur - 0.008 Chromium 0.70 0.90 Nickel 1.65 2.00 Molybdenum 0.20 0.30 Copper - 0.30 Oxygen (3.1.1.1) - 0.0100 (100 ppm) Nitrogen (3.1.1.1) - 0.0050 (
16、 50 ppm) Hydrogen (3.1.1.1) - 0.0010 ( 10 ppm) 3.1.1 Chemical analysis of initial ingot, bar, or rod stock before drawing, other than when analyses are required to be performed on the finished wire, is acceptable provided processes used for drawing or rolling, annealing, and cleaning are controlled
17、to ensure continued conformance to composition requirements. 3.1.1.1 Hydrogen shall be determined on each lot of finished wire (see 4.2.1) in accordance with ASTM D2650. Carbon, oxygen, and nitrogen shall be periodically determined on finished wire (see 4.2.2). 3.1.2 Check Analysis Composition varia
18、tions shall meet the applicable requirements of AMS2259. No variation over maximum is permitted for oxygen, nitrogen and hydrogen. SAE INTERNATIONAL AMS6456E Page 3 of 6 3.2 Melting Practice Steel shall be either vacuum induction melted or consumable electrode vacuum remelted. 3.3 Condition Cold wor
19、ked, 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 descaled by a process which does not affect the composition of the wire. Surface irregularities inherent wit
20、h a forming process that do 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 in vacuum or in protective atmosphere to avoid surface oxidation and absorp
21、tion of other extraneous elements. 3.4.3 Butt welding is permissible only at diameters larger than final 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 a
22、t the wire processing station. The butt weld shall not interfere with 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 cause
23、gas absorption by the wire or deposition of substances harmful to welding operations. 3.4.5 Residual elements, drawing compounds, oxides, dirt, oil, dissolved gases and other foreign materials picked up during wire processing that can adversely affect the welding characteristics, the operation of th
24、e equipment, or the properties of the weld metal, shall be removed by cleaning processes that will neither result in pitting nor cause gas adsorption by the wire or deposition of substances harmful to the welding operations 3.5 Properties Wire shall conform to the following requirements: 3.5.1 Welda
25、bility Melted wire shall flow smoothly and evenly during welding and shall produce acceptable welds. ARP1876 may be used to resolve weldability 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 Cast Wire, wound on standard 12 inch (305 mm) diameter spools, shall hav
26、e 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 15 to 50 inches (381 to 1270 mm) in diameter. 3.5.2.2 Helix The specimen on which cast was determined, when l
27、aid on a flat surface and measured between adjacent turns, shall show a vertical separation not greater than 1 inch (25 mm). SAE INTERNATIONAL AMS6456E Page 4 of 6 3.5.2.3 Winding Filler metal in coils and on spools shall be wound so that kinks, waves, sharp bends, overlapping, or wedging are not en
28、countered, 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 on spools shall be level winding. 3.5.3 Tensile Properti
29、es When specified, specimens, prepared in accordance with 4.3.1 and tested in accordance with ASTM A370, shall have average tensile strength not lower than 90% of the average of the control specimens of 4.3.1; elongation of the welded specimens shall be not less than 6% in 2 inches (50.8 mm). 3.6 Qu
30、ality 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. 3.6.1 Surface irregularities inherent with a fo
31、rming process that does not tear the wire surface are acceptable provided the wire conforms to the tolerances of 3.7. 3.7 Sizes and Tolerances Wire shall be supplied in 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 2. Table 2 Table 2A - Sizes and
32、 diameter tolerances, inch/pound units Form Nominal Diameter Inch Tolerance Inch Plus and Minus Cut Lengths 0.030, 0.035, 0.045 0.001 Cut Lengths 0.062, 0.078, 0.094, 0.125 0.002 Spools 0.007, 0.010, 0.015 0.0005 Spools 0.020, 0.030, 0.035, 0.045 0.001 Spools 0.062, 0.078, 0.094 0.002 Table 2B - Siz
33、es and diameter tolerances, SI units Form Nominal Diameter Millimeters Tolerance Millimeter Plus and Minus Cut Lengths 0.76, 0.89, 1.14 0.025 Cut Lengths 1.57, 1.98, 2.39, 3.18 0.05 Spools 0.18, 0.25, 0.38 0.013 Spools 0.51, 0.76, 0.89, 1.14 0.025 Spools 1.57, 1.98, 2.39 0.05 3.7.2 Length Cut length
34、s shall be furnished in 18, 27, or 36 inch (457, 686, or 914 mm) lengths, as ordered, and shall not vary more than +0, -0.5 inch (+0, -13 mm) from the length ordered. SAE INTERNATIONAL AMS6456E Page 5 of 6 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of wire shall s
35、upply 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 Acce
36、ptance Tests Composition (3.1.1), including hydrogen (3.1.1.1), tensile properties, when specified (3.5.3), 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 Determination of carbon, oxygen, an
37、d nitrogen (3.1.1.1), weldability (3.5.1), cast (3.5.2.1), and helix (3.5.2.2) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2370 and as specified herein
38、. 4.3.1 Tensile Specimens Shall be obtained from a single-vee-groove, butt-joint weld made between two pieces of AMS6359 plate, 0.250 inch (6.35 mm) in nominal thickness, chamfered full depth to a 60 included angle; the weld shall be perpendicular to the longitudinal grain direction of the test piec
39、es. Test pieces, prior to machining the tensile specimens, shall be heat treated to a tensile strength not lower than 180 ksi (1241 MPa). After heat treatment, the weld metal shall be finished flush with the parent metal on both faces and standard sheet-type rectangular specimens shall be prepared i
40、n accordance with ASTM A370, with the weld in the approximate center of the gage length. The weld in the specimens, prior to tensile testing, shall be free from defects detrimental to tensile properties of the weld, determined in accordance with ASTM E1032. Three control, standard sheet-type, rectan
41、gular tensile specimens shall be machined from 0.250 inch (6.35 mm) AMS6359 steel plate of the same heat as that used for the welded specimens, heat treated with the welded specimens, and tested for comparative tensile properties in accordance with ASTM A370. 4.4 Reports The producer of wire shall f
42、urnish with each shipment a report showing the results of tests for composition of each heat and stating that the wire conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS6456E, product form, type, nominal size, and quantity. 4.
43、5 Resampling and Retesting Shall be in accordance with AMS2370. 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 th
44、e same heat of steel. 5.2 Alloy Verification 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. 5.2.1 An 8 inch (203 mm) length of wire shall be made accessible at both ends of each
45、 spool for alloy verification. SAE INTERNATIONAL AMS6456E Page 6 of 6 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 in accordance with AMS2814 unless AMS2813 or another method is specified by purc
46、haser. 6. ACKNOWLEDGMENT A producer shall mention 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
47、.1 Revision Indicator 8.2 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 rev
48、ision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.3 Wire not properly stored after opening of the package may absorb gaseous elements and corrosion (rusting) may occur on the surfac
49、e of the wire. 8.4 Terms used in AMS are clarified in ARP1917. 8.5 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. 8.6 Purchase documents should specify not less than the following: AMS6456E Size and form (spools or cut le
