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 2011 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/AMS6456D AEROSPACE MATERIAL SPECIFICATION AMS 6456 REV. D Issued 1984-10 Revised
5、2007-02 Reaffirmed 2011-11 Superseding AMS 6456C Steel, Welding Wire 0.80Cr - 1.8Ni - 0.25Mo (0.35 - 0.40C) (SAE 4340 Mod) Vacuum Melted, Environment-Controlled Packaging RATIONALE This document has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification
6、covers a low-alloy steel in the form 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 th
7、e basis metal, but usage is not limited to such applications. 1.3 Classification Wire shall be classified as follows: Type 1 - Bare Wire Type 2 - Copper Coated 1.3.1 Type 1 shall be supplied unless Type 2 is specified. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the dat
8、e 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 document has been specified, the l
9、ast published issue of that document shall apply. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 6456D Page 2 of 6 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (i
10、nside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon Steels AMS 2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging Stock AMS 2813 Packaging and Marking of Packages of
11、Welding Wire, Standard Method AMS 2814 Packaging and Marking of Packages of Welding Wire, Premium Quality AMS 2816 Identification, Welding Wire, Tab Marking Method AMS 2819 Identification, Welding Wire, Direct Color Code System AMS 6359 Steel Sheet, Strip, and Plate, 0.80Cr - 1.8Ni - 0.25Mo (0.38 -
12、0.43C) (SAE 4340) 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, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www
13、.astm.org. ASTM A 370 Mechanical Testing of Steel Products ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron ASTM E 1742 Radiographic Examination 3. TECHNICAL REQUIREMENTS 3.1 Wire Composition Shall conform to the percentages by wei
14、ght shown in Table 1, determined by wet chemical methods in accordance with ASTM E 350, by spectrochemical methods, or by other analytical methods 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
15、 - 0.008 Chromium 0.70 0.90 Nickel 1.65 2.00 Molybdenum 0.20 0.30 Copper (3.1.1.2) - 0.30 Oxygen (3.1.1.1) - 0.0100 (100 ppm)Nitrogen (3.1.1.1) - 0.0050 ( 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 is acceptable provided pro
16、cesses 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 periodically determined on finished wire (See 4.2.2). 3.1.1.2 For Type 2 (copper coated) wire, copper s
17、hall also be periodically determined on finished wire (See 4.2.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 6456D Page 3 of 6 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS 2259. No variation
18、over maximum is permitted for oxygen, nitrogen, and hydrogen. 3.2 Melting Practice Steel shall be either vacuum induction melted or consumable electrode vacuum remelted. 3.3 Condition Cold worked, bright finish, in a temper and with a surface finish that will provide proper feeding of the wire in ma
19、chine 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. 3.4.2 In process annealing, if required between cold rolling or drawing operations, shall be performed in vacuum or in protective atmosphere to
20、avoid surface oxidation and absorption of other extraneous elements. 3.4.3 Butt welding is permissible 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
21、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 ga
22、s absorption by the wire or deposition of substances harmful to welding operations. 3.4.5 Residual elements and dissolved gases deposited on, or absorbed by, the welding wire as a result of cleaning or cold working operations shall be removed by vacuum degassing. 3.4.6 When Type 2, copper coated, wi
23、re is specified, the copper coating shall be clean, bright, and uniform in appearance. A maximum of four discontinuities in any 36-inch (914-mm) length are acceptable provided the exposed wire is clean and bright. The maximum allowable discontinuity size shall be 0.25 inch (6.4 mm) in length. The th
24、ickness of the copper coating shall not exceed 0.0005 inch (0.0127 mm) on the diameter. 3.5 Properties Wire shall conform to the following requirements: 3.5.1 Weldability Melted wire shall flow smoothly and evenly during welding and shall produce acceptable welds. ARP1876 may be used to resolve weld
25、ability disputes. 3.5.2 Spooled Wire Shall conform to 3.5.2.1 and 3.5.2.2. 3.5.2.1 Cast Wire, wound on standard 12-inch (305-mm) diameter spools, 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 an
26、d laid on a flat surface, shall form a circle 15 to 50 inches (381 to 1270 mm) in diameter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 6456D Page 4 of 6 3.5.2.2 Helix The specimen on which cast was determined, when laid on a flat surface
27、 and measured between adjacent turns, shall show a vertical separation not greater than 1 inch (25 mm). 3.5.3 Tensile Properties When specified, specimens, prepared in accordance with 4.3.1 and tested in accordance with ASTM A 370, shall have average tensile strength not lower than 90% of the averag
28、e 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 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 operati
29、ons, operation of welding equipment, or properties of the deposited weld metal. 3.6.1 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. 3.7 Sizes and Tolerances Wire shall be supplied in the
30、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 2A - SIZES AND 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 Sp
31、ools 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 - SIZES 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
32、 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 lengths 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. Provided by IH
33、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 6456D Page 5 of 6 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of wire shall supply all samples for vendors tests and shall be responsible for the performance of all required t
34、ests. 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 (3.1.1), tensile properties, when specified (3.5.3), sizes and tolerances (
35、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, hydrogen, oxygen, and nitrogen (3.1.1.1), determination of copper (if Type 2) on finished wire (3.1.1.2), weldability (3.5.1), cast (3.5.2.1
36、), and helix (3.5.2.2) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS 2370 and as specified herein. 4.3.1 Tensile Specimens Shall be obtained from a single
37、-vee-groove, butt-joint weld made between two pieces of AMS 6359 plate, 0.250 inch (6.35 mm) in nominal thickness, chamfered full depth to a 60-degree included angle; the weld shall be perpendicular to the longitudinal grain direction of the test pieces. Test pieces, prior to machining the tensile s
38、pecimens, 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 in accordance with ASTM A 370, with the weld in th
39、e 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 E 1742. Three control, standard sheet-type, rectangular tensile specimens shall be machined from
40、0.250 inch (6.35 mm) AMS 6359 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 A 370. 4.4 Reports The vendor of wire shall furnish with each shipment a report showing the
41、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, AMS 6456D, product form, type, nominal size, and quantity. 4.5 Resampling and Retesting Shall be in accorda
42、nce with AMS 2370. 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 heat of steel. 5.2 Alloy Verification
43、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. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 6456D Page 6 of 6 5.2.1
44、An 8-inch (203-mm) length of wire shall be made accessible at both ends of each spool for alloy verification. 5.3 Identification Shall be in accordance with AMS 2816 unless AMS 2819 or another method is specified by purchaser. 5.4 Packaging and Marking Shall be in accordance with AMS 2814 unless AMS
45、 2813 or another method is specified by purchaser. 6. ACKNOWLEDGMENT A vendor 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
46、, will be subject to rejection. 8. NOTES 8.1 A change bar (|) 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 a specification. An (R) symbol to the left of the document title ind
47、icates a complete revision of the specification. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only. 8.2 Wire not properly stored after opening of the package may absorb gaseous elements and corrosion (rusting) may occur on the surfac
48、e of the wire. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 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. 8.5 Purchase documents should specify not less than the following: AMS 6456D Size and form (spools or cut lengths) of wire desired Lengths of cut lengths or weight of spools desired Type 2, if copper coating is required Quantity of wire desired If tensile testing is re
