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 2012 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/AMS4784G AEROSPACE MATERIAL SPECIFICATION AMS4784 REV. G Issued 1968-11 Revised 2
5、012-06 Superseding AMS4784F Gold-Palladium-Nickel Alloy, Brazing Filler Metal, High Temperature 50Au - 25Pd - 25Ni 2015 to 2050 F (1102 to 1121 C) Solidus-Liquidus Range (Composition similar to UNS P00500) RATIONALE AMS4784G results from a Five Year Review and update of this specification. Metric eq
6、uivalents sieve sizes were incorporated in Table 5B. 1. SCOPE 1.1 Form This specification covers a gold-palladium-nickel alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, chips, preforms, and a viscous mixture (paste) of the powder in a suitable binder. 1.2 Application This fill
7、er metal has been used typically for joining corrosion and heat-resistant steels and alloys where corrosion and oxidation-resistant joints with good strength at elevated temperatures are required, but usage is not limited to such applications. 1.3 Classifications Filler metal supplied to this specif
8、ication is classified as follows: Class 1 Standard composition Class 2 Supplementary composition control Where no class is specified, Class 1 shall apply. 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 th
9、e 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 AMS4784G P
10、age 2 of 9 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2222 Tolerances, Copper and Copper Alloy Sheet, Strip, and Plate AMS2224 Tolerances, Copper an
11、d Copper Alloy 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 B 214 Sieve Analysis of Granular Metal Powders 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the per
12、centages by weight shown in Table 1, determined by spectrochemical methods or other analytical methods acceptable to purchaser (See 8.3). TABLE 1 - COMPOSITION Element min max Gold 49.50 50.50 Palladium 24.50 25.50 Nickel 24.50 25.50 Other Elements, total (3.1.1) - 0.15 3.1.1 Determination not requi
13、red for routine acceptance. 3.1.2 For Class 2, copper shall be limited to 0.06% maximum, carbon to 0.005% maximum, and the following elements shall be limited to 0.002% maximum each; aluminum, cadmium, lead, magnesium, phosphorus, silicon, and zinc. The total of these elements shall not exceed 0.05%
14、 maximum. 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Wire Clean and bright. Annealed temper, unless otherwise specified. 3.2.2 Rod As fabricated, and cleaned. SAE AMS4784G Page 3 of 9 3.2.3 Sheet, Strip, and Foil Cold rolled and annealed unless otherwise specified.
15、 3.2.4 Pig, Powder, Shot, and Chips As fabricated. 3.2.5 Paste Unless otherwise specified by the purchaser, shall consist of 84 to 90% by weight powder in a suitable binder and shall not contain flux. 3.2.6 Preforms As fabricated. 3.3 Properties Filler metal shall conform to the following requiremen
16、ts: 3.3.1 Color Shall be yellow-white. 3.3.2 Flatness When unrolled, strip and foil shall lie flat with no undue tendency to re-coil. 3.3.3 Paste 3.3.3.1 Paste shall have a shelf life of not less than 6 months from date of manufacture; not more than thorough mixing shall be required to restore paste
17、 for use during that time. 3.3.3.2 Paste without flux shall leave no adherent residue when heated in a protective atmosphere to a temperature higher than 1000 F (538 C). 3.4 Quality The product, as received by purchaser, shall be uniform in color, quality, and condition and free from foreign materia
18、ls and from imperfections detrimental to its working qualities. Wire, rod, sheet, strip, and foil shall be clean, sound, bright, and free from slivers, splitting, ragged edges, damaged ends, and other injurious imperfections. Pig, powder, shot, and chips shall have a metallic luster. 3.5 Sizes and T
19、olerances The product shall be supplied in the following standard sizes and to the tolerances shown. 3.5.1 Wire and Rod SAE AMS4784G Page 4 of 9 3.5.1.1 Nominal Diameters Shall be as shown in Table 2. TABLE 2 - STANDARD DIAMETER SIZES Inch Millimeters 0.005 0.13 0.007 0.18 0.010 0.25 0.015 0.38 0.02
20、5 0.64 0.031 0.79 0.040 1.02 0.047 1.19 0.062 1.57 0.094 2.39 0.125 3.18 0.175 4.44 0.188 4.78 0.225 5.72 0.250 6.35 3.5.1.2 Diameter Tolerances for Drawn Wire and Rod Shall be in accordance with AMS2224 as applicable to refractory alloys. 3.5.1.3 Diameter Tolerances for Rolled or Extruded Wire and
21、Rod Shall be as shown in Table 3. TABLE 3A - DIAMETER TOLERANCES, INCH/POUND UNITS Nominal Diameter or Distance Between Parallel Sides Inch Tolerances, Inch Plus and Minus Rounds Tolerances, Inch Plus and Minus Squares 0.031 to 0.062, incl 0.005 0.008 Over 0.062 to 0.125, incl 0.006 0.009 Over 0.125
22、 to 0.188, incl 0.007 0.009 Over 0.188 to 0.250, incl 0.008 0.010 SAE AMS4784G Page 5 of 9 TABLE 3B - DIAMETER TOLERANCES, SI UNITS Nominal Diameter or Distance Between Parallel Sides Millimeters Tolerances, Millimeter Plus and Minus Rounds Tolerances, Millimeter Plus and Minus Squares 0.79 to 1.57,
23、 incl 0.13 0.20 Over 1.57 to 3.18, incl 0.15 0.23 Over 3.18 to 4.78, incl 0.18 0.23 Over 4.78 to 6.35, incl 0.20 0.25 3.5.2 Sheet, Strip, and Foil 3.5.2.1 Nominal Thicknesses Shall be as shown in Table 4. TABLE 4 - STANDARD THICKNESSES Inch Millimeter 0.001 0.025 0.0015 0.038 0.002 0.05 0.003 0.08 0
24、.004 0.10 0.005 0.13 0.006 0.15 0.008 0.20 0.010 0.25 0.014 0.36 0.020 0.51 0.030 0.76 3.5.2.2 Tolerances 3.5.2.2.1 Thickness Nominal thicknesses under 0.002 inch (0.05 mm) shall have a tolerance of 0.0002 inch (5 m); nominal thicknesses 0.002 inch (0.05 mm) and over shall have tolerances conforming
25、 to AMS2222 as applicable to refractory alloys. 3.5.2.2.2 Width of Individual Rolls Nominal widths under 6 inches (152 mm) shall vary not more than 0.010 inch (0.25 mm) from the width ordered. Nominal widths 6 inches (152 mm) and over shall vary not more than 0.015 inch (0.38 mm) from the width orde
26、red. 3.5.2.2.3 Length in Individual Roll Shall not be limited except that no roll shall weigh more than 75 pounds (34 kg). SAE AMS4784G Page 6 of 9 3.5.3 Powder 3.5.3.1 Mesh Designations 60 (250 m), 100 (150 m), 140 C or F (106 m C or F), 200 (75 m), and 325 (45 m). When a mesh designation is not sp
27、ecified, 140F (106F) shall be supplied. 3.5.3.2 Powder shall be supplied in accordance with the limits on particle size distribution shown in Table 5, unless some other distribution is specified. Tests shall be in accordance with ASTM B 214. TABLE 5A - PARTICLE SIZE DISTRIBUTION U.S.Mesh Designation
28、 U.S. Standard Sieve No. Distribution % 60 Through a 40 Through a 60 Through a 325 100 95 min. 10 max. 100 Through a 60 Through a 100 Through a 325 100 95 min. 15 max. 140C On a 100 On a 140 Through a 325 0.5 max. 10 max. 20 max. 140F On a 100 On a 140 Through a 325 0.5 max. 10 max. 55 max. 200 On a
29、 140 On a 200 Through a 325 0.5 max. 10 max. 65 max. 325 On a 200 On a 325 Through a 325 0.5 max. 10 max. 90 min. SAE AMS4784G Page 7 of 9 TABLE 5B PARTICLE SIZE DISTRIBUTION (METRIC) m Mesh Designation Sieve Opening m Distribution % 250 Through a 425 Through a 250 Through a 45 100 95 min. 10 max. 1
30、50 Through a 250 Through a 150 Through a 45 100 95 min. 15 max. 106C On a 150 On a 106 Through a 45 0.5 max. 10 max. 20 max. 106F On a 150 On a 106 Through a 45 0.5 max. 10 max. 55 max. 75 On a 106 On a 75 Through a 45 0.5 max. 10 max. 65 max. 45 On a 75 On a 45 Through a 45 0.5 max. 10 max 90 min 4
31、. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors 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
32、 ensure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests All technical requirements, other than shelf life of paste (3.3.3.1), are acceptance tests and shall be performed on each lot. 4.2.2 Periodic Tests Shelf life of paste (3.3.3.1) is a perio
33、dic test 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 the following: 4.3.1 Composition One sample shall be taken from each furnace charge. SAE AMS4784G Page 8 of 9 4.3.2 Proper
34、ties Except Shelf Life of Paste One sample from each lot. 4.3.3 A lot shall be all product, other than powder or paste, which has been tested and found to conform to 3.1, in the same temper and size, and presented for vendors inspection at one time. 4.3.4 A lot of powder shall be a uniform blend of
35、powder produced from one or more furnace charges, each meeting the requirements of 3.1, and presented for vendors inspection at one time. 4.3.5 A lot of paste shall be that paste produced from a single lot of powder combined with binder from the same manufacturing batch and presented for vendors ins
36、pection at one time. 4.4 Reports The vendor of the product shall furnish with each shipment a report showing the results of tests to determine conformance to the composition requirements and stating that the product conforms to the other technical requirements. This report shall include the purchase
37、 order number, lot number or numbers, AMS4784G, form, size, and quantity. 4.5 Resampling and Retesting Not applicable. 5. PREPARATION FOR DELIVERY 5.1 Identification 5.1.1 Shall be as agreed upon by purchaser and vendor. 5.1.2 Each exterior container or package shall be permanently and legibly marke
38、d with not less than AMS4784G, lot number, form, manufacturers identification, nominal sizes, and weight. 5.1.2.1 Each container and package of paste shall also be marked with the date of manufacture. 5.2 Packaging 5.2.1 The product shall be suitably wrapped, sealed, and boxed or otherwise packaged
39、for protection against injury and contamination during shipment and under normal dry storage conditions. 5.2.2 Packages of filler metal shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging,
40、 and transportation of the filler metal to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Filler metal not conforming to this specification
41、, or to modifications authorized by purchaser, will be subject to rejection. SAE AMS4784G Page 9 of 9 8. NOTES 8.1 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 o
42、f 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 changes only. 8.2 This filler metal has an approximate sol
43、idus temperature of 2015 F (1102 C) and an approximate liquidus temperature of 2050 F (1121 C). 8.3 Accepted industry standards for the wet chemical analysis of alloys containing gold with nickel and/or palladium have not been established. 8.4 Terms used in AMS are clarified in ARP1917. 8.5 Dimensio
44、ns 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: AMS4784G Class Form and size of filler metal desired Quantity of filler metal desired. PREPARED BY AMS COMMITTEE “F”
