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/AMS4779J AEROSPACE MATERIAL SPECIFICATION AMS4779 REV. J Issued 1960-06 Reaffirmed 2012-02 Revi
5、sed 2017-04 Superseding AMS4779H Nickel Alloy, Brazing Filler Metal 94Ni - 3.5Si - 1.8B 1800 F (982 C) Solidus, 1950 F (1066 C) Liquidus (Composition similar to UNS N99640) RATIONALE AMS4779J results from a limited scope ballot to correct the alloy designation (3.1). 1. SCOPE 1.1 Form This specifica
6、tion covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder. 1.2 Application This filter metal has been used typically for joining corrosion and heat-resistant steels and alloys requiring corrosion and oxidation resist
7、ant joints with good strength at elevated temperatures, but usage is not limited to such applications. This filler metal has also been used as a corrosion and oxidation resistant hard coating. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or ref
8、erenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary p
9、recautionary measures to ensure the health and safety of all personnel involved. SAE INTERNATIONAL AMS4779 J Page 2 of 5 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 sup
10、plier 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. 2.1 SAE Publications Available from SAE Internat
11、ional, 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. ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.
12、O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ASTM E140 Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Kn
13、oop Hardness, Scleroscope Hardness, and Leeb Hardness 2.3 AWS Publications Available from American Welding Society, 8669 NW 36 Street, #130, Miami, FL 33166-6672, Tel: 1-800-443-9353 or 305-443-9353, www.aws.org. AWS A5.01 Welding Consumables - Procurement of Filler Metals and Fluxes AWS A5.8 Specif
14、ication for Filler Metals for Brazing and Braze Welding 3. TECHNICAL REQUIREMENTS 3.1 Product shall meet the requirements of AWS A5.8 BNi-4 and the following: 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Wire and Strip Powder bonded in a suitable binder. 3.2.2 Rod As
15、 cast, with fins and projections removed. 3.2.3 Foil and Powder As fabricated. 3.2.4 Paste Shall consist of 84 to 90% by weight powder in a suitable binder and, unless otherwise ordered, shall not contain flux. SAE INTERNATIONAL AMS4779 J Page 3 of 5 3.3 Properties Filler metal shall conform to the
16、following requirements: 3.3.1 Wire and Strip 3.3.1.1 Burn-Off of Binder The binder used for bonding powder to form wire and strip shall burn off, leaving no adherent residue, when the product is heated to 1000 F (538 C), or higher. 3.3.2 Paste 3.3.2.1 Paste shall have a shelf life of not less than 6
17、 months; not more than thorough mixing shall be required to restore paste for use during that time. 3.3.3 When used as a hard coating, alloy shall melt quickly and shall flow freely under neutral oxyacetylene flame, without bubbling or boiling, to produce an adherent deposit free from porosity due t
18、o blow-holes, gas cavities, or slag inclusions. 3.3.3.1 Alloy, deposited as in 3.3.3, shall have hardness not lower than 20 HRC, or equivalent (see 8.3), determined in accordance with ASTM E18. 3.4 Quality The product, as received by purchaser, shall be uniform in color, quality, and condition and f
19、ree from foreign materials and from imperfections detrimental to its working qualities. Rod and powder shall have a metallic luster. Wire, strip, and foil shall be clean, sound, smooth, and free from ragged edges, splitting, damaged ends, and other imperfections detrimental to usage of the product.
20、3.4.1 Powder 3.4.1.1 Mesh Designation Shall be 140F. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample a
21、nd to perform any confirmatory testing deemed necessary to 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 (3.3.2.1) and hard coating characteristics (3.3.3 and 3.3.3.1), are acc
22、eptance tests and shall be performed on each lot. 4.2.2 Periodic Tests Shelf life of paste (3.3.2.1) and hard coating characteristics (3.3.3 and 3.3.3.1) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. SAE INTER
23、NATIONAL AMS4779 J Page 4 of 5 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 except that powder produced from consecutive furnace charges and collected together, without teardown of the atomizing equipment, sh
24、all constitute a batch, from which one sample shall be taken. 4.3.2 Properties Except Shelf Life of Paste One sample from each lot. 4.3.2.1 A lot shall be all product, other than powder or paste, as defined by AWS A5.01 Class S3. 4.3.2.2 A lot of powder shall be a uniform blend of powder produced fr
25、om one or more furnace charges, except as modified by 4.3.1, each meeting the composition requirements of this specification, and presented for producers inspection at one time. 4.3.2.3 A lot of paste shall be that paste produced from a single lot of powder, combined with binder from the same manufa
26、cturing batch, and presented for producers inspection at one time. 4.4 Reports The producer of the product shall furnish with each shipment a report showing the producers name and the country where melted (e.g., final melt in the case of metal processed by multiple melting operations), the compositi
27、on of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, lot number or numbers, AMS4779J, form, size, and quantity. 4.5 Resampling and Retesting Not applicable. 5. PREPARATION FOR DELIVERY 5.1 Identification 5.1.1
28、 Shall be as agreed upon by purchaser and producer. 5.1.2 Each exterior container or package shall be permanently and legibly marked with not less than the following information: Nickel alloy, brazing filler metal AMS4779J Lot number Manufacturers identification Product form Nominal dimensions Weigh
29、t 5.1.2.1 Each container and package of paste shall also be marked with the date of manufacture. SAE INTERNATIONAL AMS4779 J Page 5 of 5 5.2 Packaging 5.2.1 The product shall be suitably wrapped, sealed, and boxed or otherwise packaged for protection against injury and contamination during shipment
30、and under normal dry storage conditions. 5.2.2 Packages of filter metal shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the filler metal to ensure carrier accept
31、ance and safe delivery. 6. ACKNOWLEDGMENT A producer 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, or to modifications authorized by purchaser, will be subject
32、 to rejection. 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 revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title ind
33、icates 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 solidus temperature of 1800 F (982 C) and an approximate liquidus tempe
34、rature of 1950 F (1066 C). 8.3 Hardness conversion tables for metals are presented in ASTM E140. 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 temper
35、atures are shown as the approximate equivalents of the primary units and are presented only for information. 8.6 Similar Specification AWS A5.8, Classification BNi-4 is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met. 8.7 Purchase documents should specify not less than the following: AMS4779J Form and size of filler metal desired Quantity of filler metal desired PREPARED BY AMS COMMITTEE “F”
