1、AEROSPACE MATERIAL SPECIFICATIONAMS3412 REV. FIssued 1948-05Revised 2009-07Reaffirmed 2014-07Superseding AMS3412EFlux, Aluminum BrazingFor Torch or Furnace BrazingRATIONALEAMS3412F has been reaffirmed to comply with the SAE five year review policy._SAE Technical Standards Board Rules provide that: “
2、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 therefrom, is the sole responsibility of the user.”SAE rev
3、iews 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 2014 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in a retrieval syst
4、em 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: 724-776-0790Email: CustomerServicesae.
5、orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3412F1 SCO3(1.1 Form This specification covers the requirements for an aluminum brazing flux in the form of powder or paste. 1.2 Application T
6、his flux has been used typically for brazing aluminum and aluminum alloys in accordance with AMS2672 at 1050 F (566 C) and above, but usage is not limited to such applications. 1.3 Classification Flux covered by this specification is classified as follows: Type 1 - Torch Brazing Type 2 - Furnace Bra
7、zing Where a type is not specified, Type 1 shall be supplied. 1.3.1 Form Form 1 Powder Form 2 Paste If no form is specified, Form 1 shall be used. 1.4 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the
8、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 precautionary measures to ensure the health and
9、 safety of all personnel involved. SAE INTERNATIONAL AMS3412F Page 2 of 5 2 APPLICABL(DOCUMENTSThe 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 docum
10、ent 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 International, 400 Commonwealth Drive, Warrendale, PA 1509
11、6-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2672 AMS4184 AMS4185 Brazing, Aluminum, Torch or Furnace Filler Metal, Aluminum Brazing, 10Si - 4Cu, (4145) Filler Metal, Aluminum Brazing, 12Si, (4047) 2.2 ASTM Publications: Available from ASTM Interna
12、tional, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E 11 Wire Cloth and Sieves for Testing Purposes 2.3 AWS Publications Available from American Welding Society, 550 NW LeJeune Road, Miami, FL 33126, Tel: 1-800-443-9353, www.aws.org.
13、AWS A5.31 Specification for Fluxes for Brazing and Braze Welding 3 TECHNICA/REQUIREMENTS3.1 Composition and Form 3.1.1 Form 1 powder flux shall be a finely ground and uniformly blended mixture of ingredients, containing not more than 5% water by weight as determined by the water content test in AWS
14、A5.31. 3.1.1.1 Flux shall not harden in the container. A slight amount of agglomeration is permissible provided the lumps can be readily broken into a powder not coarser than the remainder of the material. 3.1.2 Form 2 flux shall be in paste form, premixed with suitable moisturizing agents and ready
15、 for use with no further additions. 3.1.2.1 Flux shall not harden in the container. A slight amount of agglomeration is permissible provided the lumps will pass through a number 40 sieve in accordance with ASTM E 11 with no more than a slight brushing required. 3.2 Properties Flux shall conform to t
16、he following requirements: 3.2.1 Fluxing Ability Flux shall permit production of satisfactory brazed joints of any type on applicable aluminum alloys, determined in accordance with 3.2.1.2. 3.2.1.1 Form 1 powder flux, mixed with water in the proportions of 3 parts flux to 1 part water by weight, wit
17、h or without a suitable wetting agent, shall form a smooth paste, free from coarse particles, having acceptable fusibility and application and fluxing characteristics. SAE INTERNATIONAL AMS3412F Page 3 of 5 3.2.1.2 The test sample shall consist of two pieces of suitably cleaned and prepared alloy of
18、 1100 or 3003 aluminum, each approximately 1 x 4 inches (25 x 102 mm), held by tack welding, wiring, or fixturing to create a “T“ configuration with a suitable gap between the two parts. Material thickness may vary from 0.02 to 0.07 inches (0.5 to 1.8 mm). Filler metal shall conform to AMS4184 or AM
19、S4185. 3.2.1.2.1 For Type 1 flux, the specimen and the filler metal shall be liberally coated with flux. It may be necessary to preheat the filler metal to facilitate adhesion of the flux. The filler metal shall be fed into the joint while the specimen is heated with an oxyacetylene torch flame or e
20、quivalent. 3.2.1.2.2 For Type 2 flux, the filler metal shall be preplaced on one side of the 4 inch (102 mm) long joint. Both the specimen and the filler metal shall be liberally coated with flux. The fluxed assembly shall be placed in a preheated air furnace and held at 1100 F 10 (593 C 6) for suff
21、icient time to permit the specimen to achieve braze temperature, but not longer than 3 minutes at temperature. The specimen may be furnace or air cooled. 3.2.1.2.3 After cooling, flux shall be removed in accordance with 3.2.4. The resultant joint shall exhibit a uniform fillet of braze filler metal
22、on both sides of the joint. 3.2.2 Fusion Temperature On heating, flux shall fuse at 1050 F (566 C) or lower; on cooling from 1100 F (593 C) or higher, flux shall remain in the liquid state until the temperature drops to 1050 F (566 C) or lower. 3.2.3 Flame or Smoke Emission 3.2.3.1 Flux shall not pr
23、oduce, during use, a flame or smoke of sufficient intensity to obscure the work. 3.2.3.2 Flux shall not produce toxic or suffocating fumes under normal conditions of use. 3.2.4 After being subjected to brazing operations, flux should be readily removable by water at 190 F (88 C) or hotter. If the fl
24、ux is not completely removed by the hot water, but is removed by immersion for not more than 15 minutes in a 10% solution of nitric acid, to which 0.25% hydrofluoric acid is added, at a temperature not higher than 100 F (38 C), followed by a final hot water rinse, flux is acceptable. 3.3 Quality Flu
25、x, as received by purchaser, shall be uniformly blended and free from foreign materials and contaminants detrimental to usage of the flux. 4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for Inspection The supplier of flux shall supply all samples for suppliers tests and shall be responsible for t
26、he performance of all required tests. The cognizant engineering organization reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the flux conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Preproduction Tests All technical requireme
27、nts are preproduction tests and shall be performed on the initial shipment of flux to a purchaser, when a change in material and/or processing is made, and when the cognizant engineering organization deems confirmatory testing to be required. SAE INTERNATIONAL AMS3412F Page 4 of 5 4.3 Sampling for T
28、esting Sample quantity shall be at the discretion of the supplier, unless otherwise specified by the cognizant engineering organization. 4.4 Reports The supplier of flux shall furnish with each shipment a report stating that the flux conforms to all technical requirements. This report shall include
29、the purchase order number, lot number, AMS3412F, date of manufacture, identification, and quantity. 5. PREPARATION FOR DELIVERY5.1 Identification 5.1.1 Flux shall be assigned a unique name, a code consisting of letters and/or numbers, or other identification traceable to a specific set of raw materi
30、als, ingredients, manufacturing processes, procedures and sequences, and methods of inspection. If necessary to make any change in the raw materials, ingredients, manufacturing processes, procedures or sequences, or methods of inspection, the identifying name or code shall also be changed. 5.1.2 Eac
31、h package of flux shall be permanently and legibly marked with not less than the following information: FLUX, ALUMINUM BRAZING, FOR TORCH OR FURNACE BRAZING AMS3412F CLASSIFICATION TYPE NUMBER FORM, IF OTHER THAN POWDER PURCHASE ORDER NUMBER MANUFACTURERS IDENTIFICATION (5.1.1) LOT NUMBER DATE OF MA
32、NUFACTURE DIRECTIONS FOR MIXING AND APPLICATION WEIGHT OF CONTENTS 5.2 Packaging 5.2.1 A lot of flux may be packaged in small quantities and delivered under the basic lot approval provided lot identification is maintained. 5.2.2 Containers of flux shall be suitably wrapped, sealed, and boxed or othe
33、rwise packaged for protection against injury and contamination during shipment and under normal dry storage conditions. 5.2.3 Packages of flux shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, pac
34、kaging, and transportation of the flux to ensure carrier acceptance and safe delivery. Packaging shall conform to carrier rules and regulations applicable to the mode of transportation. 6 ACKNOWLEDGME17The supplier shall mention this specification number and its revision letter in all quotations and
35、 when acknowledging purchase orders. 7 REJECTIO16Flux not conforming to this specification, or to modifications authorized by the cognizant engineering organization, will be subject to rejection. SAE INTERNATIONAL AMS3412F Page 5 of 5 8 NOT(68.1 A change bar (|) located in the left margin is for the
36、 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 revision of the document, including technical revisions. Change bars and (R) are no
37、t used in original publications, nor in documents that contain editorial changes only. 8.2 Terms used in AMS are specified 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 Procurement documents should specify not less than the following: AMS3412F Type (1.3) Type and size of container Quantity of flux desired Form (1.3.1). PREPARED BY AMS COMMITTEE “B“
