1、BRITISH STANDARD AEROSPACE SERIES BS EN 3944:1998 Nickel base alloy NI-B41204 (NiCr13Si4B3) Filler metal for brazing Tape The European Standard EN 3944:1998 has the status of a British Standard ICS 49.025.99BSEN3944:1998 This British Standard, having been prepared under the directionof the Engineeri
2、ng SectorBoard, was published underthe authorityof the Standards Board and comes intoeffect on 15 July 1998 BSI 04-1999 ISBN 0 580 30129 X National foreword This British Standard is the English language version of EN3944:1998. The UK participation in its preparation was entrusted to Technical Commit
3、tee ACE/61, Inspection and testing requirements for aerospace metallic materials, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests
4、 informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred
5、to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contr
6、act. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theENtitle page, pages 2 to 6 an
7、d a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN3944:1998 BSI 04-1999 i Contents Page National foreword
8、 Inside front cover Foreword 2 Text of EN 3944 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN3944 April1998 ICS49.025.99 Descriptors: Aircraft industry, filler metals, brazing, nickel alloys, powdery materials, strips, designation, chemical compostion, delivery condition, characterist
9、ics, specifications English version Aerospace series Nickel base alloy NI-B41204 (NiCr13Si4B3) Filler metal for brazing Tape Srie arospatiale Alliage base nickel NI-B41204 (NiCr13Si4B3) Mtal dapport de brasage Feuillard de poudre agglomre Luft- und Raumfahrt Nickelbasislegierung NI-B41204 (NiCr13Si4
10、B3) Hartlot in Form von Band This European Standard was approved by CEN on 17 December 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date
11、 lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the r
12、esponsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
13、 Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any
14、means reserved worldwide for CEN national Members. Ref. No. EN 3944:1998 EEN3944:1998 BSI 04-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association
15、, this Standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by
16、endorsement, at the latest by October 1998, and conflicting national standards shall be withdrawn at the latest by October1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, B
17、elgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 0 Introduction 3 1 Scope 3 2 Normative references 3EN3944:1998 BSI 04-1999 3 0 Introdu
18、ction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN4258. This standard has been prepared in accordance with EN4500-6. 1 Scope This standard specifies the requirements relating to: Nickel ba
19、se alloy NI-B41204 (NiCr13Si4B3) Filler metal for brazing Tape for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the p
20、ublications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2043,
21、 Aerospace series Metallic materials General requirements for semi-finished product qualification (excluding forgings and castings) 1) . EN 3875, Aerospace series Metallic materials Filler metal for brazing Technical specification 1) . EN 3943, Aerospace series Nickel base alloy NI-B41204 (NiCr13Si4
22、B3) Filler metal for brazing Powder or paste 1) . EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use 1) . EN 4500-6, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part
23、6: Specific rules for filler metals for brazing 1) . 1) Published as AECMA Prestandard at the date of publication of this standardEN3944:1998 4 BSI 04-1999 1 Material designation Nickel base braze alloy NI-B41204 (NiCr13Si4B3) 2 Chemical composition 1) Element C Si P S B Cr Fe Al Co Se Ti Zr Others
24、Ni Total % min. 3,50 2,50 12,0 3,0 Base max. 0,03 4,50 0,02 0,02 3,25 14,0 5,0 0,05 0,10 50*) 0,05 0,05 0,05 3 Method of melting Air or inert gas or vacuum melted 4.1 Form Tape 4.2 Method of production Produced from powder EN 3943 4.3 Limit dimension(s) mm 5 Technical specification EN 3875 6.1 Deliv
25、ery condition As manufactured Heat treatment 6.2 Delivery condition code U 7 Use condition Delivery condition Heat treatment Characteristics 8.1 Test sample(s) 8.2 Test piece(s) 8.3 Heat treatment 9 Dimensions concerned mm 10 Thickness of cladding on each face % 11 Direction of test piece 12 Tempera
26、ture C 13 Proof stress R p0,2 MPa 14 T Strength R m MPa 15 Elongation A % 16 Reduction of area Z % 17 Hardness 18 Shear strength R c MPa 19 Bending k 20 Impact strength 21 C Temperature C 22 Time h 23 Stress B a MPa 24 Elongation a % 25 Rupture stress B R MPa 26 Elongation at rupture A % 27 Notes (s
27、ee line 98) *) 1)EN3944:1998 BSI 04-1999 5 44 External defects See EN 3875 53 Thermal analysis (Differential thermal analysis) See EN 3875 7 Liquidus: 1 125 C Solidus: 960 C 76 Wettability (Fusion test) See EN 3875 77 Mass per unit area See EN 3875 78 Metallic alloy content See EN 3875 7 $ 91 % 82 B
28、atch uniformity (Material verification) See EN 3875 95 Marking inspection See EN 3875 96 Dimensional inspection See EN 3875 98 Notes *) p.p.m. 1) The chemical composition refers to the metallic alloy content. 99 Typical use Joining nickel and cobalt base alloys.EN3944:1998 6 BSI 04-1999 100 Product
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