ट ल फ क स : Please Contact at Telefax in; व य पक पर च लन म मस द DRAFT IN WIDE CIRCULATION

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1 ट ल फ क स : Please Contact at Telefax hmtd@bis.org. in; mtd@bis.org.in व य पक पर च लन म मस द DRAFT IN WIDE CIRCULATION प रल ख प र षण स चन /DOCUMENT DESPATCH ADVICE एमट ड 11/ट -115, MTD 11/T-115 Date व ल ड ग स म न य एव उसक अन प रय ग क ववषय सममत एमट ड 11 WELDING GENERAL AND ITS APPLICATIONS SECTIONAL COMMITTEE, MTD 11 क) ध कमम इ ज तनयर ग ववभ ग पर षद (एमट ड स ), क र चच खन व ल सदस य 1) Interested Members of Metallurgical Engineering Division Council, MTDC 1) व ल ड ग स म न य एव उसक अन प रय ग क ववषय सममत एमट ड 11 क सदस य 2) All Members of Welding General and its Applications Sectional Committee, MTD 11 ग) अन य सभ र चच खन व ल तनक य 3) All Others Interested मह दय/मह दय, Dear Sir/ Madam, तनम नमल ख प रल ख स लग न ह : Please find enclosed the following draft standards: प रल ख स ख य /Document No. व षय/ Title 1. प रल ख: एमट ड 11 ( )W ध स मग र म व ड प ववन शक प क षण - व ड क मलए श क र कक ग प क षण - आकम व ल ड ग प रकक रय ए - भ ग 1 : स म न य' (आइएसओ : 2004 प आध र )(Revision of IS :2004) Doc: MTD 11 (13521 )W Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 1: General. (Based on ISO : 2004) Revision of IS :2004 क प य उप क प र लख क अवल कन क एव अपन सम मत य यह ब ह ए भ ज, कक यदद अ : यह प रल ख ष ट र य म नक क र प म स व क ह ज ए, इस प अमल क न म आपक व यवस य अथव क ब म क य कठन ईय आ सक ह Kindly examine these draft standards and forward your views stating any difficulty which you are likely to experience in your business or profession, if these are finally adopted as National Standard. सम मत क अलन म त चथ/ Last date for comments: The scope of the standard ISO is attached herewith. The complete document/text of ISO Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 1: General, may be made available, on request to:

2 Scientist E & Head (Metallurgical Engg. Department) Bureau of Indian Standards, Manak Bhavan, 9, B.S.Z. Marg, New Delhi सम मत यदद क ई ह प छ ददए गए प र र प म मलख क, ऊप मल ख प प अध हस क ष क भ ज Comments, if any, may please be made in the format given overleaf and mailed to the undersigned at the above address. धन यव द, Thanking you, भवद य, yours faithfully, (एन. स ययन र यण) (N. Suryanarayana) ज ञ ननक ई ए प रम ख (ध त कमय इ ज.) Scientist E & Head (MTD) mtd@bis.org.in; hmtd@bis.org.in

3 For Comments Only Doc: MTD 11(13521)W ISO : 2004 BUREAU OF INDIAN STANDARDS Draft Indian Standard DESTRUCTIVE TESTS ON WELDS IN METALLIC MATERIALS - COLD CRACKING TESTS FOR WELDMENTS - ARC WELDING PROCESSES - PART 1: GENERAL ICS Not to be reproduced without the permission of Last date for receipt of BIS or used as STANDARD comments is NATIONAL FOREWORD This draft standard (Part 1) (First Revision) which is identical to ISO : 2004 Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 1: General issued by the International Organization for Standardization (ISO), and subject to its finalization, is to be adopted by the Bureau of Indian Standards on the recommendation of the Welding General and its Applications Sectional Committee and approval of the Metallurgical Engineering Division Council. This standard was first published in The present revision has been brought out the align it with ISO : 2004 by adoption, under dual numbering system. While this part of the standard covers Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 1: General : This standard is published in three parts. Other parts of this standard are: Part 2 Self-restraint tests Part 3 Externally loaded tests The text of ISO standard has been approved as suitable for publication as in Indian Standard without deviations. Certain terminologies and conventions are, however, not identical with those used in Indian Standard. Attention is especially drawn to the following: a) Wherever the words `International Standard appear referring to this standard, it should be as read as `Indian Standard b) Comma (,) has been used as a decimal marker while in Indian Standards the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to the following International Standard for which Indian Standard also exists. The corresponding Indian Standard which is to be substituted in its place is listed below along with its degree of equivalence for the edition indicated:

4 International Standard Corresponding Indian Standard Degree of Equivalence EN ISO Destructive tests on welds in metallic materials - Cold cracking tests for weldments Arc welding processes - Part 2: Selfrestraint tests (ISO :2004). EN ISO Destructive tests on welds in metallic materials - Cold cracking test for weldments -Arc welding processes - Part 3: Externally loaded tests (ISO :2004). MTD 11 (13522 ) Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 2: Self-restraint tests MTD 11 (13523 ) Destructive tests on welds in metallic materials -- Cold cracking tests for weldments -- Arc welding processes -- Part 3 : Externally loded tests Identical with ISO : 2004 Identical with ISO : 2004 In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS 10842`Rules for rounding off numerical values (revised). PREVIEW OF ISO :2004 Throughout the text of this document, read " this European Standard " to mean " this International Standard ". ISO consists of the following parts, under the general title Destructive tests on welds in metallic materials Cold cracking tests for weldments Arc welding processes: Part 1: General Part 2: Self-restraint tests Part 3: Externally loaded tests 1 Scope This standard describes the fundamentals of cold crack formation and the principles of cold cracking tests. These tests can be used to determine the cold cracking sensitivity of welding consumables, parent materials, weld metal. The most common tests are described (after referred to hydrogen cracking). In addition, an overview is given of the cold cracking test procedures, their classification, and their fields of application are within EN ISO and EN ISO

5 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 publications 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 (including amendments). EN ISO Destructive tests on welds in metallic materials Cold cracking tests for weldments Arc welding processes Part 2: Self-restraint tests (ISO :2004). EN ISO Destructive tests on welds in metallic materials Cold cracking test for weldments Arc welding processes Part 3: Externally loaded tests (ISO :2004). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 cold cracks local rupture (intergranular or transgranular) appearing as a result of a critical combination of microstructure, stress and hydrogen content Note 1 to entry: Cold cracks are also known as hydrogen cracks or delayed cracks. Note 2 to entry: Cold cracking occurs at temperatures below the solidus temperature, sometimes days after fabrication. 3.2 cold cracking test procedures procedures for determining the cold cracking sensitivity of parent materials, welds metal and welded joints, in respect with the welding procedure used 3.3 self restraint tests tests where specimen loading is produced by residual stresses developed during and after welding of a restrained weldment 3.4 externally loaded tests tests where specimen stressing is the result of the test procedure and where the specimen is loaded externally