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इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 1990 (2009): Steel rivet and stay bars for boilers [MTD 4: Wrought Steel Products] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 1990 : 2009 'J.f7'<d)l/ 11FICf} ~%g~cf>~~-R(;fR (~?RT ~erur) Indian Standard STEEL RIVET AND STAY BARS FOR BOILERS ( Second Revision) res 77.140.30; 77.140.85 © HIS 2009 BUREAU OF INDIAN STANDARDS MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 April 2009 PriceGroup 2 Wrought Steel Products Sectional Committee, MTD 4 FOREWORD This Indian Standard (Second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by Wrought Steel Products Sectional Committee had been approved by the Metallurgical Engineering Division Council. This standard was first published in 1962 and revised in 1973. While reviewing this standard, in the light of experience gained during these years,the Committee decided to revise it to bring in line with the present practices being followed by the Indian industry. In this revision the following changes have been made: a) Service temperature for semi-killed steel has been reduced to 300°C. b) Clause 5.4 has been modified. c) A new clause on microalloying elements has been added. d) Frequency for bend test has been increased. e) A new clause on references has been incorporated, f) Sulphur and phosphorus content have been aligned with IS 2002 : 2009 'Steel plate for pressure vessel for intermediate and high temperature service including boilers (third revision)'. For all the tests specified in this standard (chemical/physical/others), the method as specified in relevant ISO Standard may also be followed as an alternate method. The composition of the Committee responsible for formulation of this standard is given in Annex A. For the purpose of deciding whether a particular requirement of this standard is complied with. the final value. observedor calculated.expressing the result ofa test or analysis. shall be rounded offin accordance with IS 2 : 1960 'Rules for rounding off numerical values (revised)', The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 1990: 2009 Indian Standard STEEL RIVET AND STAY BARS FOR BOILERS ( Second Revision) 1 SCOPE 5 CHEMICAL COMPOSITION This standard covers therequirements for steel rivet 5.1 LadleAnalysis and stay bars for use in boilers, designated as St 37 BR and St 42 BR. Theladleanalysis ofsteel whenmade inaccordance with IS228 shall be asfollows: 2 REFERENCES Constituent Percent, Max Sulphur 0.040 The following standards contain provisions which Phosphorus 0.035 through reference in this text, constitute provisions of this standard. At the time of publication, the 5.2 ProductAnalysis editions indicated were valid. All standards are subject to revision and parties to agreements based Permissible variation in thecase of product analysis on this standard are encouraged to investigate the from the limits specified under 5.1 shall be as possibility of applying the most recent editions of follows: the standards indicated below: Constituent Variation Over the Specified ISNo. TItle Maximum Limit, Percent 228(All parts) Methods of chemical analysis of Sulphur 0.005 steels Phosphorus 0.005 1387 : 1993 Generalrequirementsforthesupply 5.3 Residual copper shall not exceed 0.10 percent of metallurgical materials (second in product analysis. revision) 5.4 When the steel is silicon killed. silicon content 1599 : 1985 Method for bend test (second in the product analysis shall not be less than 0.10 revision) percent. Whenthesteel issilicon-aluminium killed, 1608 : 2005 Metallic materials Tensile thesiliconcontentshallnotbeless.than0.03percent testing at ambient temperature and total aluminium content shall not be less than (third revision) 0.01 percent. When the steel is aluminium killed, the total aluminium content shall not be less than 3 GENERAL REQUIREMENTS 0.02 percent. 5.5 WhenNb,V,Ti andBare used,thetotalcontent General requirements relating to the supply ofsteel of these micro-alloying elements shall not exceed rivet and stay bars shall conform to IS 1387. 0.1 percent. 4 MANUFACTURE 6 FREEDOM FROM DEFECTS 4.1 Rivet and stay bars for boilers shall be made The material shall be well and cleanly rolled to the from thesteel manufactured byopen hearth,electric dimensions and tolerances specified. The finished arc furnace, duplex, basic oxygen or a combination materialshall befreefrom such surface and internal of these processes. In case any other process is flaws as would bedetrimental to the end useof the employed bythe manufacturer, prior approvalof the material. purchaser shall be obtained. 4.1.1 Steel shall be supplied in killed condition. 7 SULPHUR PRINT TEST Subject to mutual agreement between the purchaser and the manufacturer, semi-killed steel may also be Asulphur print test shall be madeon asamplefrom used for service temperatures up to 300"C. eachcastusedforrivetand stay barsforthepurpose IS 1990 : 2009 and number of bars in each cast shall be furnished of ensuring that sulphur segregates are not concentrated in the core. The stage in manufacture by the supplier to the purchaser. at which this test is made shall be at the option of 9.5 Test samples shall not be heat treated unless the the steel manufacturer. material from which they are cut is similarly heat treated in which case the test samples shall be heat treated with the material before testing except in the 8 DIMENSIONAL TOLERANCES case of material used for cold forged rivets when the test samples only shall beheat treated before testing. 8.1 The bars shall comply with the following dimensional tolerances: 9.6 Any slight straightening of test sample which may be required shall be done cold. . Sl Size Tolerance Total No. ~ Tolerance Minus Plus 10 TENSILE TEST (I) (2) (3) (4) (5) 10.1 Two tensile tests shall be made from the i) 22 mm 0.2mm 0.2mm 0.40 mm finished steel for every 100 tonne of a cast or part and thereof. When more than one diameterofthe bar is under specified, one additional test shall be made for each ii) Over I percent I percent 2 percent 20mm ofdiameter ofdiameter ofdiameter variation in diameter. 10.2 The tensile propertiesofsteel when determined 8.2 When special plus and minus tolerances are in accordance with IS 1608 shall be as given in required, the sum of such tolerances shall be Table 1. specified as not less than the total tolerance given in 8.1. 11 DUMP TEST 9 SELECTION OF TEST SAMPLES 11.1 One dump test shall be made for each tensile test. 9.1 Test samples shall be selected by the purchaser 11.2 A test piece, having a length equal to twice its from either of the following: diameter, taken from bars or cuttings (see 9.1),shall, a) Cuttings of the bars, and at room temperature, withstand without fracture or b) Barsafter they have beencut tothespecified shall not reveal any crack while being compressed sizes. to half its length. 9.2 In case test samples are selected in accordance with9.1(b) and ifthe test results are satisfactory,the 12 BEND TEST purchasershall considerthe bar from which the test sample has been cut as good material and accept 12.1 Two bend tests shall be carried out for every delivery of the same as though the test sample has 100 tonne of a cast or part thereof. One additional not been cut from it. . test shall be made for each variation in diameter. 9.3 Inneitherof thecases mentioned under 9.1 shall 12.2 The bend test shall be carried out in be test samples be cut from the bars except in the accordance with IS 1599. presence or with the prior approval ofthe purchaser. 12.2.1 The test pieces shall be cut lengthwise from 9.4 Before the test samples are selected, full bars and the full section as rolled. particulars regarding the cast number, size weight Table 1Mechanical Properties (Clause 10.2) 51 Characteristic: Requirement No. r ~ --.. Grade 5t 37 BR Grade sr42 BR (I) (2) (3) (4) i) Tensile strength, MPa (kgf/mm') ii) Yield stress. Min, MPa (kgflmm') 360-440(37-45) 410-500(42-50) a) Up to and including 20 mm 220(22.0) 250(26.0) b) Over 20 mm 200(20.0) 240(24.0) iii) Elongation percent, Min, gauge lengrh 5.65 ~ 26 23 2 IS 1990 : 2009 12.2.2 The test pieces when cold shall withstand boiled linseed oil or a suitable rust preventive as without fracture while being bent close in the case mutually agreed to between the purchaser and the ofGradeSt37BR either bypressure or byslowand manufacturer. steady blows by a hammer. In the case of Grade St 42 BR, the internal diameterof the bend shall be 15 MARKING not greater than twice the diameter for bars of size upto25 rom. For bars ofdiameterover 25 rom,the 15.1 Rivetand stay bars from thesamecast shallbe internal diameterofthe bend shall bethree times the securely bundled together as per tradepractice anda bardiameter. metal tag attached to each bundle and marked with the following information: 13 RE-TEST a) Manufacturer's name or trade-mark, ifany; b) Number or other identification mark by Should anyone of the test pieces first selected fail which they can be traced to the cast of steel topass anyof thetestsspecified inthis standard, two from which they were made; and furthersamplesshall beselectedfortestinginrespect c) Gradeof material. ofeach failure. Should samples shall beselected for testing in respect of each failure. Should the test 15.2 Bars, when not secured in bundles shall each pieces from both these additional samples pass the be legibly marked as specified in 15.1. retest, the material represented by the test samples shall be deemed to comply with the requirement of 15.3 BIS CertificationMarking thatparticulartest. Shouldeitherofthese additional The material may also be marked with the Standard samples fail, the material represented by the test Mark. sample shall be deemed as not complying with this 15.3.1 The use of the Standard Mark is governed standard. bytheprovisions ofBureau ofIndian StandardsAct, 1986 and the Rules and Regulations made 14 RUST PROTECTION thereunder. The details of conditions under which the licence for the use of the Standard Mark maybe After inspection and approval, if so desired by the granted to manufacturers or producers may be purchaser, the bars shall be painted with one coat of obtained from the Bureau ofIndian Standards. ANNEX A (Foreword) CO~COMWOSITION Wrought Steel Products Sectional Committee, MTD 4 Organization Representativels} Tala Steel Limited, Jamshedpur DRD. BHAITACHIUEE (C1IalnNIn) SHRIlHOllANlL CHAKRABORTY(Alternate I) DRA. N. BHAGAT (Alternate II) All India Induction Furnace Association, New Delhi SHRIR.P.VARSHNEY Bharat Heavy Electricals LId, Tiruchirapalli SMalV.RAJASEKHARAN Central Boilers Board, New Delhi ~ DGS&:D. Bhilai NagarlDelhi ~ Escorts Knowledge Managemenl Centre, Faridabad SHRIALoK NAYAR Essar Steels LId, Hazira DRA. K. DAS SHRI R.K. BALASUBRAMANIAM (Alternate) Institute of Steel Development and Growth. Kolkata DRR. K.P.SINGH SHRI JAYANTA KUMARSAHA(Alternate) Jindal South Wesl Ltd. Vasind SHRI M. K. MAHESHWARI M. N. Dastur & Co LId. KolkatalDelhi SMaISUBHABRATASENGUPTA SHRI V. K. TYAGI (Alternate) 3 IS 1990:2009 OrgtutiVJ/ion Representative!s) Ministry of Defence (DGOFB), Kolkata SimiP. S.BAHDHOPADHYAY SHRIT.BASU (Alternate) Ministry of Defence (DGQA), Icbapur SHRJS.K.KHIU'IANEY SHRJ P.MEENA(Alternate) Ministry of Railways (RDSO), Lucknow JOINTD1REcroIl(CiIEMJcAL) JOINT DIRECTOR (I&L) (Alternate) Ministry of Steel (Government of India), New Delhi SHRI A.C.R.DAS SimiB.D. GHOSH (Alternate) National Physical Laboratory, New Delhi DRA.K.GUPTA SHRJR.C.ANANADAHI Power Grid Corporation, Gurgaon ~ Rashtriya Ispat Nigam Ud (VSP), Vishakhapatnam SHRJP.K.SEN SimiP.SRINIVAS (Alternate) SAIL, Bhilai Stccl Plant, Bhilai SimiS.BHATTACHARYA SHRI P.K. DATTA (Alternate) SAIL, Bokaro Steel Plant, Bokaro DR M.M. S. SODHI SHRJP.S. REDDy (Alternate) SAIL, Central Marketing Organization, Kolkata SimiP.C.JHA SHRJ B.V.S.PANDIT(Alternate) SAIL. Durgapur Steel Plant, Durgapur ~ SAIL, USCO Steel Plant, Burnpur SimiA.K. SINGH SAIL, Research & Development Center for Iron & DRRAMENDATTA Steel, Ranchi DRB. K. JHA (Alternate) SAIL. Rourkela Steel Plant. Rourkela SHRJP.K.GUPTA SimiS.MUKHOPADHYAYA(Alternate) Steel Furnace Association of India, New Delhi ~ Steel Re-rolling Mills Association of India, Mandi SHRJC.S.MAlHAJl()() Gobindgarh SimiJ.S.MAllWtOO(Alternate) Tata Consulting Engineers, Jamsbcdpur DRM.D.MAHEsHWARJ Tata Motors Limited. Pune SHRJJ.D.HARJOAS SHRJB. R. GALGALI (Alternate) In personal capacity [403, Udaigiri; Kaushambi, SimiN.MrrRA Distt Ghaziabad (U.P.») BIS Directorate General DR(SHRlMAn)SNEllBHAlLA, Scientist 'F &Head (MID) [Representing Director General (Ex-officio) Member Secretary SHRJDEEPAICJAIN Scientist 'E' (Director) (MID), BIS Long Steel Products andWiresSubcommittee, MTD4 : 2 Escorts Knowledge Management Centre, Faridabad SimiAwl( NAYAR (COIfHIIU) Ministry of Railways (RDSO), Lucknow JOINTDIREcroR(CHaIICAL) JOINTDIRECTOR (I&L) (Alternate) SAIL. Research & Development Center for Iron & SHRJBASUIlEORoy Steel, Ranchi Tata Steel Ltd. Jamsbcdpur SHRJA. N.BHAGAT In personal capacity (248. 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