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IS r 1570 Pert I ). f97tIndian StandardSCHEDULES OR WROUGHTSTEELSPART STEELSSpECtFtEDBy TENSTLEAND/ORYIELD PROPERTIES

( First RevisionO. FOREWORD

0.1 This Tndian Standard ( Part I ) ( Fir-stRevision ) was adopted by theIndian Standards Institution on 20 November 1978, aftei the -draftfinalized by the Alloy Steels and Special SteelsSectionalCommittee hadbeen approved by the Structural and Metals Division Council.0.2 Schcdules for wrought steels for general engineering purporo( IS: 1570-1961) was irst published n 1961. On thebaiisof the e*periencegained in the production and use of steels, the Sectional Commiltee hardecidcd to revise the standard and issue it rn parts. The other partr of,the rtandard are as follows:

Carbon steelsCarbon and carbon manganese ree cuttingsteels

Part IV Alloy steels( excluding stainlessand heat-resistingsteels

Part IIPart III

Part VPart VI

St:.inlessand heat-regirtingsteels*Tool steels

0.3 The following major modifications have been made in this revision:a) Steel designations have been modified in accordance witlIS: 1762 ( Part I )-1974t. FlDwever, or the sakeof easy denti-fication old designationsare also given within brackets.

'Alreedypublirhed r IS: 1570 PartV )-t972.fCode for derigaation of rtecls: Part I Basedon lettcr ryrrtrolr (fvst reoit*n .3

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I S : 1 5 7 0 ( p a r t t ) . r 9 Z Smechanical proDertiesdifferent from those given in this schedure rhouldot be madd unless pecial condiii.", .? *."ice t'ender this esserltiar. rhhat event, full reaions- r"" t1"-1."p"*a departure from the steersspecified in this sche{ure shalr bi iiu-rtt.a to the Alroy steersandspecial steelssectional committee, s-vdd'rg, "raitr-.ip"or".i Ju,uirr.a.2.2 In the case of steels belongjng to this schedulc t is not usual topecifya detailed chemical .o-poiiti3r,, tri tr,. quality of the matcriar irontrolled, where necessary,. v rp."iry;"g tnJ -"'*;, ' .,-" pl.mirsiutepercentage f sulph.rr and phosphoius. sin.e aitrerent eu.i, i l ,,rtpr,r,and phospho.u' i.e ::lll.^11.;;;;;s tI'tr,.. scveriry of the conditiorun service, imits for theseerementsare not ir,.rra.j ' ir i , ir" lr" i"- iur., t,rthould be specifiedn.a specificarion i l"r:.t, upp.opriate o the method ofteelproduction, conditionsof serrice, rc.- ' wrrt.. '"*.rr*yl-,i" typ. orteel , for examole. k i l red,.semi- l i rL .a , - - . , " , should be included in thetandard. In the caseof [irr.J una'rJ.ni]l irr.a variery of steer, t woulde necessaryo specify he sil icon ;";;;;. " '2'3 where rpeciar factors,srrchas werdability, are invorved, it may bedesi rab le o' incrude a maximum ri ; i ; - ; " t r re carbon content n thcpecification. rn some_ tructural rt. . ir, lopper content is found to beeneficial for increasing resistance o coirosiii ;"d,";;"iln "J^r.r, tt i,hould be specifiedn tie standard.11,t: lddltion to the- tensile and yield stress,yslu.s.for the specifiedmrnrmum percentage elongation, coirespondinc i; ;il:;n?ia t"r,rit"ranges, are given in Table- l. These cfungation values are based on aauge length of 5'6s{n which is "o*-i"i."*"ii""Jiy-".l.},ii. If tectpieces of other than 5-.6:\/ A gauge Iength are used, elongation conver_sions may be obtained from IS t glos-tdz+r.. For tensile i"rt, o' t,ruer,the specified ercentageelongation ri""la'U" basedon the formula of 950ivjd^c_dy_lh; actual iensile itre nsth l"1.;; .to565y7-". "i r ioo ild;; ;; ;;;';:l',;i' g":,f :nl,J,-r,W*il:when using a gauge length equivalent to 4{A.

rMethod for elongation conversionr for steel (f .st rcaision)5

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Ar\,TENDMENT O. L JANUARY 1981TO

IS :1570(Par t I ) - 1978 SCI -XEDULESORlVROUGTIT STEELSFART I STEELS SPECIFIEDBY TE$JSILEANtr /ORYI EL D PRO F ERT I ES

( First Reerision)Corrigenda

... . J Pagc6, Table l, headingof col 3 ) - Substitutc .TsNsrr-aSrnrxcrn,Min' ;for'Trxsrr,r Srarxcrx '. -^ - i Pageg, ctauscA- l . t (d)(3)( i ) , I ine I f_ Subst i tu te 1000 t inr :s,Jor ' lO0 times .- .[ -Pagc , clausc :l.l (d)(3) (i i), t ine | ) _ Substitute ( i 000 times ,for ' I00 times '.

-Reprography n@

(SMDC s )

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I S : 1 5 7 0 ( P a r t t ) - 1 9 7 Sis killed, semi'ki'ed or rimming variety, the fo'owing rymbors*rail be used o indicate rhe stier maxrngpracrtce:i) R for rimming steel,andii) tr for killed steel.

No* - If no symbol is used, it sha'mean that thc stccl ir of semi-kitcd typc.2) stccl.Q""!g - The fonowing symborssha' be usedto indicatesteelqualityl.

ql - Non-ageing quality,Q2 - Freedom from flaLes.q3 - Grain size controlled,q4 - Inclusion controlled, ande5 - Internal homogeneityguaranteed.

3) Dcgrceof puritlt- The surphur and phosphorus levers ( ladleanalys;s) shall be expressed s fouows:Symbol Maximum Contentn perccnt'-;;;;;-^--';ol;-825 0.025 o.o2sP35 0.035 0.03sP50 0.050 0.050P70 0.0i0 0.070No rymbol 0.055 0.055will meanThe abovesymbolsuse the retter' p' fo'owed by r 000 timesthe maximum percentage of :ulphu. ".J-Jfr"lpl.i"r. Incase he maximum contents of suiphur ^"d'ph;iil;r,r, ur.not same, the following procedure iha[ b. f.li;;e;-Symbor sp shall be used to indicate the rcvcrs ollowed by:i) 100 times the maximum sulphur rounded ofi. to the,nearst nteger.

tRouadlng off rhall b-edone according o'thc rurer givcn in IS:2.r 960 . Rulcr forroundiugoffnumerical vtluu (rciltcd),. -

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Stcels

I S : 1 5 7 0 ( P a r t I ) - 1 9 7 8ii) 100 times the maximum phosphorus rounded offr to thenearest nteger.Examplcz

Maximum sulphur : 0'045 percentMaximum. phosphorus - 0'035 percentDesignation: SP 44

4) Wcldabilit2 GuarantccGuaranteed weldability of rtcel ardetermined by tests mutually agreed between the purcharcrand'the supplier shall be indicated by thc followlng tyhbol!:W - Fusion weldable, andW1 : lVeldable by resistance welding but not furior*eldable.

5) Rcsistancco Bri l l lc Fracturc- Symbol' B', t B0', ' 82' or'84' indicating resistanceo britt le fracturb based' on theresultsof the V-notch Charpy impact test.For steelsB, B0, 82 and 84 a test should be made with CharpyV-notch ipecimens, taken in the direction of rolling with thenotch perpendicular to ihe surfaccof thd plate br product.Steels B, B0, 82 and 84 arc characterized by an averageV-notch Charpy impact value according to the followingtable: j! 'MYy_

370 o 520N/mmrEnergy Tempe-

500 to 700N/mmr ,r/----_A--T-tEnergy Tcmpe-

(4)J4029+o28,1028,t0

(2)J2828(: lEBO

ratqrc(q)oc270

fature(5)'c27_ 1 00,

- 3 0-20_ 5 0_ 4 0IS :2 -1960Ru lo for

82 28 -20B+ 28 -40

rRounding off shall hg donc according to thc ruleE given inrounding off numerical valucr ( nakcd )' .

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lS: 1570 Part t ) . t9?86) Surfacc ConditicnThe follou'ing symbols shali be used toindicatesurface ondition:

Sl - Deseamed r scarl 'cd;52 -- Descaled;S3 - Picklcd ( including washirrgand neutralizing ;54 - Shot, gri t or sandblasted;55 - Peeled skinned ;56 - Bright drau'n or cold-rolled; and57 - Ground.

Nore-- I f no rymbol is used, t shal l mcen that the rwface is in i i - rot led o;ar-lorged condition.7) I''ornahility Applbable o ,\heetOnlT - TIre ftrllx.,.ings1'mbol::h.ri l be usedto indicate drarvabil i ty:

Dl - Drawing quality,D2 - Deep drawing quality, andD3 - Extre deepdrawing quality.

Nore . - I f no symbo l i s used , i t sha l l mean tha l t he s t " " i i r co rn r r c i a lqual i ty .8) SwfaceFinish Al,Stl icableoShceOnll '1 TIre fi, l los'inssvmbolrshal lbe used o in dicate he sur ' {bcein ish:

Fl -- General purpose in;sh,F2 - Ful l f inish,Ir3 * Exposed,F4 - {Jnexposed,F5 - Matt finish,F6 - Bright finish,F7 - Plating finish,FB - IJnpolished inish,f9 - Polished inish,F10 -- Polishedand colourcd blue.F l I -Pol ished and colorrredel !orv.Fl2 - l ,{ i rror finish.

l 0

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I S : 1 5 7 0 ( P a r t I ) - f 9 7 8Fl3 - Vitreous enamel inish' andFl+ - Direct annealed inish'

9) Trcatnent- Thg following symbols shall be used to indicatethe treatment given to the steel:

Tl - Shot'Peened,T2 - Hard-drawn'T3 - Normalized*,T4 - Controlled rolled'T5 - Annealed'T6 - Patented,T7 - Solution-trcatcd'T8 - Solution-treated and aged'Tg - Controlled cooled,Tl0 -- Bright annealed,Tl I - SPherodized,Tl2 - Stress-relieved,Tl3 - Case-hardenedr ,ndTl4 - Hardened and temPercd'

Nore - If oo symbol is used, it neans that the steel is hot-rollcd'

lO\ ElcaatcdTemperaturc ropcrtics.- For guarantec with regard to'"' J"""t.a t""ip"t"t"tt ploperties, he letter'H' shall be used'Ho*"u"r, i; the disignation only- the room temperatureo.oo"rtio shall te shoin. Elevated temperature propertiesItr"if f" intimated to the purchaser separatelyby the manu-facturer.ll) CrlogcnicQtatii - For guarantee-with egard to low tempera-ture propertt.t, i tt" lettei 'L' shall be usEd' Howevcr' onlythe room temitrature properties shall be indicated in the

, designation'ExamPles:Fe r0uK flfi *:i*"jrl:l1r'""3i,:ni;311ilif

FeE 300 P 35 - semi-killcd stecl with a minimum yield strengthr ocludcs temPering, if donc'

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IS : 1570 Part I ): 1978of 300 N/mmt and degreeof purity as follows:

S & P : 0 ' 0 3 5 M a xFc 470W - Steel with a miirimum, tensile strensih of. 47ON/mm2 and of guaranteedfusion welding qualityFeE 550 56 -,Bright drawn or cold rolled steelwith a minimumyield srrength of 550 N/mmtFe 00R - Rimming quality steel with no guarantee qf,minimum tensileor yield strengthFcE 590 F7 - SheBt tteqJ_gf_ |qti"e finish and minimum yieldstrengtfuof 590 N/mm2Fe5l0Ba -,Steel in annealedcondi t ion with a minimumtensile strength of 510 N/mmz and resistanceobrittle fracture : BFc 710 H - Steel with g_uarantced elevated temperatureproperties and a minimum room temperaturetensilestrengthof 710 N/mm3Fe 410 Ql - Semi-killed non-ageing quality steel withS & P : 0'055Max and minimum tensi le410N/mm2

- Semi-kil led steel in controlled rolled conditionrvith a minimum tensilesrre grh c,f600 Nimm2- Cryogenic qualitr- steel rr' ith a n:i;: imum room':mperature tensilestrenglhof 520 \. rcmt

APPENDIX BLIST OF INDIAN STANDARDS REFERREDINCOLUMN 6 OF TABLE I

TitleSpecification for structural steel ( standard

Fe 600T4Fe 520L

g lh.l . I S : 2 2 6 - 1 9 7 5 quality ) (.fiJth rcvision,)2, IS : 432 ( Part I )- Mild steel and medium tensilc steel bars and1966 hard drawn steel .wire for concrete reinforce-ment: Part I Mild steel and medium tensilerteel barr (sccond cuiion)

t 2

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3, IS :432 ( Par t I ) -1966I S : 1 5 7 0 ( P a r t I ) - 1 9 7 E

Mild steel and medium tensile steel bars andhard drawn steel wire for concrete reinforce-ment: Part II Hard drawn steei wire (sacontlreoision)Specification or structural steel ( high tensile)(secondcaision)Spe-cification or hot rolled carbon steel sheetand strip (third rcuision)Specification for rivet bars up to 40 mm forstructural purposes ( secandeaision)Specification tbr structural steel ( ordinaryquality ) {second eaision)Specification or line pipe (y'ruf revision)Specification for high test line pipe (frstreaisionSpecification for structural steel ( furion weld-iog quality ) (frst reaisian)Specifi-cationor stecl billets, bars and rectionsfor boilers (frst reoision)S-pecificationor carbon steelbillets, bloomsandslabs"fore-roliirrg into structural steel( standardquality ) (rtrst rcaision)SFecific-ationor carbon steelbillets, bloornsandslabs. for re-rolling into structurai sieel( ordrnary quality ) (frst rcuision)Speci6cation {br structural steel ( shipbuildingquality )Specification for steel for marine boile""pressure vessels and weldeJ :;";hi;.rystructuresCarbon steelsheets or integral coaches

4.5.6.7.8.9.

10.l l .

I S : 9 6 1 - 1 9 7 5IS: 1079-1973IS: l l4B-1973IS: 1977-1975I S : 1 9 7 8 - 1 9 7 1IS: 1979-1971

I S : 2 0 6 2 - 1 9 6 9IS: 2100-1970

12. IS ;2830-1975

1 3 . I S : 2 8 3 1 - 1 9 7 5

14. IS :3039-196515. IS' ;3503-1966

16. IS :5272-1969l 3

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X S : 1 5 7 0 ( P a r t I ) - 1 9 7 817. IS:5986-1970

lB. IS : 69ltl-'19731 9 . I S : 6 9 1 5 - 1 9 7 320. IS:8500-1977

Hot rollcd steelplatesand flats for cold formingand flanging operationr for automobile andgcneral purPosesCarbon steel cast billet ingotr for rolling intostructural steel ( standard quality )Carbon rteel cast billet ingots for rolling intoltructural steel ( ordinary quality )Specification for weldable structural rteel('rncdium and high ttrength qualitl )