International Standard @ 657119 0 ~%&I@/# INTERNATIONAL ORGANIZATION FOR STAN~AR~IZATI~N*ME)W~APO~HAR oprAk4ti3AuMA no CTAH~APTH3AuHHKJRGANlSATlON INTERNATIONALE DE ~ORMALISATION Hot rolled steel sect[.]
0 International Standard @ 657119 ~%&I@/# INTERNATIONAL ORGANIZATION FOR STAN~AR~IZATI~N*ME)W~APO~HAR oprAk4ti3AuMA no CTAH~APTH3AuHHKJRGANlSATlON Hot-rolled steel sections Part 19 : Bulb flats (metric series) sectional properties and tolerances Profit& en acier laminks axes et tokrances First edition - ri chaud - Partie 19 : Plats B boudin l&rie mktrique) INTERNATIONALE DE ~ORMALISATION Dimensions, - Dimensions, caractkristiques rapport&es aux 1980-02-01 Gi - U DC 669.14-422.2 if Descriptors : metal sections, Ref No steel products, hot rolled products, sectional properties, dimensions, dimensional IS0 657/19-1980 (E) tolerances s 5: Price based on pages FOREWORD IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 member bodies) The work of developing International Standards is carried out through IS0 technical committees Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council International Standard IS0 657/19 (formerly ISO/DIS 4974) was developed by Technical Committee lSO/TC 17, Steel, and was circulated to the member bodies in January 1978 It has been approved by the member bodies of the following Australia Belgium Bulgaria Canada Czechoslovakia Denmark Egypt, Arab Rep of Finland France Germany, F.R India Iran Ireland Italy Korea, Dem P Rep of Korea, Rep of Mexico Netherlands New Zealand Norway The member bodies of the following document on technical grounds : countries Japan USA international Printed Organization in Switzerland for Standardization, 1980 l countries : Poland Romania South Africa, Rep of Spain Sweden Switzerland Turkey United Kingdom USSR expressed disapproval of the INTERNATIONAL IS0 657/19-1980 (E) STANDARD Hot-rolled steel sections Part 19 : Bulb flats (metric series) sectional properties and tolerances SCOPE AND FIELD This International steel bulb flats Dimensions, OF APPLICATION Standard specifies dimensions, sectional properties and dimensional tolerances for metric series hot-rolled DESIGNATION Hot-rolled steel bulb flats shall be designated by the width, 6, and thickness, t Example : 200 x 10 DIMENSIONS The dimensions of bulb flats shall be as given in table 1 IS0 657/19-1980 (El ‘b TABLE ksignation Mass Sectional area M A kg/m b cm mm - Dimensionsandsectional t c properties r Surface area rl Sectional properties Centroid ZX CX mm mm mm m2/m cm cm cm 80X 80X 4,87 5,50 6.20 7.00 80 80 14 14 4 0,192 0,194 4,78 4,69 39.0 43,3 100x 100X 6,86 7,65 8.74 9,74 100 100 15,5 15.5 4.5 4.5 0,236 0,238 5.87 5.78 85,3 94.3 120x 120X 8,25 9.19 10.5 II,7 120 120 17 17 5 0,278 0,280 7.07 6.96 148 164 21.0 23.6 140x 140X 9,74 10,8 12,4 13.8 140 140 19 19 5.5 5.5 0,320 0,322 8,31 8,18 241 268 29.0 32.5 160X 160X 160X 11,4 12,7 14,0 14,6 16.2 17.8 160 160 160 22 22 22 6 0,365 0,367 0,369 9,66 9.49 9,36 373 411 448 38,6 43.3 47,9 180X 180X 180X 9' IO 14,8 16.2 17.6 18.9 20.7 22.5 180 180 180 10 25 25 25 7 0,411 0,413 0,415 10,9 10.7 IO,6 609 663 717 55.9 61,8 67,8 200 x 200 x 10 200 x 11.5 18.5 20,l 22.5 23.6 25,6 28.6 200 200 200 10 11.5 28 28 28 8 0,457 0,459 0,462 12,l 11.9 II,7 841 1020 1130 77.7 85.0 96,2 220 x 10 220 x 11.5 22.8 25.4 29.0 32.3 220 220 10 11.5 31 31 9 0,503 0,506 13,4 13.1 1400 1550 105 118 240 X 10 240 X 11 240 X 12 25,4 27,4 29,3 32,4 34.9 37,3 240 240 240 10 11 12 34 34 34 10 10 10 0,547 0,549 0,551 14,7 14,6 14,4 1860 2000 2130 126 137 148 260X 260X 260X 10 11 12 28.3 30.3 32.4 36.1 38,7 41.3 260 260 260 10 11 12 37 37 37 ll11 11 0,593 0,593 0,595 16,2 16,0 15.8 2470 2610 2770 153 162 175 280X 11 280 X 12 33.5 35,7 42.6 45.5 280 280 11 12 40 40 12 12 0,637 0,639 17,4 17.2 3330 3556 191 206 300 x 11 300x 12 300 x 13 36,7 39.0 41.5 46,7 49,7 52,8 300 300 300 11 12 13 43 43 43 13 13 13 0,681 0,683 0,685 18.9 18.7 18.5 4190 4460 4720 222 239 256 320 X 12 320 X 13 42,5 45,0 54.2 57,4 320 320 12 13 46 46 14 14 0,728 0,730 20.1 19.9 5530 5850 274 294 340x 12 340 x 14 46,l 51.5 58,8 65,5 340 340 12 14 49 49 15 15 0,772 0,776 21,5 21,l 6760 7540 313 357 370x 370x 13 15 54.6 60,5 69.6 77,o 370 370 13 15 53,5 53,5 16.5 16.5 0,840 0,844 23,5 23.0 9470 10400 402 455 400 x 14 400X 16 63,9 70,2 81,4 89.4 400 400 14 16 58 58 18 18 0,908 0,912 25,5 25,0 12900 14200 507 568 430x 430x 73.9 80.6 94.1 103 430 430 15 17 62.5 62.5 19,5 19,5 0,976 0,980 27.4 26.9 17300 18900 628 700 15 17 a,15 9,24 14,5 16.3 ISO657/19-1980 (E) TOLERANCES 4.1 Width and thickness Tolerances on width (b) and thickness (t) shall be as given in table TABLE - Tolerance on width and thickness Dimensions Width, b Over 4.2 Thickness, t I Up to and including Including and over Up to and including Tolerance on width Tolerance on thiokness i: 1,5 + 0.7 - 0,3 +1 - 0,3 - 120 WJ 120 180 7,O 10,o f 2,0 180 300 9.0 13.0 f 3,0 300 430 12.0 17,o +4,0 Radius in millimetres 8.0 I +1 - 0.4 + i,P - ($4 at corner The radius r2 at corners shall be within the limits given in table TABLE - Radius at corner Values in millimetres Thickness, t Radius, r2 - 1.5 m 13 3.0 17 4,O 13 4.3 I Camber The maximum 4.4 permissible camber when measured over the entire length is 0,35 % x length Length The cutting tolerance on length is + loi mm The bulb flats may be supplied to tighter length tolerances subject to agreement between the purchaser and the supplier 4.5 Mass Where the tolerance on mass per unit length is to be specified as the rolling tolerance provision shall be included in the appropriate national standard in lieu of thickness tolerance, such