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1、J IS JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association Rolled steels for welded structure ICs 77.140.01 Reference number : JIS G 3106 : 2004 (E) PROTECTED BY COPYRIGHT 20 s G 3106 : 2004 Foreword This translation has been made based on the original Japanese I
2、ndustrial Standard revised by the Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee, as the result of proposal for revision of Japanese Industrial Standard submitted by The Japan Iron and Steel Federation (JISF) with the draft being at- tach
3、ed, based on the provision of Article 12 Clause 1 of the Industrial Standardization Law applicable to the case of revision by the provision of Article 14. Consequently JIS G 3106 : 1999 is replaced with this Stan- dard. Attention is drawn to the possibility that some parts of this Standard may confl
4、ict with a patent right, application for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have technical properties. The relevant Minister and the Japanese Industrial Standards Committee are not responsible f
5、or identifying the patent right, application for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have the said technical properties. Date of Establishment: 1952-11-25 Date of Revision: 2004-03-20 Date of Pub
6、lic Notice in Official Gazette: 2004-03-22 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Iron and Steel JIS G 3106 : 2004, First English edition published in 2004-06 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-
7、ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original TIS is to be the final authority. O JSA 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
8、 including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT -,-,- G 3106 : 2004 Contents Page Introduction . 1 2 3 4 5 5.1 5.2 6 6.1 6.2 7 8 9 9.1 9.2 10 Scope Normative references Grade and designation . Chemical composition . Car
9、bon equivalent or chemical composition on sensitivity of welding crack . Carbon equivalent or chemical composition on sensitivity of welding crack for SM570 . Carbon equivalent or chemical composition on sensitivity of welding crack for thermomechanically controlled steel plate Mechanical property .
10、 Yield point or proof stress. tensile strength and elongation . Charpy absorption energy Shape. dimension. mass and the tolerance thereon Appearance . Heat treatment and symbol . Symbol of heat treatment Heat treatment Tests; . 10.1 Chemical analysis 10.2 Mechanical test 11 Inspection 11.1 Inspectio
11、n 11.2 Reinspection 12 Marking . 13 Report 1 1 1 1 2 3 3 4 5 5 7 7 7 7 7 7 8 8 8 10 10 10 10 11 (i PROTECTED BY COPYRIGHT -,-,- G 3106 : 2004 Annex 1 (normative) Sampling position of the test piece .+ 13 Annex 2 (normative) Structural steels-Plates, wide flats, bars, section and profiles . 15 Annex
12、A (normative) Position and orientation of test pieces . . . 25 Annex B (normative) Energy values for impact test pieces of reduced size . . _. . 26 Annex C (informative) List of International Standards on tolerances for steel products . 27 Annex D (informative) Notes on weldability . 28 Annex 3 (inf
13、ormative) Comparison table between JIS and corresponding International Standard ,.,. 29 (ii) PROTECTED BY COPYRIGHT -,-,- JAPANESE INDUSTRIAL STANDARD JIS G 3106 : 2004 Rolled steels for welded structure Introduction This Standard is the Japanese Industrial Standard specified by making revisions on
14、the text of the original Japanese Industrial Standard revised in 1999 such as the expansion of the scope of flats, and by specifying IS0 630 Structural steels-Plates, wide flats, bars, sections and profiles published in 1995 as annex 2 without modifying the technical contents. 1 Scope This Standard
15、specifies the hot rolled steels (hereafter referred to as “steel products”) to be used for bridges, ships, rolling stocks, petroleum storage tanks, con- tainers and other constructions that have superior weldability. Remarks : In using this Standard, either its text or annex 2 shall be applied. The
16、International Standard corresponding to this Standard is as follows. In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) ac- cording to ISO/IEC Guide 21. IS0 6
17、30 : 1995 Structural steels-Plates, wide flats, bars, sections and profiles (MOD) 2 Normative references The standards listed in attached table 1 contain provi- sions which, through reference in this Standard, constitute provisions of this Stan- dard. The most recent editions of the standards (inclu
18、ding amendments) indicated below shad1 be applied. 3 Grade and designation The steel products shall be classified into 11 grades, and their designation shall be as given in table 1. PROTECTED BY COPYRIGHT -,-,- 2 G 3106 : 2004 SM400A SM400B SM4OOC SM490A Table 1 Designation of grade Steel plate, ste
19、el strip in coil, section and flat 200 or under Steel plate, steel strip in coil and section 100 or under Flat 50 or under Steel plate, steel strip in coil, section and flat 200 or under Designation of grade I Applicable thickness rnm SM490YA SM490YB SM520B SM520C Steel plate, steel strip in coil, s
20、ection and fiat 100 or under Steel plate, steel strip in coil, section and flat 100 or under Steel plate, steel strip in coil and section 100 or under Flat 40 or under SM490B I SM570 SM49OC Steel plate, steel strip in coil and section 100 or under 1 Flat 50 or under Steel plate, steel strip in coil
21、and section 100 or under Flat 40 or under 4 Chemical composition 10.1 and the ladle analysis value shall be in accordance with table 2. The steel products shall be tested in accordance with PROTECTED BY COPYRIGHT 3 G 3106 : 2004 SM400B Table 2 Chemical composition Over 50 mm up to and incl. 200 mm i
22、n thickness 50 mm or under in thickness 0.25 max. 0.20 max. Unit: % Symbol of grade C SM400A I 50 mm or under in thickness 0.23 max. I Over 50 mm up to and incl. 200 mm in thickness 0.22 max. 100 mm or under in thickness 0.18 max. sM400c I SM490A I 50 mm or under in thickness 0.20 max. Over 50 mm up
23、 to and incl. 200 mm in thickness 0.22 max. SM490B 50 mm or under in thickness 0.18 max. Over 50 mm up to and incl. 200 mm in thickness 0.20 max. 0.18 max. SM490YB 0.20 max. si I Mn I 2.5 X C 0.035 min.() rnax. - I I qzTL 0.35 0.60 to 0.035 0.35 I 2 : . 10.035 max. rnax. ChIl 1 1.60 0.035 max. max.
24、max. l.60 0.035 max. niax. max. S 0.035 max. 0.035 max. 0.035 max. 0.035 max. 0.035 max. 0.035 max. 0.035 max. 0.035 max. 0.035 max. Note (1) The value of carbon shall be applied the values of the actual ladle analysis. Remarks i. Alloying elements other than those given in table 2 may be added as n
25、ecessary. 2 The chemical composition of the steel plate of which thickness is over 100 mm up to and including 150 mm in thickness of SM520B, SM520C and SM570 shall be in accordance with the agreement between the purchaser and the supplier. 5 Carbon equivalent or chemical composition on sensitivity o
26、f welding crack 5.1 Carbon equivalent or chemical composition on sensitivity of welding crack for SM570 The carbon equivalent or chemical composition on sensitivity of welding crack for SM570 shall be as follows: Further, the carbon equivalent shall apply to quench-hardened and tempered steel produc
27、ts. a) The carbon equivalent shall be calculated from the following formula by using the ladle analysis values of 10.1 and shall be in accordance with table 3. Carbon equivalent (%) = (1) C+- +-+-+-+-+- . Mn Si Ni Cr Mo V 6 24 40 5 4 14 PROTECTED BY COPYRIGHT -,-,- 4 G 3106 : 2004 0.47 max. I max. I
28、 Carbon equivalent % Table 3 Carbon equivalent As agreed upon between the purchaser and supplier. I Thickness of steel product mm I 50 max. I Over 50 up to and incl. 100 I Over 100 Thickness of steel product mm 50 max. Over 50 up to and incl. 100 Over 100 b) Chemical composition on sensitivity of we
29、lding crack may be applied instead of carbon equivalent subject to the agreement between the purchaser and supplier. In this case, the chemical composition on sensitivity of welding crack shall be calculated from the following formula by using the ladle analysis value of 10.1 and shall be in accorda
30、nce with table 4. Chemical composition on sensi- tivity of welding % Chemical composition on sensitivity of welding crack (%) = 0.28 max. 0.30 max. As agreed upon between the purchaser and supplier. (2) Si Mn Cu Ni Cr Mo V 30 20 20 60 20 15 10 ; ; +-+-+5B . C+-+- +- SM490A SM490YA SM490B SM490YB SM4
31、90C Table 4 Chemical composition on sensitivity of welding crack SM520B SM520C Applicable thickness 50 mm or under 0.38 max. 0.40 max. Over 50 mm up to and incl. 100 mm 0.42 max. 0.40 max. 5.2 Carbon equivalent or chemical composition on sensitivity of welding crack for thermomechanically controlled
32、 steel plate The carbon equivalent of the steel plate which is thermomechanically controlled processed under the agreement between the purchaser and supplier and the chemical composition on sensitivity of welding crack applied as substitute for the carbon equivalent under the agreement between the p
33、urchaser and supplier shall be as follows: a) The carbon equivalent The carbon equivalent shall be calculated from the formula (1) of 5.1 by using the ladle analysis value of 10.1 and shall be in ac- cordance with table 5. Table 5 The carbon equivalent Unit: % Designation of grade Remarks : The carb
34、on equivalent of the steel plate over 100 mm in applied thickness shall be in accordance with the agreement between the purchaser and the supplier. b) Weld cracking susceptibility of material Weld cracking susceptibility of material shall be calculated from the formula (2) of 5.1 by using the ladle
35、analysis value of 10.1 and shall be in accordance with table 6. PROTECTED BY COPYRIGHT -,-,- 5 G 3106 : 2004 Applicable thickness Table 6 The weld cracking susceptibility of material Unit: % 50 mm or under Over 50 mm up to and incl. 100 mm 0.24 max. 0.26 max. Designation of grade SM490A SM49OYA SM49
36、0B SM490YB SM490C SM520B SM520C 0.26 max. Remarks : The weld cracking susceptibility of material of the steel plate over 100 mm in applied thickness shall be in accordance with the agreement between the purchaser and the supplier. 6 Mechanical property 6.1 Yield point or proof stress, tensile streng
37、th and elongation The steel products shall be tested in accordance with 10.2 and the yield point or proof stress, tensile strength and elongation shall be in accordance with table 7. PROTECTED BY COPYRIGHT -,-,- 6 G 3106 : 2004 4 4 0000 z z z z m d d b i 4 4 0000 z z z z m d “ * m m w 600 z z 2 O w
38、u 5 O w u 3 E E O * o om Pr- m O * o 0 - aw bi O * o o * “W m 2 .i I “ E 1 E E 2 z a h N v Y H m ai Y m cci O m m : u 3 E .i * E u; .B m E 5: .i * E 3 .i “ E O CI E CD PROTECTED BY COPYRIGHT 7 G 3106 : 2004 Designation of grade 6.2 Charpy absorption energy The steel products over 12 mm in thickness
39、shall be tested in accordance with 10.2 and the Charpy absorption energy shall be as given in table 8. The Charpy absorption energy in this case shall be expressed by the average of measured values of three test pieces and shall be judged by 9.6 of JIS G 0404. Test temperature Charpy absorption ener
40、gy Test piece Table 8 Charpy absorption energy SM4OOB SM400C SM490B SM490C O 27 min. V-notch test piece O 47 min. O 27 min. O 47 min. in rolling direction O C - SM520C SM570 J O 47 min. -5 47 min. I SM490YB I O I 27 min. I I SM520B I O I 27 min. I 7 Shape, dimension, mass and the tolerance thereon T
41、he shape, dimension, and mass of the steel products and the tolerance shall be in accordance with the following standards; JIS G 3192, JI$ G 3193, JIS G 3194 In this case, the width tolerances for the steel plate and cut-edged coil as well as the length tolerances for the steel plate shall be in acc
42、ordance with the tolerance A in JIS G 3193 unless particularly specified. 8 Appearance The appearance of the steel products shall be in accordance with clause 9 in JIS G 3192, clause 6 in JIS G 3193 or clause 8 in JIS G 3194. Further, the repair by welding of the steel plate of SM570 shall be previo
43、usly agreed between the purchaser and the supplier. 9 Heat treatment and symbol 9.1 Heat treatment The steel products may be subjected to normalizing, quench- hardening and tempering, or tempering, as necessary. For all designations of grade, heat treatment such as thermomechanical control process m
44、ay be applied under the agreement between the purchaser and the supplier. 9.2 Symbol of heat treatment When the steel products have been subjected to heat treatment, the symbol of heat treatment shall be as follows: Further, in appending the symbol of heat treatment according to the following manner
45、, the symbol shall additionally be written to the end of the symbol of grade given in table 1. PROTECTED BY COPYRIGHT -,-,- 8 G 3106 : 2004 a) b) c) d) e) In the case where normalizing is applied for the steel products by agreement between the purchaser and manufacturer: N In the case where temperin
46、g is applied for the steel products by agreement be- tween the purchaser and manufacturer: T In the case where quench-hardening and tempering is applied for the steel products: Q In the case where thermomechanical control is applied for the steel products: TMC In the case where appropriate heat trea
47、tment is applied for the steel products: By agreement Example of symbols: SM 490 CN, SM 570 TMC 10 Tests 10.1 Chemical analysis Chemical analysis shall be as follows. 10.1.1 Generals requirements for chemical tests The chemical composition of the steel products shall be determined by ladle analysis,
48、 and general requirements for chemical analysis and the sampling method of specimen for analysis shall be as specified in clause 8 in JIS G 0404. 10.1.2 Analytical method dance with any one of the following standards: The method for chemical analysis shall be in accor- JIS G 1211, JIS G 1212, JIS G 1213, JIS G 1214, JIS G 1215, JIS G 1216, JIS G 1217, JIS G 1218, JIS G 1219, JIS G 1221, JIS G 1227, JIS G 1238, JIS G 1253, JIS G 1256, JIS G 1257, JIS G 1258 10.2 Mechanical test 10.2.1 Test in general Gen