Jis g 3136 1994 rolled steels for building structure

UDC 669.14.018.29-122 N¿-ÔM JAPANESE Rolled INDUSTRIAL steels STANDARD for building structure » 3 G S I J ) @ Translated and Published by Japanese Standards Printed Association in Japan 108 a In the event andard the ori ginal St f any doubt arisi ng; to be in Japane se is final authority UDC JAPANESE INDUSTRIAL 669.14.018.29-122 STANDARD Rolled steels for building structure Scope This Japanese Industrial Standard JIS G 3136-1994 specifies the hot-rolled steel products (hereafter referred to as "steel product") used for structural members buildings Remarks: and The Table standards Grade and symbol their symbols cited in this Standard are given in Attached The steel product shall be classified into five categories, shall be as given in Table Table 1 Symbol of grade Symbol of grade SN 400A Unit: mm Applicable thickness plate, coil, section and flat: or over, up to 100 incl Steel SN 400 C Steel plate, coil, section and flat: 16 or over, up to 100 incl SN 490B Steel plate, coil, section and flat: SN 490 C Steel coil, section and flat: SN 400 B Remarks: When for plate, or over, up to 100 incl 16 or over, up to 100 incl the steel plate and flat are subjected to ultrasonic test by agreement between the purchaser and supplier, the symbol "_UT" shall be suffixed to the symbol of grade given in Table for designation Example: of those steel products SN 400 B-UT SN 490 B-UT G 3136-1994 38 Chemical composition The steel product shall be tested in accordance with 10.1 and the cast analysis values thereof shall be as given in Table Table grade Chemical c f composition si Mn _— — SN 400A mm or over, up to 100 mm incl in thickness 0.24 max SN 400 B mm or over, up to 50 mm inel in thickness 0.20 max | 0.35 max | 0.60 to 1.40] Over 50 mm, up to 100 mm inel in thickness 0.22 max SN 400 C 16 mm or over, 50 mm incl in thickness SN 490 B up to | 0.20 max 0.22 max mm or over, up to 50 mm incl in thickness 0.18 max | 0.55 max | Over 0.20 max 50 mm, up to 100 mm incl in thickness SN 490 C 16 mm or over, up to | 0.18 max | 0.55 max | 50 mm incl in thickness Over 50 mm, up to 100 mm incl in s P % 0.050 max | 0.050 max 0.030 max | 0.015 max | 0.35 max | 0.60 to 1.40 | 0.020 Over 50 mm, up te 100 mm incl in thickness Unit: max |0.008 max 1.60 max | 0.030 max |0.015 max 1.60 max | 0.020 max | 0.008 max 0.20 max thickness Remarks Alloying elements The chemical compositions other than those given in Table which as necessary other than those given in Table may be added are involved in the formula in for calculation of the carbon equivalent or the chemical composition on sensitivity of welding crack shall be determined in accordance with 10.1 Carbon equivalent or chemical composition on sensitivity of welding crack 4.1 Carbon equivalent and chemical composition on sensitivity of welding crack The carbon equivalent or the chemical composition on sensitivity of welding crack for the steel product shall be as follows: (1) The carbon equivalent shall be as given in Table The carbon equivalent shall be calculated from the following formula by using the cast analysis values obtained by 10.1 In this case, all elements designated in the formula shall be used for calculation disregarding that those elements are intentionally added or not ; Mn, Carbon equivalent (%) = C +e Si Ni Cr Mo, V +ogtgg ts ta +14 G 3136-1994 Table Symbol! of Carbon Carbon grade equivalent equivalent % 40 mm or under | Over 40 mm, in thickness incl 100 mm SN 400 B up to and in thickness 0.36 max 0.36 max 0.44 max 0.46 max SN 400 C SN 490B SN 490 C (2) The chemical composition on sensitivity of welding crack may be applied instead of the carbon equivalent subjected to the agreement between the purchaser and supplier In this case, the chemical composition on sensitivity of welding crack shall be as given in Table The chemical composition on sensitivity of welding crack shall be calculated from the following formula by using the cast analysis values obtained by 10.1 With this respect, all elements designated in the formula shall be used for calculation disregarding that those elements are intentionally added or not : Chemical composition on sensitivity of welding crack (%) Si Mn Cu Ni Cr Mo V = C +39 +90 +20 *60 +30 t 15 + anIo Table Chemical composition on sensitivity of welding Symbol of grade Chemical composition on sensitivity of welding crack % SN 400 B 0.26 max + 5B crack SN 400 C SN 490 B 0.29 max SN 490 C 4.2 Carbon equivalent and chemical composition on sensitivity of welding crack for thermo-mechanically controlled steel plate The carbon equivalent for the thermo-mechanically controlled steel plate by agreement between the purchaser and supplier and its calculation formula shall be as given in Annex Further, the chemical composition on sensitivity of welding crack may be applied instead of the carbon equivalent subjected to the agreement between the purchaser and supplier The chemical composition on sensitivity of welding crack and its calculation formula, in this case, shall be as given Mechanical properties 5.1 Yield point or proof stress, tensile strength, in Annex yield ratio and elongation The steel product shall be tested in accordance with 10.2, and the yield point or proof stress, tensile strength, yield ratio and elongation thereof shall be as given in Table Yield point or proof stress, tensile strength, yield ratio and elongation Symbol of grade Yield point or proof stress Tensile strength N/mm? Yield ratio Elongation % % No 1A Thickness of steel product(!) or over, | 12 or over, to and to and excl 12 16 | excl 16 incl 40 SN 400 Aj 235 | 235 | 235 SN 400B @®) 235 | 235 to () 235 to Not 235 to 355 incl | 355 incl SN 400C SN 490 B SN 490C Notes mm @) Not Thickness of steel product(?) Over 16, | Over 40, up to and | up to and or over, | 12 or over, to and to and incl 100 excl 12 _ —_ 235 to 215 to — @) 80 max 235 to 215 to 355 incl | 335 incl Not applicable | applicable | 355 incl | 385 incl | 335 incl 325 Not |325to ) 445 incl | 445 incl Not applicable | applicable) (‘) @) | 325 to @ 325 to 445 incl, Not 445 incl | 415 incl 295 to — — Not In the case of the steel section, its thickness test piece Thickness of steel product(?} incl 100 | incl 16 — (3) 80 max | _ 80 max | 80 max mm incl 50 incl 100 17 21 23 18 22 24 @ Hi 80 max | 80 max | 80 max @® @) 80 max | 80 max | 80 max | 80 max | 17min, | 21min | 23 Not @) ñ i | 80 max | applicable applicable 445 incl | 415 incl mm No Over 16, | Over 40, | or over, | Over 16, | Over 40, up to and | up to and | up to and | up to and | up to and incl 40 applicable| applicable 325 to | 295to | 490 to 325 to i 16 | excl 16 235 | 215 | 400 to 510 inet No 1A test piece | test piece | N/mm? 80 max 80 max shall be as given in the following: (1) For the H section, the dimension ¢2 in Table (2) For the angle, bulb flat and T section, the dimension ¢ or ta in Table (3) For the I section and channel, the dimension 12 shall be applied ¢; in Table 11 shall be applied 11 shall be applied (7?) For the H section, when the ¢, given in Table 12 is mm or less, the upper limit of the yield point or proof @® For the H section, when the ¢, given in Table 12 is mm 8ã % or less, the upper limit of the yield ratio shall be stress shall not be applied ÿ66T-9ETE Ð E Table G 3136-1994 5.2 Charpy absorption energy The steel product over 12 mm in thickness shall be tested in accordance with 10.2, and the Charpy absorption energy thereof shall be as given in Table The Charpy absorption energy, in this case, shall be expressed by the average of measured values of three test pieces Table Symbol grade of | Charpy absorption energy Test temperature Charpy absorption 27 °C SN 400 B energy Test piece J SN 400 C No 4, in rolling direction SN 490 B C SN 490 C 5.3 Through-thickness accordance with 10.3, and characteristics The steel product shall be tested in the through-thickness characteristics thereof shall be as given in Table Table Symbol grade of Through-thickness Thickness of Contraction % steel product Average mm SN 400 C and SN 490 C Ultrasonic test inel of three | Individual tested values 16 or over, up to ———————— characteristics 100 tested value 25 15 The steel plates and flats of grades SN 400B and SN 490 B 13 mm or over in thickness and of grades SN 400 C and SN 490 C 16 mm or over in thickness shall be tested in accordance with 10.4, and the application and acceptance criteria shall be as given in Table Table Symbol of | Thickness of steel grade plate and flat Ultrasonic test Application Acceptance criteria mm 8N 400B | 18 and over, up to | JIS G 0901 shall be applied by agreement | According to the and incl 100 between the purchaser and supplier acceptance criteria, SN 400 C } 16 and over, up to { According to JIS G 0901 and incl, 100 SN 490 B } 13 and over, up to | JIS G 0901 shall be applied by agreement and incl 100 between the purchaser and supplier SN 490 C | 16 and over, up to | and incl 100 According to JIS G 0901 Class Y, specified in JIS G 0901 G 3136-1994 Shape, dimensions, mass and tolerances thereof The shape, dimensions and mass of the steel product and the tolerances thereof shall be in accordance with the following standards: JIS G 3192, In this case, JIS G 3193, JIS G 3194 the following matters shall also be satisfied (1) The width tolerances for the cut-edged steel plate and coil and the length tolerances for the steel plate shal] be in accordance with Class A tolerance given in JIS G 3193 unless otherwise specified (2) The tolerances on thickness for the steel plate and coil shall be as given in Table (3) The tolerances on thickness for the steel flat shall be as given in Table 10 (4) The tolerances on thickness for the steel section shall be as given in Tables 11 and 12 Table Tolerances on thickness for steel plate and coil Unit: mm Thickness Width cai 1600 | torand excl.” | to-and excl.” | to and excl” | to-end excl.” | to-and excl.” 2000 2600 3150 4000 5000 6.00 or over, to and excl 6.30 + 0.70 + 0.90 + 0.90 + 1.20 + 1.20 — 6.30 or over, to and excl 10.0 + 0.80 + 1.00 + 1.00 + 1.30 +130 + 1,50 10.0 or over, to and excl 16.0 + 0.80 + 1.00 + 1.00 + 1.30 + 1.30 +1.70 16.0 or over, to and excl 25.0 + 1.00 + 1.20 + 1.20 + 1.60 + 1.60 + 1.90 25.0 or over, to and excl 40.0 + 1.10 +1.30 +1.30 +1.70 +1.70 +2.10 40.0 or over, to and excl 63.0 + 1.30 + 1.60 + 1.60 + 1.90 + 1.90 + 2,30 63.0 or over, to and excl 100 + 1.50 +1.90 + 1.90 + 2.30 + 2.30 + 2.70 100 + 2.30 + 2.70 + 2.70 +3.10 +3.10 +3.50 Remarks The minus side of thickness tolerance shall be 0.3 mm The thickness shall be measured at any point not less than 25 mm from a side edge for the mill-edged steel coil 50 mm or over in width and cut-to-lengths therefrom, while at any mid-width position for those less than 50 mm in width, For the cut-edged steel coil 30 mm or over in width and cut-to-lengths therefrom, measurement shall be made at any point not less than 15 mm from a side edge, while at any mid-width position for those less than 30 mm in width Further, the thickness shall be measured at any point inward the scheduled cutting line concerning the width for the as-rolled steel plate (with untrimmed edge), while at any point not less than 15 mm from a side edge for the cut-edged steel plate G 3136-1994 Table Tolerances on thickness for steel flats Unit: mm 10 Thickness 6.0 or over, to and excl 12 +0.5 12 or over, to and excl 25 +11 25 or over, to and excl 40 + 1.4 40 or over, up to and Remarks: Table Tolerance 11 incl 100 +2.1 The minus side of thickness tolerances shall be 0.3 mm Tolerances on thickness for steel angle, I section, channel, bulb flat and T section Unit: mm Thickness (¢, t2) Tolerance 6.0 or over, to and excl 16 16 or over, to and excl 40 40 or over, up to and incl Remarks: + 0.9 - 0.3 +1.3 -0.7 100 +1.5 Symbols A, B, H and é, given in the below figures are those speci- > ty fied in Table in JIS G 3192 sting al| } É: Ip—1,18~t] wel] alt ty aclu G 3136-1994 Table 12 Tolerances on thickness for H steel section Unit: Thickness (¢2) Tolerance 6.0 or over, to and excl 16 +17 16 or over, + 2.3 to and - 0.3 excl 40 40 or over, up to and incl Remarks: mm -0.7 100 + 2.5 —1.5 Symbols B, H and ¢, given in the below figure are those specified in Table of JIS G 3192 : [ | J ve mie The appearance of the steel product shall be in accordance Appearance with (Appearance) in JIS G 3192, (Appearance) in JIS G 3193 or (Appear- ance) in JIS G 3194 Heat treatment 9.1 Heat treatment and tempering as necessary When agreed upon symbol The steel product between Symbol of heat treatment by a heat treatment, Further, the symbol When and supplier, or the steel product control or an appropriate heat treatment the steel product having been processed indicating heat in the case to append by normalizing be processed the purchaser may be processed by thermo-mechanical 9.2 may the symbol treatment shall be as follows of heat treatment according to the following instances, the symbol shall be suffixed to the symbol of grade given in Table (1) (2) (3) (including the symbol "-UT" in Remarks of Table 1) In the case where the steel product is subjected to normalizing upon agree- ment; N In the case where the steel product is subjected to tempering upon agree- ment; T In the case where the steel product is subjected to thermo-mechanically control processing; TMC G 3136-1994 (4) In the case where the steel product treatment; By agreement 10 is subjected to an appropriate heat Test 10.1 Chemical analysis 10.1.1 General requirements specimen for analysis determined for chemical analysis and sampling method of The chemical composition of the steel product shall be by cast analysis, and the general requirements for chemical analysis and the sampling method of specimen for analysis shall be as specified in (Chemical composition) of JIS G 0303 10.1.2 Analytical method The method for chemical analysis shall be in accor- dance with any one of the following standards: 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 10.2 1227, JIS G 1252, JIS G 1253, JIS G 1256, JIS G 1257 Mechanical test 10.2.1 Test in general General requirements for mechanical testing shall be as specified in (Mechanical properties) of JIS G 0303 With this respect, the sampling method of specimen shall conform to Class A, and number of test pieces and sampling positions shall be as follows: (1) Number ollows: (a) of tensile test pieces The number of tensile test pieces shall be as Steel plate and flat A test lot shall consist of the steel products from one heat where the maximum thickness is within twice the minimum thickness, and one tensile test piece shall be taken therefrom When the mass of one test lot exceeds shall be taken 50 t, however, two tensile test pieces With this respect, if a single steel plate exceeds 50 t, one test piece shall be taken from the said plate (b) Steel coil and cut-to-lengths steel products from one heat therefrom A test lot shall consist of the rolled to the same thickness, and one tensile test piece shall be taken therefrom When the mass of one test lot exceeds 50 t, however, two tensile test pieces shall be taken (c) Steel section A test lot shall consist of the steel sections from one heat rolled to the same sectional profile where the maximum thickness is within twice the minimum thickness, and one tensile test piece shall be taken therefrom When the mass of one test lot exceeds 50 t, how- ever, two tensile test pieces shall be taken (d) Number of test pieces for heat treated steel product The number of test pieces for the heat treated steel products composed of the same heat rolled to the same sectional profile subjected to heat treatment under the same treatment conditions shal] be determined in accordance with (a), (b) or (c) in this item, (2) respectively Number of impact test pieces For the steel products which have not been heat treated, one specimen shall be taken from the maximum thickness product of a test lot composed of the same heat rolled to the same sectional profile, while for the steel product having been heat treated, one specimen 10 G 3136-1994 shall be taken from the maximum thickness product of a test lot composed the same heat rolled to the same sectional profile subjected to heat treat- of ment under the same treatment conditions, then three test pieces shall be taken (3) from Sampling the specimen position along the rolling direction of tensile test piece test piece shall be as follows: (a) sampling position of the tensile The centre of the test piece shall be at a Steel plate, coil and flat quarter-width The side edge, position from a and further in the case of No test piece, it shall be at a quarter-thickness position from a surface as well as at a quarter-width position from a side edge When it is infeasible to allow the centre of the test piece to be at a quarter-width position from a side edge or a quarter-thickness position from a surface, however, the sampling should be performed as close to the aforementioned position as possible (b) It shall be as shown in Fig In the case where the Steel section position in Fig is not applicable, the sampling should be performed as close to the aforementioned position as possible With this respect, for the H steel section of which the side (B) is too small to ensure the sampling position in Fig 1, the sampling should be performed as close to the aforementioned position in the side (B) as possible When it is unable to take a test piece from the portion as shown in Fig supplier (4) Sampling 1, this matter position of impact test piece shall be as follows: (a) Steel plate, coil and flat shall be agreed test piece The The centre between sampling the purchaser and position of the impact of the test piece shall be at a quarter-thickness position from a surface as well as a quarter-width position from a side edge When it is infeasible to allow the centre of as the test piece to be at a quarter-thickness position from a surface samthe well as a quarter-width position from a side edge, however, pling should be performed as close to the aforementioned position as possible (b) Steel section The centre of the test piece shall be at a quarter-thick- ness position from a surface (see Fig 1) When it is infeasible to allow the centre of the test piece to be at a quarter-thickness position from a to the surface, however, the sampling should be performed as close a test take to unable is it When aforementioned position as possible piece from the portion as shown in Fig 1, this matter shall be agreed between the purchaser and supplier 11 G 3136-1994 Sampling position of test piece for steel section Fig Angle with unequal legs and thicknesses Angle with unequal legs Angle with equal legs = = | TM TAA z8 B 4B — B T-section Channel Bulb flat — T x me Ss] B 4B HÌ T r kì — ES | › H-section I-section B = œ — Als — | 177 —— Test piece 10.2.2 lows: _(1) No A or No The tensile test piece and impact test piece shall be as fol- test piece specified in JIS Z 2201 12 G 3136-1994 (2) No test piece specified in JIS Z 2202 through-thickness one 10.2.3 follows: Test method (1) JIS Z 2241 (2) Charpy 10.2.4 The for tensile test and impact test shall be as impact test method specified in JIS Z 2242 Tensile test in the case where fied due to the dimensions specified method In this case, the notch shall be the due to the tensile test piece can not be taken In the case where it is unable dimensions, matters on execution as speci- to take a test piece as of the tensile test, testing values or the like shall be as agreed upon between the purchaser and supplier 10.3 Through-thickness characteristics test The test method thickness characteristics shall be as given in JIS G 3199 10.4 Ultrasonic test The method JIS G 0901 11 Inspection 11.1 Inspection The inspection for the through- for the ultrasonic test shall be as given in shall be carried out as follows: (1) General requirements for inspection shall be as specified in JIS G 0303 (2) The chemical composition shall conform to the requirements specified in (3) The carbon equivalent or chemical composition on sensitivity of welding crack shall conform to the requirements specified in (4) The mechanical shall conform to the requirements specified in (5) The ultrasonic test results shall conform to the requirements specified in (6) (7) 11.2 (1) The shape, dimensions in 7, The appearance Reinspection and mass shall conform to the requirements specified shall conform to the requirements specified in The reinspection shall be carried out as follows: The steel product which has not passed the tensile test may be retested in accordance with 4.4 (Retest) in JIS G 0303, and then it may be determined whether (2) properties it is acceptable or not The reinspection on impact test shall be carried out as follows: (a) When the mean value of three test pieces in the impact test does not satisfy the specified value in Table and also it is 85 % and over of the said specified value, three additional test pieces for retesting shall be taken from the identical specimen in the vicinity where the original test pieces have been taken, and as far as the average of the tested values of the six test pieces is not less than the specified value in Table 6, all the steel products of the same heat rolled to the same sectional profile subjected to the same heat treatment conditions shall be accepted However, in the case where the average of the tested values of the new three test pieces is less than 85 % of the specified value, or the average of the tested values of the six test pieces obtained by the retesting fails to meet the specified value, the steel products sampled 13 G 3136-1994 specimens shall be considered as unacceptable While, a further test may be applied for each piece of the other steel products rolled to the same thickness which have not been taken the specimen, by which each piece may be determined as acceptable or not, respectively When even one piece of the steel product of the largest thickness fails, a retest shall be additionally carried out as mentioned below (b) A retest shall be carried out on the thickest steel products among the remainders of the same heat rolled to the same sectional profile subjected to the same heat treatment conditions in the same way as the first test In this case, when the tested value is not less than the specified value in Table 6, all the remaining steel products of the same heat rolled to the same sectional profile subjected to the same heat treatment conditions shall be accepted (3) A reinspection on through-thickness in accordance with JIS G 3199 (4) The steel products which have not passed the mechanical test may be again subjected to the mechanical test after heat-treatment or reheat-treatment, and then it may be determined whether they are acceptable or not 12 Markin characteristics test shall be carried out The steel product which has passed the inspection shall be marked on each piece or each bundle with the following items by suitable means However, a part of the items may be omitted subjected to the agreement between the purchaser and supplier (1) Symbol of grade (including symbols test and heat treatment) which express execution (2) Heat number or inspection number (3) Dimensions (4) Quantity or mass of each bundle (for steel plate and coil) (5) Manufacturer's name of ultrasonic or identifying brand 13 Report The manufacturer shall submit to the purchaser a test report which describes test results, method of manufacture, specified dimensions quan- tity, supplying conditions of the product itself, identifying number that is able to trace the manufacturing history from the steel product to melting process, or the like Further, content of elements specified in the formula for calculation of carbon equivalent or chemical composition on sensitivity of welding crack shall be additionally stated In addition, when Remarks of Table is applied, the content of added element(s) shall be additively described in the test report 14 G 3136-1994 Attached Table Cited standards rules for inspection of steel JIS G 0303 General JIS G 0901 Classification of structural rolled steel plate and wide building by ultrasonic test of carbon in iron and flat for steel JIS G 1211 Methods for determination JIS G 1212 Methods for determination of silicon in iron and steel JIS G 1213 Methods for determination JIS G 1214 Methods for determination of phosphorus in iron and steel JIS G 1215 Methods for determination of sulfur in iron and steel JIS G 1216 Methods for determination JIS G 1217 Methods for determination of chromium in iron and steel JIS G 1218 Methods for determination JIS G 1219 Methods for determination of copper in iron and steel JIS G 1221 Methods for determination of vanadium JIS G 1227 Methods for determination of boron in iron and steel JIS G 1252 Emission-spectroscopic JIS G 1253 Method for photoelectric emission spectrochemical analysis of iron and steel JIS G 1256 Method for X-ray steel of nickel in iron and steel in iron and of molybdenum fluorescence steel in iron and steel analysis for carbon steel and steel in iron and of manganese steel and low spectrometric alloy analysis of iron for atomic absorption spectrometric JIS G 1257 Iron and steel—Methods analysis JIS G 3192 Dimensions, sections JIS G 3193 Dimensions, mass and permissible plates, sheets and strip JIS G 3194 Shape, JIS G 3199 Specification for through-thickness characteristics of steel plate and wide flat JIS Z 2201 Test pieces for tensile test for metallic JIS Z 2202 Test pieces for impact test for metallic materials JIS Z 2241 Method of tensile test for metallic materials JIS Z 2242 Method of impact test for metallic materials mass dimension, and permissible weight and variations of hot rolled st variations of hot rolled steel tolerance for hot rolled flat steel materials 15 G 3136-1994 Annex plate which is processed by Carbon equivalent of steel thermo-mechanical control l plate carbon equivalent of the stee This Annex specifies the Scope rmo-mechanical control which is processed by the rmo-mechanical e which is processed by the plat l stee of t len iva equ Carbon control_ ivalent shall be The carbon equ bon equivalent values obtained Calculation formula of car 2.1 by using the cast analysis a mul for ing low fol the calculated from by 10.1 of the body d for calcuin the formula shall be use d ate ign des ts men ele all In this case, ionally added or not those elements are intent lation disregarding t hat Cr5 +2,Mo, *14V Ni, Si Mn ; 401 equivalent Carbon Carbon equivalent 2.2 Table SN 490 B SN 490 C +54† be as given in Annex The carbon equivalent shall Annex Symbol of grade (%) = C me Table Carbon equivalent Carbon equivalent % ——————— to 100 mm Up to and incl 50 mm in thickness 0.38 max Over 50 mm incl in thickness 0.40 max 16 G 3136-1994 Annex Chemical composition on sensitivity of welding crack for steel plate which is processed by thermo-mechanical control Scope This Annex specifies the chemical composition on sensitivity of welding crack for the steel plate which is processed by thermo-mechanical control Chemical composition on sensitivity of welding crack for steel plate which processed by thermo-mechanical control is 2.1 Calculation formula of chemical composition on sensitivity of welding crack The chemical cmposition on sensitivity of welding crack shall be calculated from the following formula by using the cast analysis values obtained by 10.1 of the body lation In this case, all elements designated in the formula shall be used for calcudisregarding that those elements are intentionally added or not Chemical composition on sensitivity of welding crack (%) —a,5i,Mn Cụ Ni Cr Mo V = € +39 +90 +30 * 60 † 20 †“1s + 1g + OB 2.2 Chemical composition on sensitivity of welding crack The sition on sensitivity of welding crack shall be as given in Annex Annex Table Symbol of grade SN 490 B SN 490 C Chemical composition chemical Table on sensitivity of welding Chemical composition on sensitivity of welding crack Up to and incl 50 mm in thickness 0.24 max, Over 50 mm to 100 mm incl in thickness 0.26 max compo- crack % JAPANESE INDUSTRIAL @JIS Rolled G steels STANDARD 3136:1994 for building structure September, 1997 ERRATA Page 12 (2)(a) In of line from pieces -", three Remarks : This 11.2 the test the subclause test bottom, so that pieces errata is replace reads is for as less "the new three test 85% correcting the of the Ist and specified 2nd INDUSTRIAL Testing method fine for ceramics R value, editions Japanese JI§ by “the three follows: than JAPANESE pieces ” of or this Standards the Standard Association STANDARD 1627:1996 dielectric at properties microwave of frequency September, 1997 ERRATA Page (3)(f) In line standard of clause 5, replace specimen Remarks: This "(5)" of lower errata is by "Fig.5", height for in so Fig.5 correcting that reads and the shifts first Japanese as follows: to the edition low of Standards frequency this Standard Association