JIS-G-3315-2002-ENG.pdf
Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Chromium plated tin free steel ICs 25.220; 77.140.50 Reference number : JIS G 3315 : 2002 (E) PROTECTED BY COPYRIGHT 18 S Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- G 3315 : 2002 Foreword T h i s translation has been made based on the original Japanese Industrial 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 attached, 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 3315 : 1987 is replaced with this Standard. In this revision, in order to conform JISs to International Standard, IS0 11950 : 1995 Cold-reduced electrolytic chromium /chromium oxide-coated steel is adopted as the base. Attention is drawn to the possibility that some parts of this Standard may conflict 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 for 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: 1984-02-01 Date of Revision: 2002-06-20 Date of Public Notice in Official Gazette: 2002-06-20 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Iron and Steel JIS G 3315 : 2002, First English edition published in 2003-01 Translated and published by: Japanese Standards Association 4-1-24, Akacaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2003 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, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- G 3315 : 2002 Contents Introduction . 1 2 3 3.1 3.2 3.3 3.4 4 5 5.1 5.2 6 7 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 9 9.1 9.2 9.3 Scope Normative references Classification and symbol Symbol . Classification based on steel grade Classification based on temper designation . Classification based on surface finish . Coating mass Temper designation . Single cold-reduced product . Double cold-reduced product . Surface finishes . Oiling to surface Dimensions and shape Thickness and tolerances . Width tolerances Length tolerances Marking of rolling width Inside diameter of coil Squareness Camber Flatness . Mass . Dealing with mass . Calculating method . Mass tolerance . Page 1 1 1 2 2 2 2 2 2 2 2 3 4 4 4 4 5 5 6 6 6 6 6 6 6 6 7 (i) PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- G 3315 : 2002 10 Appearance . 11 Steel for stock sheet 12 Test specimen and test piece 12.1 Test specimen . 12.2 Test piece 13 Test 13.1 Coating mass test 13.2 Hardness test . 14 Inspection 15 Packaging and marking 15.1 Marking of sheet 15.2 Marking of coil . Annex 1 (normative) Test methods for determining metallic chromium coating mass of chromium plated tin free steel Annex 2 (normative) Test method for determining coating mass of hydrated chromium oxide for chromium plated tin free steel Annex 3 (normative) Springback test method . 7 8 8 8 8 8 8 8 9 9 9 10 11 17 21 Annex 4 (informative) Comparison table between JIS and corresponding International Standard . 23 (ii) PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS G 3315 : 2002 Chromium plated tin free steel Introduction This Japanese Industrial Standard has been prepared based on IS0 11950 issued in 1995 as the first edition Cold-reduced electrolytic chromium lchro- mium oxide-coated steel, however, since provisions of the classes and the frequency for sampling are extremely different, in this Standard some technical contents are modified. Although Japanese Industrial Standard wherein IS0 11950 : 1995 is translated and prepared into JIS without modifying the technical contents is established as another standard JIS G 7122 Cold-reduced electrolytic chromium /chromium oxide-coated steel, they are planned to be unified in the future by proposing a revision of the ISO. 1 Scope This Standard specifies the single cold-reduced chromium plated tin free steel coated by electrolytic chromic acid processed on the low carbon steel base rolled to from 0.15 mm up to 0.60 mm in nominal thickness, and double cold-reduced chro- mium plated tin free steel of low carbon steel rolled to from 0.14 mm up to 0.36 mm in nominal thickness. Remarks 1 The term “single cold-reduced chromium plated tin free steel” means the single cold-reduced low carbon steel sheet coated by electrolytic chromic acid process. 2 The term “double cold-reduced chromium plated tin free steel” means the low carbon steel sheet coated by electrolytic chromic acid process which has received a second major cold reduction following annealing. 3 The chromium plated tin free steel involves those in sheet form and coil form, and the former is called the sheet, while the latter the coil. 4 The International Standard corresponding to this Standard is as fol- lows. 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 11950 : 1995 Cold-reduced electrolytic chromium /chromium ox- ide-coated steel (MOD) 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards (including amendments) indicated below shall be applied. JIS G 3303 Tinplate und blackplate JIS K 0050 General rules for chemical analysis JIS K O119 General rules for X-ray fluorescence spectrometric analysis JIS Z 2245 Rockwell hardness test-Test method JIS Z 8401 Guide to the rounding of numbers PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 G 3315 : 2002 Minimum average I coating mass 3 Classification and symbol Maximum average Minimum average Maximum average coating mass coating mass coating mass 3.1 Symbol The symbol of chromium plated tin free steel shall be SPTFS. 3.2 Classification based on steel grade Chromium plated tin free steel shall be classified as specified in 11 according to the type of stock sheet. 3.3 Classification based on temper designation Chromium plated tin free steel shall be classified as specified in 5 according to the temper designation. 3.4 be classified as specified in 6 according to the surface finish. Classification based on surface finish Chromium plated tin free steel shall 4 Coating mass The coated layer of chromium plated tin free steel is composed of dual layers which contain a metallic chromium layer and a hydrated chromium oxide layer, and respective coating masses are as given in Table 1, The coating mass of metallic chromium layer is expressed by mass of metallic chromium per 1 m2 of side (mg/mz while the coating mass of layer per 1 m 2 of side (mg/m2) in the coating of hydrated chromium oxide layer. Table 1 Coating mass Unit : mg/mz (one side face) I Metallic chromium layer I Hydrated chromium oxide layer Remarks : The minimum average coating mass and the maximum average coat- ing mass are applied to the arithmetic average value of three test specimens obtained in 12 and 13. 5 Temper designation 5.1 Single cold-reduced product The temper designation of single cold-reduced chromium plated tin free steel is expressed by Rockwell superficial hardness (HR30T). The target values of the manufacturer are given in Table 2. Other temper designa- tion than those in Table 2 shall be agreed upon between the manufacturer and the purchaser. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 G 3315 : 2002 Temper designation Target Rockwell superficial hardness HR30T T-1 T-2 1 T-2.5 I 5513 I I 4913 5313 T-3 Temper designation Target Rockwell superficial hardness HR3OT 5 7 i 3 Target Yield strength (informative) Parallel to rolling direction N/mm2 I T 4 I 6 1 i 3 I DR-8 DR-9 I T-5 I 6513 I 620 j-.I 73 76 Remarks 1 Though the quality of each temper designation of single cold-reduced chromium plated tin free steel can not essentially be expressed only by single mechanical characteristic, Rockwell superficial hardness is adopted as one of the most useful mechanical characteristics. DR-9M DR-10 2 690 77 80 The annealing method contains the batch annealing and continuous annealing, and even though hardness values expressed in HR30T obtained from those both processes are equal, other mechanical char- acteristics than hardness are not always consistent. Therefore, the purchaser may specify either of them subjected to agreement between the manufacturer and the purchaser. In the case where the con- tinuous annealing process is selected, the latter symbol CA is suf- fixed to the temper designation specified in Table 2. Example : T-4CA 5.2 Double cold-reduced product The temper designation of double cold-reduced chromium plated tin free steel is expressed in Rockwell superficial hardness (HR30T). The target value of the manufacturer is given in Table 3. Remarks 1 All factors which affect the work performance for double cold-reduced chromium coated tin free steel cannot exactly be enumerated, how- ever, Rockwell superficial hardness is adopted as the useful indica- tor of mechanical characteristics. 2 The yield strength, if required, should be determined for reference and it implies a converted yield strength obtained by the springback test specified in Annex 3. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 G 3315 : 2002 7 Product Letter symbol Classification Specific feature Single cold-reduced B Bright finish A smooth surface finish with a fine product grindstone-pattern 3 R M The annealing method contains the batch annealing and continuous annealing, and even though the hardness values expressed in HR30T obtained from those both processes are equal, other mechanical char- acteristics than hardness are not always consistent. Therefore, the purchaser may specify either of them by agreement with the manu- facturer. Stone finish A surface finish with a directional grindstone-pattern A dull surface finish Matte finish 6 Surface finishes The surface finishes for chromium plated tin free steel shall be classified according to the surface finishes of stock sheet as given in Table 4. Other surface finishes than those specified in Table 4 may be agreed upon between the manufacturer and the purchaser. Double cold-reduced product R Stone finish A surface finish with a directional grindstone-pattern 7 Oiling to surface face of metallic coating. For chromium plated tin free steel, oil is applied to the sur- Remarks : For the kind of oil to be coated, CSO, DOS, DOS-A, ATBC and the like are exemplified. 8 Dimensions and shape 8.1 Thickness and tolerances 8.1.1 Thickness The nominal thickness of chromium plated tin free steel shall be a multiple of 0.005 mm when it is under 0.50 mm, and a multiple of 0.05 mm when it is 0.50 mm and over. 8.1.2 Thickness tolerances Thickness tolerances to the nominal thickness for individual chromium plated tin free steels shall fall within f 10 % of the nominal thickness. In this case, the thickness shall be measured at any point on the sheets not less than 10 mm from either of both side edges. For double cold-reduced prod- ucts, the deviation between the thickness measured at points 6 mm from either of two side edges and the nominal thickness is defined as the traverse thickness pro- file tolerances, and it shall fall within O % to 15 % of the nominal thickness. Traverse thickness profile tolerance (%) = - - t6 x 100 t, where, tn : nominal thickness t6 : thickness of 6 mm from a side edge PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 20:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 G 3315 : 2002 5 to 99 100 and over 8.2 +3 mm. However, the width tolerance to mill edge shall fall within ilo mm. O Width tolerances The width tolerance to specified width shall fall within f 3.0 f 1.0 8.3 Length tolerances 8.3.1 Length tolerances for shee
