jis g 0321 -...

JIS G 0321 :2010

(JISF)

JAPANESE INDUSTRIAL STANDARD

Translated and Published by

Japanese Standards Association

Product analysis and its tolerance for wrought steel

ICS 77.040.01;77.140.01

Reference number: JIS G 0321 : 2010 (E)

PROTECTED BY COPYRIGHT 7S Copyright Japanese Standards Association Provided by IHS under license with JSA

Not for ResaleNo reproduction or networking permitted without license from IHS

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G 0321 : 2010

Date of Establishment: 1966-09-01

Date of Revision: 2010-10-20

Date of Public Notice in Official Gazette: 2010-10-20

Investigated by: Japanese Industrial Standards Committee

© JSA 2011

Standards Board

Technical Committee on Iron and Steel

JIS G 0321 :2010, First English edition published in 2011-03

Translated and published by: Japanese Standards Association 4-1-24, Akasaka, 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.

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 KAIAT

PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSA


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G 0321 : 2010

Contents

Page

1 Scope················································· ...................................................... ·····················1

2 Normative references ...................................................... ··········································1

3 Terms and definitions ............................................................................................... 1

4 Method of sampling for analysis ...................................................... ·······················2 4.1 Method of sampling for analysis ...................................................... ·······················2 4.2 Number of analytical samples ...................................................... ···························3

5 Analysis method········································································································ 3 5.1 Chemical composition specified in each standard of wrought steel·················· 3 5.2 Chemical composition not specified in each standard of wrought steel··········· 3

6 Tolerances for product analysis ...................................................... ························3

7 Re-sampling and re-analysis····················································································4

(i)



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G 0321 : 2010

Foreword

This 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 of 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 0321: 2005 has been replaced with this Standard.

This JIS document is protected by the Copyright Law.

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.

(ii)



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JAPANESE INDUSTRIAL STANDARD JIS G 0321 : 2010

Product analysis and its tolerance for wrought steel

1 Scope

This Japanese Industrial Standard specifies the product analysis and its tolerance for the killed steel products of rolled or forged carbon steel, alloy steel, stainless steel and heat resisting steel (hereafter referred to as "wrought steel").

In addition, the application of this Standard shall be as stated in the individual product standards.

2 Norma ti ve references

The standards listed in table 1 contain provisions which, through reference in this text, constitute provisions of this Standard. The most recent editions of the standards (including amendments) indicated in the table shall be applied.

3 Terms and definitions

For the purpose of this Standard, the terms and definitions given in JIS G 0417 and JIS G 1201, and the following apply:

3.1 heat analysis

analysis of chemical composition performed by the manufacturer according to a Japanese Industrial Standard or other certain documented procedure, for determining the representative values of the molten steel

This analysis is generally carried out on analytical samples 1) taken during a series of procedures in which the molten steel is poured into a mould from a ladle and then solidified.

Note 1) Where it is not feasible to obtain the analytical sample from the molten steel, such as in vacuum arc remelting method (VAR), electro-slag remelting method (ESR), or other method, the analysis is carried out on analytical samples taken from steel ingot, steel slab, or steel material, and the results are applied to the heat analysis.

3.2 product analysis

analysis carried out on analytical samples taken from wrought steel

NOTE: The analytical values obtained by a product analysis can differ from those obtained by a heat analysis due to segregation, and can also show variation between different samples.

3.3 tolerances for product analysis

permissible deviation of the individual value of product analysis from the upper limit value and/or the lower limit value of the heat analysis specified in a standard of wrought steels



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2 G 0321: 2010

NOTE: For example, when the upper limit value of heat analysis of carbon (C)

specified in a standard of wrought steel is 0.25 %, and the tolerance for product analysis on the plus side designated in a standard of wrought steel in accordance with this Standard is +0.03 %, the permissible upper limit value of product analysis is 0.28 %.

3.4 original analysis method

analysis method not specified in JIS, which falls under either of the following:

a) An appropriate steel analysis method developed by steel manufacturers, steel users, laboratories and so on, which is made public in the form of library, research paper and so on, and whose preciseness is verified by the certifying standard material and so on.

b) An analytical method prepared by altering a part 2) of the procedures of the relevant JIS standard method so as to have a broader range of application, and which satisfies the critical limit from a certified value, repeatability limit and within laboratory reproducibility limit specified in 7.2 or 7.3 of JIS G 1201.

Note 2) Mass of sample weighed, aliquot ratio, the amount of extracted solvent, or other matters.

3.5 sample product

product sampled from the test unit for inspection and/or test

4 Method of sampling for analysis

4.1 Method of sampling for analysis

The method of sampling for analysis shall be as follows:

a) The analytical sample for product analysis shall be taken from a position representing the average chemical composition of the cross-section of the original steel billet.

If the method of sampling is not specified in the product standard or in the requirements given in the order of the product, the analytical sample may be directly taken from the specimens or test pieces for the mechanical test, or a sample product.

b) The analytical sample shall be free from scales, rust, paint, plating metal, decarburized layer and impurities. Further, the analytical sample shall not be used if oxidized, rusted or soiled during storage.

When the sample is taken from chips produced in machining, the sampling procedure shall be in accordance with 4.4 of JIS G 0417.

c) When the analytical sample is to be taken directly from a sample product, the procedure in clause 10 of JIS G 0417 shall be applied. However, if this is impracticable, analytical samples shall be taken by a suitable method referring to 4.1 a)

and 4.1 b). In this case, the sampling method shall be subjected to the agreement between the purchaser and the manufacturer.



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3 G 0321: 2010

d) When the analytical samples for the emission spectrometric analysis and fluorescent X-ray analysis of the product analysis are to be directly taken from a sample product, the samples which comply with JIS G 1253 and JIS G 1256 shall be taken in accordance with clause 10 of JIS G 0417. However, when the sample for instrumental analysis can not be taken in accordance with 4.1 a), the analysis shall not be carried out.

4.2 Number of analytical samples

When the number of analytical samples is not specified in a standard of wrought steel, one sample shall be taken from a unit of products manufactured from the same heat.

5 Analysis method

5.1 Chemical composition specified in each standard of wrought steel

Analysis method shall be as follows. In the case of doubt arising as to the analytical value obtained by the instrumental analysis, a re-analysis may be performed by a chemical analysis method.

JIS G 1211, JIS G 1212, JIS G 1213, JIS G 1214, JIS G 1215-1, JIS G 1215-2, JIS G 1215-3, JIS G 1215-4, JIS G 1216, JIS G 1217, JIS G 1218, JIS G 1219, JIS G 1220, JIS G 1221, JIS G 1222, JIS G 1223, JIS G 1224, JIS G 1225, JIS G 1226, JIS G 1227, JIS G 1228, JIS G 1229, JIS G 1232, JIS G 1233, JIS G 1234, JIS G 1235, JIS G 1236, JIS G 1237, JIS G 1253, JIS G 1256, JIS G 1257, JIS G 1258-1, JIS G 1258-2, JIS G 1258-3, JIS G 1258-4, JIS G 1258-5, JIS G 1258-6, JIS G 1258-7, JIS G 1281

5.2 Chemical composition not specified in each standard of wrought steel

Apply methods in 5.1, and if the component or the content rate under question can not be determined by methods in 5.1, an original analysis method agreed between the manufacturer and the purchaser shall be applied.

6 Tolerances for product analysis

The tolerances for product analysis shall be as follows:

a) The tolerances for product analysis are given in table 2 to table 5.

As a rule, table 2 and table 3 shall be applicable for carbon steel, table 4 for alloy steel (excluding stainless steel and heat resisting steel) and table 5 for stainless steel and heat resisting steel. The application of tables shall be as specified in the respective standards.

b) The values obtained from the product analysis shall not exceed the prescribed maximum value of chemical composition plus the upper limit value given in tables 2 to 5 or be lower than the prescribed minimum value minus the lower limit value given in the said tables. However, the tolerance shall be obtained from the table of tolerance based on the specified maximum value of chemical composition. If only the minimum value is specified, the tolerance shall be obtained from the table of tolerance based on the minimum value of the chemical composition.



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4 G 0321: 2010

c) For the tolerance of one kind of wrought steel, all or a part of the tolerances in one table shall be applied, and tolerances in 2 or more tables shall not be used in mixture.

7 Re-sampling and re-analysis

When the result of analysis does not conform to this Standard, a re-sampling and re-analysis may be performed upon agreement between the purchaser and the manufacturer.

Table 1 Normative references

JIS G 0417 Steel and iron - Sampling and preparation of samples for the determination of chemical composition

JIS G 1201 Iron and steel-General rules for analytical methods

JIS G 1211 Iron and steel-Methods for determination of carbon content

JIS G 1212 Iron and steel-Methods for determination of silicon content

JIS G 1213 Iron and steel-Methods for determination of manganese content

JIS G 1214 Iron and steel-Methods for determination of phosphorus content

JIS G 1215-1 Iron and steel-Determination of sulfur content-Part 1: Gravimetric method after separation of iron

JIS G 1215-2 Iron and steel-Determination of sulfur content-Part 2: Gravimetric method after chromatographic separation

JIS G 1215-3 Iron and steel-Determination of sulfur content-Part 3: Methylene blue spectrophotometric method after separation of hydrosulfide

JIS G 1215-4 Iron and steel-Determination of sulfur content-Part 4: Infrared absorption method after combustion in an induction furnace

JIS G 1216 Iron and steel-Methods for determination of nickel content

JIS G 1217 Iron and steel-Methods for determination of chromium content

JIS G 1218 Iron and steel-Methods for determination of molybdenum content

JIS G 1219 Iron and steel-Methods for determination of copper content

JIS G 1220 Iron and steel-Methods for determination of tungsten content

JIS G 1221 Iron and steel-Methods for determination of vanadium content

JIS G 1222 Iron and steel-Methods for determination of cobalt content

JIS G 1223 Iron and steel-Methods for determination of titanium content

JIS G 1224 Iron and steel-Methods for determination of aluminium content

JIS G 1225 Iron and steel-Methods for determination of arsenic content

JIS G 1226 Iron and steel-Method for determination of tin content

JIS G 1227 Iron and steel-Methods for determination of boron content

JIS G 1228 Iron and steel-Methods for determination of nitrogen content

JIS G 1229 Steel-Methods for determination of lead content

JIS G 1232 Methods for determination of zirconium in steel

JIS G 1233 Steel-Method for determination of selenium content

JIS G 1234 Methods for determination of tellurium in steel

JIS G 1235 Methods for determination of antimony in iron and steel

JIS G 1236 Method for determination of tantalum in steel

JIS G 1237 Iron and steel-Methods for determination of niobium content

JIS G 1253 Iron and steel-Method for spark discharge atomic emission spectrometric analysis



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Table 1

JIS G 1256 Iron and steel-Method for X-ray fluorescence spectrometric analysis

JIS G 1257 Iron and steel-Methods for atomic absorption spectrometric analysis

JIS G 1258-1 Iron and steel-ICP atomic emission spectrometric method-Part 1: Determination of silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, vanadium, cobalt, titanium and aluminium contents-Dissolution in acids and fusion with potassium disulfate

JIS G 1258-2 Iron and steel-ICP atomic emission spectrometric method-Part 2: Determination of manganese, nickel, chromium, molybdenum, copper, tungsten, vanadium, cobalt, titanium and niobium contents-Dissolution in phosphoric and sulfuric acids

JIS G 1258-3 Iron and steel-ICP atomic emission spectrometric method-Part 3: Determination of silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, vanadium, cobalt, titanium and aluminium contents-Dissolution in acids and fusion with sodium carbonate

(concl uded)

5 G 0321: 2010

JIS G 1258-4 Iron and steel-ICP atomic emission spectrometric method-Part 4: Determination of niobium content-Dissolution in phosphoric and sulfuric acids or dissolution in acids and fusion with potassium disulfate

JIS G 1258-5 Iron and steel-ICP atomic emission spectrometric method-Part 5: Determination of boron content-Dissolution in phosphoric and sulfuric acids

JIS G 1258-6 Iron and steel-ICP atomic emission spectrometric method-Part 6: Determination of boron content-Dissolution in acids and fusion with sodium carbonate

JIS G 1258-7 Iron and steel-ICP atomic emission spectrometric method-Part 7: Determination of boron content-Distillation as trimethyl borate

JIS G 1281 Methods for chemical analysis of nickel-chromium-iron alloys

Table 2 Tolerances for product analysis of carbon steel (1)

Unit: %

Elements Maximum value of prescribed Tolerance chemical composition

Lower limit Upper limit

C 0.15 or under 0.02 0.03

Over 0.15 up to and incl. 0040 0.03 0.04

Over 0040 up to and incl. 0.80 0.03 0.05

Over 0.80 0.03 0.06

Si 0.30 or under 0.02 0.03

Over 0.30 up to and incl. 0.60 0.05 0.05

Mn 0.60 or under 0.03 0.03



P 0.060 or under - 0.010

S 0.060 or under - 0.010

Cu When the minimum value is 0.02 -

specified.



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6 G 0321: 2010

Table 3 Tolerances for product analysis of carbon steel (2)

Unit: %

Elements Maximum value of prescribed Tolerance on sectional area given below chemical composition

65000 mm2 Over Over Over or under 65000 mm2 130000 mm2 260000 mm2

up to and incl. up to and incl. up to and incl. 130000 mm2 260000 mm2 520000 mm2

Lower Upper Lower Upper Lower Upper Lower Upper limit limit limit limit limit limit limit limit

C 0.25 or under 0.02 0.02 0.03 0.03 0.04 0.04 0.05 0.05

Over 0.25 up to and incl. 0.55 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06

Over 0.55 0.04 0.04 0.05 0.05 0.06 0.06 0.07 0.07

Si 0.35 or under 0.02 0.02 0.02 0.02 0.03 0.03 0.04 0.04

Over 0.35 up to and incl. 0.60 0.05 0.05 - - - - - -

Mn 0.90 or under 0.03 0.03 0.04 0.04 0.06 0.06 0.07 0.07


P 0.050 or under - 0.008 - 0.010 - 0.010 - 0.015

S 0.060 or under - 0.008 - 0.010 - 0.010 - 0.015

Cu When the minimum value is 0.02 - 0.03 - - - - -

specified.



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Elements

C

Si

Mn

P

S

Cu

Ni

Cr

Mo

V

W

Al

7 G 0321: 2010

Table 4 Tolerances for product analysis of alloy steel

Unit: %

Maximum value of prescribed Tolerance on sectional area given below chemical composition

65000 mm2 Over Over Over or under 65000 mm2 130000 mm2 260000 mm2

up to and incl. up to and incl. up to and incl. 130000 mm2 260000 mm2 520000 mm2

Lower Upper Lower Upper Lower Upper Lower Upper limit limit limit limit limit limit limit limit

0.30 or under 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.04


Over 0.75 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06

0.35 or under 0.02 0.02 0.02 0.02 0.03 0.03 0.04 0.04


0.90 or under 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06


0.050 or under - 0.005 - 0.010 - 0.010 - 0.010

0.060 or under - 0.005 - 0.010 - 0.010 - 0.010

1.00 or under 0.03 0.03 - - - - - -

Over 1.00 up to and incl. 2.00 0.05 0.05 - - - - - -

1.00 or under 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03




0.90 or under 0.03 0.03 0.04 0.04 0.04 0.04 0.05 0.05



0.20 or under 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.03

Over 0.20 up to and incl. 0040 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.04

Over 0040 up to and incl. 1.15 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06

0.10 or under 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01



When the minimum value is 0.01 - 0.01 - 0.01 - 0.01 -

specified.

1.00 or under 0.04 0.04 0.05 0.05 0.05 0.05 0.06 0.06


1.50 or under 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10



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8. G 0321: 2010

Table 5 Tolerances for product analysis of stainless steel and heat resisting steel

Unit: %

Elements Maximum value of prescribed Tolerance chemical composition

Lower limit Upper limit

C 0.030 or under - 0.005




Si 1.00 or under - 0.05


Mn 1.00 or under - 0.03


P 0.040 or under - 0.005

S 0.040 or under - 0.005

Ni 1.00 or under - 0.03







Cr Over 4.00 up to and incl. 10.00 0.10 0.10




Mo Over 0.20 up to and incl. 0.60 0.03 0.03



Cu 0.50 or under - 0.03



W Over 1.75 up to and incl. 5.00 0.10 0.10

Ti When the minimum value is 0.05 -

specified.

Nb+Ta When the minimum value is 0.05 -specified.

Al 0.10 or over up to and incl. 0.30 0.05 0.05

N Over 0.19 up to and incl. 0.25 0.02 0.02



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Errata for JIS (English edition) are printed in Standardization and Quality Control, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly Information.

Errata will be provided upon request, please contact: Standards Publishing Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462



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