压力容器用钢材扁平制品 第3部分：可焊接、正火、细晶粒钢

Flat products made from steel for pressure purposes

Weldable, normalized, fine grain steels

English version of DIN EN 10 028 Part 3

DIN EN 10 028 Part 3

Flacherzeugnisse aus Druckbehälterstählen: schweißgeeignete Feinkornbaustähle, normalgeglüht

This standard, together with DIN EN 10 028 Part 1 and DIN EN 10 113 Parts 1 and 2, supersedes DIN 17 102, October 1983 edition.

European Standard EN 10 028-3:1992 has the status of a DIN Standard.

A comma is used as the decimal marker.

National foreword

This standard has been prepared by ECISS/TC 22.

The responsible German body involved in its preparation was the Normenausschuß Eisen und Stahl (Steel and Iron Standards Committee), Technical Committee Stähle für den Druckbehälterbau.

This standard is largely based on the June 1989 draft of DIN 17 102 Part 10 (cf. Amendments).

DIN 50 601 corresponds to EURONORM 103 referred to in clause 2 of the EN.

Continued on pages 2 and 3.
EN comprises 7 pages.

Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). DIN EN 10 028 Part 3 Engl. Price group 8 Sales No. 1108

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Standards referred to

(and not included in Normative references)

DIN 50601 Determination of grain size of ferrite or austenite in ferrous materials by metallographic methods

Previous edition

DIN 17102: 10.83.

Amendments

In comparison with the October 1983 edition of DIN 17102, the following amendments have been made.

a) The specifications are now covered in EN 10028 Parts 1 and 3, and have been editorially revised.

b) The present standard does not apply to weldable fine grain structural steels (cf. DIN 10113 Parts 1 and 2, at present at the stage of draft).

c) Steels with a minimum yield strength of 255, 315, 380, 420 and 500 N/mm² have been dropped, and those with a minimum yield strength of 275 N/mm² (in place of 285 N/mm²), are included for the first time.

d) Some of the requirements for chemical composition and mechanical properties have been amended.

e) The material designations have been changed in accordance with the table below.

International Patent Classification

C 22 C 38/00

C 21 D 1/55

C 01 N 33/20

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Editor's note

This Standard reproduces the official text of the English version of EN 10028-3 as issued by CEN. In its preparation for publication as DIN EN 10028 Part 3 (English version), certain points have been noted which we consider to be in need of correction. These have been marked "-". The suggested amendments are given below and will be forwarded to the responsible CEN Secretariat for its consideration.

In presentation, orthography, punctuation and hyphenation, the aim has been to implement the PNE Rules consistently. Obvious errors (e.g. redundancies and omissions) have been rectified without further reference.

Suggested amendments

1. For the sake of consistency (cf. Scope), the subtitle of the EN should be amended to read: "Weldable, normalized, fine grain steels".
2. In subclause 7.1, item c) does not reflect the German text and should read: "the series with low temperature toughness", and item d), "the special series with low temperature toughness" (since these are the more commonly used technical terms). Subclauses 8.4.2 and 9.5.2 should then be amended accordingly.
3. To avoid confusion, the term "delivery condition" should be replaced by "heat treatment condition" in subclause 8.2, the Note to subclause 8.4.1, and table 4.
4. For ease of reading, the last paragraph of subclause 8.2.3 should be amended to read: "In this case, samples shall be treated to the usual condition prior to testing (cf. table 4)."
5. To facilitate comprehension, the Note to subclause 8.2.3 should be amended to read: "In the case of samples treated as described above, the party responsible for further processing is still to provide proof that the properties of the finished product comply with the relevant requirements."
6. In the Note to subclause 8.2.4, the term "stress relief annealing" should be replaced by "stress-relieving", which is the more common technical term.
7. For the sake of clarity, the title of table 2 should be amended to read: "Amounts by which the chemical composition as determined by product analysis may deviate from the limiting values specified for cast analysis (cf. table 1)".
8. For the purpose of elaboration, footnote "i" to table 3 should be amended to read: "The carbon equivalent, CEV, shall be calculated from the following equation:"
9. By way of correction, the title of subclause 9.3 should read: "Scope of testing".
10. For the sake of clarity, subclause 9.5.2 should be amended to read: "The values of impact energy shall be in compliance with table 6."
11. For the sake of comprehension, footnote "i" to table 4 should be amended to read: "Until the values of yield strength are harmonized among the various national codes of practice, it shall be permitted to determine the 0.2% proof strength, R_p0.2, instead of R_u11. In the case of R_u11 values up to 355 N/mm², the values of R_p0.2 shall be reduced by 10 N/mm² and, in the case of R_u11 values over 355 N/mm², the values of R_p0.2 shall be reduced by 15 N/mm²."

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EN 10 028-3

EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM

December 1992

UDC 629.14.018.29-41:621.642-98

Descriptors: Iron and steel products, metal plate, steel strip, steels, welded constructions, pressure equipment, designation, specifications, heat treatment condition, tests, marking.

English version

Flat products made of steels for pressure purposes

Part 3: Weldable fine grain steels, normalized

This European Standard was approved by CEN on 1992-12-21.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographic references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

CEN

European Committee for Standardization
Comité Européen de Normalisation
Europäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

© 1992. Copyright reserved to all CEN members. Ref. No. EN 10 028-3:1992 E

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Contents

NOTE: The clauses marked contain information relating to agreements which are to be made at the time of ordering. The clauses marked contain information relating to agreements which may be made at the time of ordering.

Foreword

This European Standard was prepared by ECiSS/TC 22 'Steels for pressure purposes: qualities', the Secretariat of which is held by DIN.

Within the framework of the ECiSS (European Committee for Iron and Steel Standardization) programme, ECiSS/TC 22 was allocated the task of revising EURONORM 28-85 'Steel plate, sheet and strip with elevated temperature properties; technical delivery conditions' and (where relevant to pressure vessel construction) EURONORM 113-72 'Weldable fine grain structural steels' and replacing them with a European Standard.

At its meeting in January 1991, ECiSS/TC 22 approved the present document. The following ECiSS members were represented at the meeting: Austria, Belgium, Finland, France, Germany, Italy, Norway, Sweden, United Kingdom.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by June 1993 at the latest.

In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

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