EN 10084

ICS 77.140.10

Descriptors: Steel, case hardening steel.

Einsatzst?hle – Technische Lieferbedingungen European Standard EN 10084:1998 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 23.

The responsible German body involved in the preparation of this standard was the Normenausschu? Eisen

und Stahl (Steel and Iron Standards Committee).

The DIN Standards corresponding to the EURONORMs and CEN document referred to in clause 2 of the EN

are as follows:

CR 10260

DIN V 17006-100EURONORM 23

DIN 50191EURONORM 103DIN 50601

Amendments

DIN 17210, September 1986 edition, has been superseded by the specifications of EN 10084.

Previous editions

DIN 1661:1924-09, 1929-06; DIN 1662:1928-07, 1930-06, 1932-05; DIN 1663:1936-05, 1939x-12, 1940-08;

DIN 1664:1941-05; DIN 1666:1943-11; DIN 17210:1951-12, 1959-01, 1969-12, 1986-09.

National Annex NA

Standards referred to

(and not included in Normative references )

DIN V 17006-100Designation systems for steel – Additional symbols for steel names

DIN 50191End quench hardenability testing of steel (Jominy test)

DIN 50601Metallographic examination – Determination of the ferritic or austenitic grain size of steel

and ferrous materials

Ref.No.DIN EN 10084:1998-06English price group 15Sales No.1115

06.98

DEUTSCHE NORM June 1998

EN 10084{EN comprises 33 pages.

?No part of this standard may be reproduced without the prior permission of

DIN Deutsches Institut für Normung e.V., Berlin.

Beuth Verlag GmbH , D-10772Berlin, has the exclusive right of sale for German Standards (DIN-Normen).Case hardening steels

Technical delivery conditions

English version of DIN EN 10084

Supersedes DIN 17210,September 1986 edition.

English version

ICS 77.140.10

Descriptors: Steel, case hardening steel.

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

European Committee for Standardization

Comité Européen de Normalisation

Europ?isches Komitee für Normung

Case hardening steel

Technical delivery conditions

?1998.CEN –All rights of exploitation in any form and by any means

reserved worldwide for CEN national members.Ref. No. EN 10084:1998E

Aciers pour cémentation – Conditions

techniques de livraison Einsatzst?hle – Technische Liefer-bedingungen

This European Standard was approved by CEN on 1998-03-xxx.

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 bibliographical references concerning such national stand-

ards may be obtained on application to the Central Secretariat or to any

CEN member.

The European Standards exist 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, the Czech

Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,

Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,

and the United Kingdom.

èé?

EN 10084

March 1998

Page2

EN10084:1998

Contents

Page Page

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1Scope . . . . . . . . . . . . . . . . . . . . . . . . 3 2Normative references . . . . . . . . . . 4 3Definitions . . . . . . . . . . . . . . . . . . . . 5 4Classification and designation . . . 5 4.1Classification . . . . . . . . . . . . . . . . . . 5 4.2Designation . . . . . . . . . . . . . . . . . . . . 5 5Information to be supplied

by the purchaser . . . . . . . . . . . . . . . 6 5.1Mandatory information . . . . . . . . . . . 6 5.2Options . . . . . . . . . . . . . . . . . . . . . . . 7 6Manufacturing process . . . . . . . . . 7 6.1Melting process . . . . . . . . . . . . . . . . 7 6.2Deoxidation . . . . . . . . . . . . . . . . . . . . 7 6.3Manufacture of the product . . . . . . 7 6.4Heat treatment condition and

surface finish at the time of

delivery . . . . . . . . . . . . . . . . . . . . . . . 8 6.5Cast separation . . . . . . . . . . . . . . . . 8 7Requirements . . . . . . . . . . . . . . . . . 8 7.1Chemical composition, hardness

and hardenability . . . . . . . . . . . . . . . 8 7.2Technological properties . . . . . . . . . 8 7.3Structure . . . . . . . . . . . . . . . . . . . . . . 9 7.4Internal soundness . . . . . . . . . . . . . . 9 7.5Surface quality . . . . . . . . . . . . . . . . . 9 7.6Dimensions, tolerances on

dimensions and shape . . . . . . . . . . .108Inspection and testing . . . . . . . . . .10 8.1Types and contents of inspection

documents . . . . . . . . . . . . . . . . . . . .10 8.2Specific inspection and testing . . . .11

9Marking . . . . . . . . . . . . . . . . . . . . . .11

Annex A(normative)Supplementary

or special requirements . . . . . .28

Annex B(informative)Bibliography . . .29

Annex C(informative)Dimensional

standards applicable to

products complying with this

European Standard . . . . . . . . . .30

Annex D(normative)Determining

the non-metallic inclusions

content . . . . . . . . . . . . . . . . . . . .31

Annex E(informative)Comparison

of steel grades specified in

this European Standard and

ISO683-11:1987 and other

steel grades previously

standardizes nationally . . . . . . .32

Annex F(informative)Classification

of steel grades according to

minimum tensile strength as

a function of diameter after

quenching and tempering at

200°C . . . . . . . . . . . . . . . . . . . .33

Foreword

This European Standard has been prepared by ECISS/TC23 “Steel for heat treatment, alloy steels and free-cutting steels – Qualities”, the Secretariat of which is held by DIN.

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 July1998 at the latest.

In accordance with the CEN/CENELEC Internal Regulations, the national standards organiza-tions of the following countries are bound to implement this European Standard:

Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.

The United Kingdom will issue a non-conflicting national addition which describes a steel used in the United Kingdom but is not included in this European Standard.

Page 3 EN10084:1998

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EN10084:1998

1)It may be agreed at the time of ordering, until this EURONORM has been adopted as a

European Standard, that either this EURONORM or a corresponding national standard should be applied.

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EN10084:1998

1)See page 4

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Page 7 EN10084:1998

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Page 11 EN10084:1998

Page

12EN 10084

:

1998

Page 13

EN10084:1998 Table2:Surface condition at delivery

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EN10084:1998

Table3:Steel grades and chemical composition (cast analysis)

1)Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser,

other than for the purpose of finishing the heat. All reasonable precautions should be taken to prevent the addition from scrap or other material used in manufacture, of such elements which affect the hardenability, mechanical properties and applicability.

2)Where requirements are made on hardenability (see tables5 and 6), slight deviations from the limits for the cast analysis

are permitted, except for phosphorus and sulfur; these deviations shall, however, not exceed, in the case of carbon, t0,01% and in all other cases, the values specified in table4.

3)Steels with improved machinability as a result of the addition of lead or higher sulfur contents, depending on the

manufacturing process up to around 0,100% S (including controlled sulfide and oxide formation, e.g. calcium treat-ment), may be supplied on request. In this case, the upper limit of the manganese content may be increased by 0,15%.

4)Boron in this case is not added to increase hardenability but to improve the toughness of the case-hardened zone.

Page 15

EN10084:1998 Table4:Permissible deviations between the product analysis and the limiting values

given in table3 for the cast analysis

1)t means that in one cast the deviation may occur over the upper value or under the lower value of the specified range

in table3, but not both at the same time.

2)For steels with a specified sulfur range (0,020% to 0,040% according to cast analysis), the permissible deviation is

t0,005%.

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EN10084:1998

Table5:Hardness limits for steel types with specified (normal) hardenability

(H-grades; see 7.1)

Page 17

EN10084:1998 Table6:Hardness limits for steel types with restricted hardenability scatterbands

(HH- and HL-grades)

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EN10084:1998

Table6(concluded)