BS en 10263.3-2001TDC for Case Hardening Steel

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BRITISH STANDARD BS EN10263-3:2001IncorporatingCorrigendum No. 1

Steel rod, bars and wirefor cold heading and

cold extrusion —

Part 3: Technical delivery conditionsfor case hardening steels

The European Standard EN 10263-3:2001 has the status of aBritish Standard

ICS 77.140.60; 77.140.65

NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW

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BS EN 10263-3:2001

This British Standard, havingbeen prepared under thedirection of the EngineeringSector Committee, waspublished under the authority

of the Standards Committeeand comes into effect on15 August 2001

© BSI 13 September 2001

ISBN 0 580 37622 2

National foreword

This British Standard is the official English language version ofEN 10263-3:2001. Together with BS EN 10263-1:2001, BS EN 10263-2:2001and BS EN 10263-4:2001 it supersedes BS 3111-1:1987, which is withdrawn.

The UK participation in its preparation was entrusted to Technical CommitteeISE/71, Steel rods for wire drawing, which has the responsibility to:

A list of organizations represented on this committee can be obtained onrequest to its secretary.

Cross-references

The British Standards which implement international or Europeanpublications referred to in this document may be found in the BSI StandardsCatalogue under the section entitled “International Standards CorrespondenceIndex”, or by using the “Find” facility of the BSI Standards ElectronicCatalogue.

A British Standard does not purport to include all the necessary provisions ofa contract. Users of British Standards are responsible for their correctapplication.

Compliance with a British Standard does not of itself confer immunityfrom legal obligations.

— aid enquirers to understand the text;

— present to the responsible European committee any enquiries on theinterpretation, or proposals for change, and keep the UK interestsinformed;

— monitor related international and European developments andpromulgate them in the UK.

Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page,pages 2 to15 and a back cover.

The BSI copyright date displayed in this document indicates when thedocument was last issued.

Amendments issued since publication

Amd. No. Date Comments

13451Corrigendum No. 1

13 September2001

Addition of supersession detailspy

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EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 10263-3

June 2001

ICS 77.140.60; 77.140.65

English version

Steel rod, bars and wire for cold heading and cold extrusion —Part 3: Technical delivery conditions for case hardening steels

Barres, fil machine et fil en acier pour transformation à froidet extrusion à froid — Partie 3: Conditions techniques de

livraison des aciers de cémentation

Walzdraht, Stäbe und Draht aus Kaltstauch- undKaltfließpreßstählen — Teil 3: Technische

Lieferbedingungen für Einsatzstähle

This European Standard was approved by CEN on 19 April 2001.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.

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

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

EUROPEAN COMMITTEE FOR STANDARDIZATION

COM IT É E UROPÉ E N DE NORM AL ISAT ION

E UROPÄISCHE S KOM IT E E FÜR NORM UNG

Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2001 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 10263-3:2001 E

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Page 2EN 10263-3:2001


ContentsPage

Foreword........................................................................................................................................................... 3

1 Scope ......................................................................................................................................................... 4

2 Normative References.............................................................................................................................. 4

3 Terms and definitions .............................................................................................................................. 4

4 Classification and Designation ............................................................................................................... 44.1 Classification........................................................................................................................................ 44.2 Designation.......................................................................................................................................... 4

5 Production process .................................................................................................................................. 45.1 Steelmaking process ........................................................................................................................... 45.2 Deoxidation.......................................................................................................................................... 4

6 Requirements ............................................................................................................................................ 56.1 Delivery conditions .............................................................................................................................. 56.2 Chemical composition ......................................................................................................................... 56.3 Mechanical properties ......................................................................................................................... 56.4 Hardenability........................................................................................................................................ 56.5 Surface quality..................................................................................................................................... 56.6 Supplementary or special requirements.............................................................................................. 5

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Page 3EN 10263-3:2001


Foreword

This European Standard has been prepared by Technical Committee ECISS/TC 15, Wire-rod — Qualities,dimensions, tolerances and specific tests, the Secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by December 2001, and conflicting national standards shall bewithdrawn at the latest by December 2001.

This European Standard EN 10263 is subdivided as follows:

— Part 1: General technical delivery conditions;

— Part 2: Technical delivery conditions for steels not intended for heat treatment after cold working;

— Part 3: Technical delivery conditions for case hardening steels;

— Part 4: Technical delivery conditions for steels for quenching and tempering;

— Part 5: Technical delivery conditions for stainless steels.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.

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Page 4EN 10263-3:2001


1 Scope

1.1 This part of EN 10263 is applicable to round rod, round bars and wire with a diameter up to andincluding 100 mm, of non-alloy and alloy steel, intended for cold heading and cold extrusion and subsequentcase hardening treatment.

1.2 This part of EN 10263 is complemented by EN 10263-1.

2 Normative References

This European Standard incorporates by date or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For date references, subsequent amendments to or revisions of, any of these publications apply tothis European Standard only when incorporated in it by amendment or revision. For undated references thelatest edition of the publication referred to applies (including amendments).

EN 10020, Definitions and classification of grades of steel.

EN 10263-1, Steel rod, bars and wire for cold heading and cold extrusion— Part 1: General technical delivery conditions.

3 Terms and definitions

For the purposes of this standard the definitions in EN 10263-1:2001 and the following apply.

3.1case hardening steelsteel with a relatively low carbon content, which is intended for carburizing or carbonitriding and subsequent

hardening. Such steels, after treatment, are characterized by a high hardness surface layer and a tough coreNOTE Other processes for case hardening include nitriding and nitrocarburizing

4 Classification and Designation

4.1 Classification

All steels covered by this part of EN 10263-1:2001 are special steels according to EN 10020.

Steel grades from C10E2C to C20E2C as quoted in Table 2 are non-alloy steels and all others are alloysteels according to EN 10020.

4.2 Designation

See EN 10263-1:2001.

5 Production process

5.1 Steelmaking process

See EN 10263-1:2001.

5.2 Deoxidation

All steels quoted in Table 2 shall be killed.

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Page 5EN 10263-3:2001


6 Requirements

6.1 Delivery conditions

The delivery conditions in which the products covered by this part of EN 10263 are normally supplied, theproduct forms and the applicable requirements are given in Table 1.

6.2 Chemical composition

6.2.1 Heat analysis

The chemical composition shall be in accordance with the values specified in Table 2 for the heat analysis.

6.2.2 Product analysis

In cases where a product analysis is requested, the admissible deviations from the values specified for theheat analysis are indicated in Table 3.

6.3 Mechanical properties

The mechanical properties of the products, to be determined by the tensile test or hardness test, shall be in

accordance with the prescriptions given in Table 1, for that which concerns the delivery condition, and inTables 4, 5 and 6.

6.4 Hardenability

6.4.1 In the case of products ordered with standard requirements regarding hardenability, that is, whenthe steel names or numbers as quoted in Table 2 are supplemented by the symbols “+H”, the hardnessvalues obtained in the end quench test (Jominy test) (see Table 1 of EN 10263-1:2001) shall be incompliance with the values given in Table 7.

6.4.2 In the case of products ordered with restricted requirements regarding the scatter bands of thehardness values obtained by the Jominy test, that is when the steel name or number as quoted in Table 2 issupplemented by the symbol “+HH” or “+HL”, the above hardness values shall be in compliance with the

values given in Table 8.

NOTE 1 The symbol “+HH” denotes that the upper limit of the scatter band coincides with the upper limit for thecorresponding steel “+H”.

NOTE 2 The symbol “+HL” denotes that the lower limit of the scatter band coincides with the lower limit for thecorresponding steel “+H”.

NOTE 3 See EN 10263-1:2001, 7.7.4.

6.4.3 The austenitizing temperatures for the Jominy test are given in Tables 7 and 8.

6.5 Surface quality

For any particular surface requirement to be agreed at the time of ordering see EN 10263-1:2001, 7.10.

6.6 Supplementary or special requirements

Other requirements that can be agreed at the time of enquiry and order are described in annex B of EN 10263-1:2001.

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P a g e 6

E N1 0 2 6 3 - 3 : 2 0 0 1

©B S I 1 3 S e

p t em b er 2 0 0 1

T a b l e1 —

D el i v er y c on d i t i on s , pr o d u c t f or m s an d a p pl i c a b l er e q ui r em en t s

P r o d u c t sf or m a

A p pl i c a b l er e q ui r em en t si n c a s e swh er e t h

e s t e el c on c er n e d h a s b e en or d

er e d wi t h

r ef er en c e t o t h e s t e el

n am e si n d i c a t e d i n:

D el i v

er y

c on d i t i on

S ym b ol s

R o d

B ar

Wi r e

T a b l e2 an

d 4 or 5 or 6

T a b l e7 or 8

T a b l e

2 ,4 , 5 , 6 ,7

or 8

a

s h o t r ol l e d

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X

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c ol d d r awn

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+

s ph er oi d i z e d

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Un t r e a t e d

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s ph er oi d i z e d

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X

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a

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X

+

p e el e d

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X

S ph er oi d i z e d

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X

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s t r e a t e d

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X

C h emi c al

c om p o s i t i on

a s s p e c i f i e d

i nT a b l e s 2

an d 3

M e c h ani c al

pr o p er t i e s


i nT a b l e4 or

5 or 6

C h emi c al

c om p o s i t i on


i nT a b l e s 2

an d 3

M e

c h ani c al

pr o p er t i e s

a s

s p e c i f i e d

i nT a b l e4 or

5 o

r 6

V al u e s f or

h ar d en a b i l i t y

a c c or d i n g t o

T a b l e s 7 or 8

S u p pl em en t ar y

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—

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b

i f a gr e e d a t t h e t i m e of t h e or d er i n g

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Page 8EN 10263-3:2001


Table 3 — Permissible deviations between product analysis and the limiting values specified inTable 2 for the heat analysis

Elements Limiting values of the cast(heat) analysis

% by mass

Permissible deviation for the product analysis

% by massa

C 0,24 0,02Si 0,30 0,03

1,00 0,04Mn

1,00 1,40 0,06P 0,025 + 0,005S 0,040 + 0,005b

Cr 1,70 0,05 0,30 0,03

Mo 0,30 0,50 0,04 1,00 0,03

Ni 1,00 1,70 0,05

B 0,005 0 0,000 3

Cu 0,25 + 0,03

a ± means that in one heat the deviation of the product analysis for a given element mayoccur over the upper value or under the lower value of the specified range in Table 2,but not both at the same time.

b for steels with a specified sulphur range (0,020 to 0,040 % according to cast analysis)the permissible deviation is ±0,005 %.

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D el i v er y C on d i t i on

S t e el gr a d e

Di am e t er

+ U or + P E

+ A C or + A C + P E

+ U+ C

+ U+ C + A C

+ U+ C + A C + L C

+ A C + C

M e ch ani c al pr o p er t i e s

S t e el

n am e

S t e el

n um b er

a b ov e

mm

u p t o

mm

R m

m ax .

MP a

Z ami n.

%

Rm

m ax .

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Z mi n.

%

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m ax .

M

P a

Z mi n.

%

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%

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Z mi n.

%

R m

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%

C 1 0 E 2 C

1 .1 1 2 2

2 5 1 0

4 0

5 1 0

4 0

1 0 0

—4 5 0

4 5 0

4 5 0

— 5 8

5 8

5 8

—4 0 0

4 0 0

4 0 0

— 6 5

6 5

6 5

— 5 4 0

5 3 0

—

— 5 6

5 6

—

3 9 0

3 8 0

3 8 0

—

6 7

6 7

6 7

—

4 3 0

4 2 0

4 2 0

—

6 5

6 5

6 5

—

—4 9 0

4 8 0

—

— 6 2

6 2

—

C 1 5 E 2 C

1 .1 1 3 2

2 5 1 0

4 0

5 1 0

4 0

1 0 0

—4 8 0

4 8 0

4 8 0

— 5 8

5 8

5 8

—4 3 0

4 3 0

4 3 0

— 6 5

6 5

6 5

— 5 7 0

5 6 0

—

— 5 6

5 6

—

4 2 0

4 1 0

4 1 0

—

6 7

6 7

6 7

—

4 6 0

4 5 0

4 5 0

—

6 5

6 5

6 5

—

— 5 2 0

5 1 0

—

— 6 2

6 2

—

C 1 7 E 2 C

1 .1 1 4 7

2 5 1 0

4 0

5 1 0

4 0

1 0 0

— 5 3 0

5 3 0

5 3 0

— 5 8

5 8

5 7

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6 5

6 5

— 6 3 0

6 2 0

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— 5 6

5 6

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4 4 0

4 3 0

4 3 0

—

6 7

6 7

6 7

—

4 8 0

4 7 0

4 7 0

—

6 5

6 5

6 5

—

— 5 5 0

5 4 0

—

— 6 2

6 2

—

C 2 0 E 2 C

1 .1 1 5 2

2 5 1 0

4 0

5 1 0

4 0

1 0 0

— 5 3 0

5 3 0

5 3 0

— 5 8

5 8

5 8

—4 7 0

4 7 0

4 7 0

— 6 5

6 5

6 5

— 6 4 0

6 3 0

—

— 5 6

5 6

—

4 6 0

4 5 0

4 5 0

—

6 7

6 7

6 7

—

5 0 0

4 9 0

4 9 0

—

6 5

6 5

6 5

—

— 5 8 0

5 7 0

—

— 6 2

6 2

—

a

T h ev al u e s ar e gi v en onl y f or i nf or m a t i on

1 MP a=1 N / mm2

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M e ch ani c al pr o p er t i e sf or B OR ON al l o y e d s t e el gr a d e s

D el i v er y C on d i t i on

S t e el gr a d e

Di am e t er

+ U

+ A C or + A C + P E

+ U+ C

+ U+ C + A C

+ U+ C + A C + L C

+ A C

+ C


S t e el

n am e

S t e el

n um

b er

a b ov e

mm

u p t o

mm

R m

m ax .

MP a

Z a

mi n.

%

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m ax .

MP a

Z mi n.

%

R m

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Z mi n.

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R m

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MP a

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R m

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MP a

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%

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1 5 B 2

1 . 5 5 0

1

2 5 1 0

5 1 0

4 0

— 5 0 0

5 0 0

— 5 8 5 8

—4 5 0

4 5 0

— 6 5

6 5

— 5 9 0

5 8 0

— 5 6

5 6

4 4 0

4 3 0

4 3 0

6 7

6 7

6 7

4 8 0

4 7 0

4 7 0

6 5

6 5

6 5

— 5 4 0

5 3 0

— 6 2 6 2

1 8 B 2

1 . 5 5 0

3

2 5 1 0

5 1 0

4 0

— 5 2 0

5 2 0

— 5 8 5 8

—4 6 0

4 6 0

— 6 4

6 4

— 6 1 0

6 0 0

— 5 6

5 6

4 5 0

4 4 0

4 4 0

6 7

6 7

6 7

4 9 0

4 8 0

4 8 0

6 5

6 5

6 5

— 5 5 0

5 4 0

— 6 2 6 2

1 8 MnB 4

1 . 5 5 2

1

2 5 1 0

5 1 0

4 0

— 5 8 0

5 8 0

— 5 5 5 5

— 5 0 0

5 0 0

— 6 4

6 4

— 6 8 0

6 7 0

— 5 3

5 3

5 0 0

4 8 0

4 8 0

6 4

6 4

6 4

5 4 0

5 2 0

5 2 0

6 2

6 2

6 2

— 6 0 0

5 9 0

— 5 9 5 9

2 2 MnB 4

1 . 5 5 2

2

2 5 1 0

5 1 0

4 0

— 6 0 0

6 0 0

— 5 5 5 5

— 5 2 0

5 2 0

— 6 2

6 2

—7 2 0

7 1 0

— 5 3

5 3

5 2 0

5 0 0

5 0 0

6 4

6 4

6 4

5 6 0

5 4 0

5 4 0

6 2

6 2

6 2

— 6 3 0

6 2 0

— 5 9 5 9

a

T h ev al u e s ar e gi v en onl y f or i nf or m a t i on

1 MP a=1 N / mm2

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M e ch ani c al pr o p er t i e

sf or AL L OY s t e el gr a d e s

D el i v er y c on d i t i on

S t e

el gr a d e

Di am e t er

+ A C

+ F P

+ U+ C + A C

+ U

+ C + A C + L C

+ A C + C


HB

S t e el n am

e

S t e el

n um b er

a b ov e

mm

u p t o

mm

R m

m ax .

MP a

Z mi n.

%

mi n.

m

ax .

R m

m ax .

MP a

Z mi n.

%

R m

m ax .

MP a

Z mi n.

%

R m

m ax .

MP a

Z mi n

.

%

2

5

—

—

—

—

5 2 0

6 2

5 6 0

6 0

—

—

5

1 0

5 2 0

6 0

1 4 0

1 8 7

5 0 0

6 2

5 4 0

6 0

6 3 0

5 7

1 7 C r 3

1 7 C r S 3

1 .7 0 1 6

1 .7 0 1 4

1 0

4 0

5 2 0

6 0

1 4 0

1 8 7

5 0 0

6 2

5 4 0

6 0

6 2 0

5 7

1 6 Mn C r 5

1 .7 1 3 1

2

5

—

—

—

—

5 5 0

6 4

5 9 0

6 2

—

—

1 6 Mn C r S 5

1 .7 1 3 9

5

1 0

5 5 0

6 2

1 4 0

1 8 7

5 3 0

6 4

5 7 0

6 2

6 6 0

5 9

1 6 Mn C r B 5

1 .7 1 6 0

1 0

4 0

5 5 0

6 2

1 4 0

1 8 7

5 3 0

6 4

5 7 0

6 2

6 5 0

5 9

2

5

—

—

—

—

5 7 0

6 2

6 1 0

6 0

—

—

5

1 0

5 7 0

6 0

1 5 2

2 0 1

5 5 0

6 2

5 9 0

6 0

6 8 0

5 7

2 0 Mn C r S 5

1 .7 1 4 9

1 0

4 0

5 7 0

6 0

1 5 2

2 0 1

5 5 0

6 2

5 9 0

6 0

6 7 0

5 7

2

5

—

—

—

—

5 0 0

—

—

—

—

—

5

1 0

5 0 0

6 2

1 3 5

1 8 5

4 8 0

6 4

5 2 0

6 2

—

—

1 2 C r M o4

1 .7 2 0 1

1 0

4 0

5 0 0

6 2

1 3 5

1 8 5

4 8 0

6 4

5 2 0

6 2

2

5

—

—

—

—

5 5 0

6 2

5 9 0

6 0

—

—

5

1 0

5 5 0

6 0

1 4 0

1 8 7

5 3 0

6 2

5 7 0

6 0

6 6 0

5 7

1 8 C r M o4

1 8 C r M o S 4

1 .7 2 4 3

1 .7 2 4 4

1 0

4 0

5 5 0

6 0

1 4 0

1 8 7

5 3 0

6 2

5 7 0

6 0

6 5 0

5 7

2

5

—

—

—

—

5 6 0

6 2

6 0 0

6 0

—

—

5

1 0

5 6 0

6 0

1 4 0

1 8 7

5 4 0

6 2

5 8 0

6 0

6 7 0

5 7

2 0 M o C r 4

2 0 M o C r S 4

1 .7 3 2 1

1 .7 3 2 3

1 0

4 0

5 6 0

6 0

1 4 0

1 8 7

5 4 0

6 2

5 8 0

6 0

6 6 0

5 7

2

5

—

—

—

—

5 2 0

6 4

5 6 0

6 2

—

—

5

1 0

5 2 0

6 2

1 3 7

1 8 7

5 0 0

6 4

5 4 0

6 2

6 4 0

5 9

1 0 Ni C r 5 -4

1 . 5 8 0 5

1 0

4 0

5 2 0

6 2

1 3 7

1 8 7

5 0 0

6 4

5 4 0

6 2

6 3 0

5 9

2

5

—

—

—

—

5 0 0

6 4

5 4 0

6 2

—

—

5

1 0

5 0 0

6 2

1 3 0

1 8 0

4 8 0

6 4

5 2 0

6 2

6 2 0

5 9

1 2 Ni C r 3 -2

1 . 5 7 0 1

1 0

4 0

5 0 0

6 2

1 3 0

1 8 0

4 8 0

6 4

5 2 0

6 2

6 1 0

5 9

1 M p a=1 N / mm2

py

gy

g

,

gy,

g

,

py,()



P a g e1 2

E N1 0 2 6 3 - 3 : 2 0 0 1

©B S I 1 3 S e

p t em b er 2 0 0 1

T a b l e 6 ( c on c

l u d e d )

D el i v er y c on d i t i on

S t e el gr a d e

Di am e t er

+ A C

+ F P

+ U+ C + A C

+ U+ C + A C + L C

+ A C + C


H

B

S t e el n am e

S t e el

n um b er

a b ov e

mm

u p t o

mm

R m

m ax .

MP a

Z mi n.

%

mi n

m ax

R m

m ax .

M p a

Z mi n.

%

R m

m ax .

MP a

Z mi n.

%

R m

m ax .

MP a

Z mi n

.

%

2

5

—

—

—

—

6 0 0

6 2

6 4

0

6 0

—

—

5

1 0

6 0 0

6 0

1 5 6

2 0 7

5 8 0

6 2

6 2

0

6 0

7 2 0

5 7

1 7 C r Ni 6 - 6

1 . 5 9 1 8

1 0

4 0

6 0 0

6 0

1 5 6

2 0 7

5 8 0

6 2

6 2

0

6 0

7 1 0

5 7

2

5

—

—

—

—

5 9 0

6 2

6 3

0

6 0

—

—

5

1 0

5 9 0

6 0

1 4 9

1 9 4

5 7 0

6 2

6 1

0

6 0

7 2 0

5 7

2 0 Ni C r M o

2 -2

2 0 Ni C r M o

S 2 -2

1 . 6 5 2 3

1 . 6 5 2 6

1 0

4 0

5 9 0

6 0

1 4 9

1 9 4

5 7 0

6 2

6 1

0

6 0

7 1 0

5 7

2

5

—

—

—

—

6 1 0

6 0

6 5

0

5 8

—

—

5

1 0

6 1 0

5 8

1 4 9

2 0 1

5 9 0

6 0

6 3

0

5 8

7 3 0

5 5

2 0 Ni C r M o

S 6 -4

1 . 6 5 7 1

1 0

2 5

6 1 0

5 8

1 4 9

2 0 1

5 9 0

6 0

6 3

0

5 8

7 2 0

5 5

1 M p a=1 N / mm2

py

gy

g

,

gy,

g

,

py,()



P a g e1 3

E N1 0

2 6 3 - 3 : 2 0 0 1


0 1

T a b l e7 —

H ar d n e s sl i mi t sf or s t e el gr a d e swi t h s p e ci f i e

d ( n or m al ) h ar d en a b i l i t y ( + H gr a d e s—

s e e 6 . 5 .1 )

S t e el gr a d e s

H ar d n e s sHR C a t a d i s t an c e

f r om q u en ch e d en d

of t e s t pi e c e ( i n

mm ) of :

S t e el n am e

S t e el

n um b er

S ym b ol

H ar d en

i n g

t em p er a

t ur e

° C 5

° C

L i mi t s

of

r an g e

1 , 5

3

5

7

9

1 1

1 3

1 5

2 0

2 5

3 0

3

5

4 0

m ax .

4 6

4 5

4 4

4 1

3 9

3 5

3 2

2 8

2 1

—

—

—

—

1 8 MnB 4

1 . 5 5 2 1

+H

8 9 0

mi n.

4 0

3 8

3 7

3 0

2 1

—

—

—

—

—

—

—

—

m ax .

4 9

4 8

4 7

4 5

4 2

3 9

3 5

3 2

2 4

2 0

—

—

—

2 2 MnB 4

1 . 5 5 2 2

+H

8 8 0

mi n.

4 3

4 1

4 0

3 2

2 3

—

—

—

—

—

—

—

m ax .

4 7

4 4

4 0

3 3

2 9

2 7

2 5

2 4

2 3

2 1

—

—

—

1 7 C r 3

1 7 C r S 3

1 .7 0 1 6

1 .7 0 1 4

+H

+H

8 8 0

mi n.

3 9

3 5

2 5

2 0

—

—

—

—

—

—

—

—

—

m ax .

4 7

4 6

4 4

4 1

3 9

3 7

3 5

3 3

3 1

3 0

2 9

2 8

2 7

1 6 Mn C r 5

1 6 Mn C r S 5

1 .7 1 3 1

1 .7 1 3 9

+H

+H

8 7 0

mi n.

3 9

3 6

3 1

2 8

2 4

2 1

—

—

—

—

—

—

—

m ax .

4 7

4 6

4 4

4 1

3 9

3 7

3 5

3 3

3 1

3 0

2 9

2 8

2 7

1 6 Mn C r B 5

1 .7 1 6 0

+H

8 7 0

mi n.

3 9

3 6

3 1

2 8

2 4

2 1

—

—

—

—

—

—

—

m ax .

4 9

4 9

4 8

4 6

4 3

4 2

4 1

3 9

3 7

3 5

3 4

3 3

3 2

2 0 Mn C r S 5

1 .7 1 4 9

+H

8 7 0

mi n.

4 1

3 9

3 6

3 3

3 0

2 8

2 6

2 5

2 3

2 1

—

—

—

m ax .

4 4

4 3

4 1

3 8

3 4

3 0

2 8

2 7

2 3

2 1

—

—

—

1 2 C r M o4

1 .7 2 0 1

+H

8 7 0

mi n.

3 6

3 4

3 0

2 6

2 2

—

—

—

—

—

—

—

—

m ax .

4 7

4 6

4 5

4 2

3 9

3 7

3 5

3 4

3 1

2 9

2 8

2 7

2 6

1 8 C r M o4

1 8 C r M o S 4

1 .7 2 4 3

1 .7 2 4 4

+H

+H

8 8 0

mi n.

3 9

3 7

3 4

3 0

2 7

2 4

2 2

2 1

—

—

—

—

—

m ax .

4 9

4 7

4 4

4 1

3 8

3 5

3 3

3 1

2 8

2 6

2 5

2 4

2 4

2 0 M o C r 4

2 0 M o C r S 4

1 .7 3 2 1

1 .7 3 2 3

+H

+H

9 1 0

mi n.

4 1

3 7

3 1

2 7

2 4

2 2

—

—

—

—

—

—

—

m ax .

4 1

3 9

3 7

3 4

3 2

3 0

—

—

—

—

—

—

—

1 0 Ni C r 5

1 . 5 8 0 5

+H

8 8 0

mi n.

3 2

2 7

2 4

2 2

—

—

—

—

—

—

—

—

—

m ax .

4 3

4 0

3 5

2 6

2 1

—

—

—

—

—

—

—

—

1 2 Ni C r 3 -2

1 . 5 7 0 1

+H

8 7 0

mi n.

3 7

3 2

2 5

—

—

—

—

—

—

—

—

—

—

m ax .

4 7

4 7

4 6

4 5

4 3

4 2

4 1

3 9

3 7

3 5

3 4

3 4

3 3

1 7 C r Ni 6 - 6

1 . 5 9 1 8

+H

8 7 0

mi n.

3 9

3 8

3 6

3 5

3 2

3 0

2 8

2 6

2 4

2 2

2 1

2 0

2 0

m ax .

4 9

4 8

4 5

4 2

3 6

3 3

3 1

3 0

2 7

2 5

2 4

2 4

2 3

2 0 Ni C r M o2 -2

2 0 Ni C r M o S 2 -2

1 . 6 5 2 3

1 . 6 5 2 6

+H

+H

9 2 0

mi n.

4 1

3 7

3 1

2 5

2 2

2 0

—

—

—

—

—

—

—

m ax .

4 9

4 9

4 8

4 8

4 7

4 7

4 6

4 4

4 1

3 9

3 8

3 7

3 6

2 0 Ni C r M o S 6 -4

1 . 6 5 7 1

+H

8 8 0

mi n.

4 1

4 0

3 9

3 6

3 3

3 0

2 8

2 6

2 3

2 1

—

—

—

py

gy

g

,

gy,

g

,

py,()



P a g e1 4

E N1 0 2 6 3 - 3 : 2 0 0 1

©B S I 1 3 S e

p t em b er 2 0 0 1

T

a b l e 8 —

H ar d n e s sl i mi t sf or s t

e el gr a d e swi t h r e s t r i c t e d h ar d e

n a b i l i t y s c a t t er b an d s ( + HH an d + HL gr a d e s—

s e e 6 . 5 .2 )

S t e el gr a d

e s

H ar d n e s sHR C a t a d i s t an c e

f r om q u en ch e d en d

of t e s t pi e c e ( i n

mm ) of

S t e el n am e

S t e el

n um b er

S ym b ol

H ar d eni n

g

t em p er a t u

r e

° C 5 ° C

L i mi t s

of

r an g e

1 , 5

3

5

7

9

1 1

1 3

1 5

2 0

2 5

3 0

3 5

4 0

m ax .

4 7

4 4

4 0

3 3

2 9

2 7

2 5

2 4

2 3

2 1

—

—

—

1 7 C r 3

1 7 C r S 3

1 .7 0 1 6

1 .7 0 1 4

+HH

+HH

mi n.

4 2

3 8

3 0

2 4

2 0

—

—

—

—

—

—

—

—

m ax .

4 4

4 1

3 5

2 9

2 5

2 3

2 1

2 0

—

—

—

—

—

1 7 C r 3

1 7 C r S 3

1 .7 0 1 6

1 .7 0 1 4

+HL

+HL

8 8 0

mi n.

3 9

3 5

2 5

2 0

m ax .

4 7

4 6

4 4

4 1

3 9

3 7

3 5

3 3

3 1

3 0

2 9

2 8

2 7

1 6 Mn C r 5

1 6 Mn C r S 5

1 .7 1 3 1

1 .7 1 3 9

+HH

+HH

mi n.

4 2

3 9

3 5

3 2

2 9

2 6

2 4

2 2

2 0

—

—

—

—

m ax .

4 4

4 3

4 0

3 7

3 4

3 2

3 0

2 8

2 6

2 5

2 4

2 3

2 2

1 6 Mn C r 5

1 6 Mn C r S 5

1 .7 1 3 1

1 .7 1 3 9

+HL

+HL

8 7 0

mi n.

3 9

3 6

3 1

2 8

2 4

2 1

m ax .

4 7

4 6

4 4

4 1

3 9

3 7

3 5

3 3

3 1

3 0

2 9

2 8

2 7

1 6 Mn C r B 5

1 .7 1 6 0

+HH

mi n.

4 2

3 9

3 5

3 2

2 9

2 6

2 4

2 2

2 0

—

—

—

—

m ax .

4 4

4 3

4 0

3 7

3 4

3 2

3 0

2 8

2 6

2 5

2 4

2 3

2 2

1 6 Mn C r B 5

1 .7 1 6 0

+HL

8 7 0

mi n.

3 9

3 6

3 1

2 8

2 4

2 1

—

—

—

—

—

—

—

m ax .

4 9

4 9

4 8

4 6

4 3

4 2

4 1

3 9

3 7

3 5

3 4

3 3

3 2

2 0 Mn C r S 5

1 .7 1 4 9

+HH

mi n.

4 4

4 2

4 0

3 7

3 4

3 3

3 1

3 0

2 8

2 6

2 5

2 4

2 3

m ax .

4 6

4 6

4 4

4 2

3 9

3 7

3 6

3 4

3 2

3 0

2 9

2 8

2 7

2 0 Mn C r S 5

1 .7 1 4 9

+HL

8 7 0

mi n.

4 1

3 9

3 6

3 3

3 0

2 8

2 6

2 5

2 3

2 1

—

—

—

m ax .

4 4

4 3

4 1

3 8

3 4

3 0

2 8

2 7

2 3

2 1

—

—

—

1 2 C r M o4

1 .7 2 0 1

+HH

mi n.

3 9

3 7

3 4

3 0

2 6

2 1

—

—

—

—

—

—

—

m ax .

4 1

4 0

3 7

3 4

3 0

2 6

2 3

2 0

—

—

—

—

—

1 2 C r M o4

1 .7 2 0 1

+HL

8 7 0

mi n.

3 6

3 4

3 0

2 6

2 2

—

—

—

—

—

—

—

—

m ax .

4 7

4 6

4 5

4 2

3 9

3 7

3 5

3 4

3 1

2 9

2 8

2 7

2 6

1 8 C r M o4

1 8 C r M o S 4

1 .7 2 4 3

1 .7 2 4 4

+HH

+HH

mi n.

4 2

4 0

3 8

3 4

3 1

2 8

2 6

2 5

2 2

2 0

—

—

—

m ax .

4 4

4 3

4 1

3 8

3 5

3 3

3 1

3 0

2 7

2 5

2 4

2 3

2 2

1 8 C r M o4

1 8 C r M o S 4

1 .7 2 4 3

1 .7 2 4 4

+HL

+HL

8 8 0

mi n.

3 9

3 7

3 4

3 0

2 7

2 4

2 2

2 1

—

—

—

—

—

m ax .

4 9

4 7

4 4

4 1

3 8

3 5

3 3

3 1

2 8

2 6

2 5

2 4

2 4

2 0 M o C r 4

2 0 M o C r S 4

1 .7 3 2 1

1 .7 3 2 3

+HH

+HH

mi n.

4 4

4 0

3 5

3 2

2 9

2 6

2 4

2 2

—

—

—

—

—

m ax .

4 6

4 4

4 0

3 6

3 3

3 1

2 9

2 7

2 4

2 2

2 1

2 0

2 0

2 0 M o C r 4

2 0 M o C r S 4

1 .7 3 2 1

1 .7 3 2 3

+HL

+HL

9 1 0

mi n.

4 1

3 7

3 1

2 7

2 4

2 2

—

—

—

—

—

—

—

m ax .

4 1

3 9

3 7

3 4

3 2

3 0

—

—

—

—

—

—

—

1 0 Ni C r 5 -4

1 . 5 8 0 5

+HH

mi n.

3 3

2 9

2 6

2 4

2 1

2 0

—

—

—

—

—

—

—

m ax .

3 8

3 5

3 2

3 0

2 7

2 5

—

—

—

—

—

—

—

1 0 Ni C r 5 -4

1 . 5 8 0 5

+HL

8 8 0

mi n.

3 2

2 7

2 4

2 2

—

—

—

—

—

—

—

—

—

py

gy

g

,

gy,

g

,

py,()



P a g e1 5

E N1 0

2 6 3 - 3 : 2 0 0 1


0 1

T a b l e 8 ( c on c

l u d e d )

S t e el gr a d

e s

H ar d n e s sHR C a t a d i s t an c ef r om q u en ch e d en d

of t e s t pi e c e ( i nm

m ) of :

S t e el

n am e

S t e el

n um b er

S ym b ol

H ar d eni n g

t em p er a t ur e

° C 5 ° C

L i mi t s

of

r an g e

1 , 5

3

5

7

9

1 1

1 3

1 5

2 0

2 5

3 0

3 5

4 0

m ax .

4 7

4 7

4 6

4 5

4 3

4 2

4 1

3 9

3 7

3 5

3 4

3 4

3 3

+HH

mi n.

4 2

4 1

3 9

3 8

3 6

3 4

3 2

3 0

2 8

2 6

2 5

2 5

2 4

m ax .

4 4

4 4

4 3

4 2

3 9

3 8

3 7

3 5

3 3

3 1

3 0

2 9

2 9

1 7 C r Ni 6 - 6

1 . 5

9 1 8

+HL

8 7 0

mi n.

3 9

3 8

3 6

3 5

3 2

3 0

2 8

2 6

2 4

2 2

2 1

2 0

2 0

2 0 Ni C r M o

1 . 6

5 2 3

+HH

m ax .

4 9

4 8

4 5

4 2

3 6

3 3

3 1

3 0

2 7

2 5

2 4

2 4

2 3

2 0 Ni C r M o

1 . 6

5 2 6

+HH

mi n.

4 4

4 1

3 6

3 1

2 7

2 4

2 2

2 1

—

—

—

—

—

2 0 Ni C r M o

1 . 6

5 2 3

+HL

m ax .

4 6

4 4

4 0

3 6

3 1

2 9

2 7

2 6

2 3

2 1

2 0

2 0

—

2 0 Ni C r M o

1 . 6

5 2 6

+HL

9 2 0

mi n.

4 1

3 7

3 1

2 5

2 2

2 0

—

—

—

—

—

—

—

m ax .

4 9

4 9

4 8

4 8

4 7

4 7

4 6

4 4

4 1

3 9

3 8

3 7

3 6

+HH

mi n.

4 4

4 3

4 2

4 0

3 8

3 6

3 4

3 2

2 9

2 7

2 6

2 5

2 4

m ax .

4 6

4 6

4 5

4 4

4 2

4 1

4 0

3 8

3 5

3 3

3 2

3 1

3 0

2 0 Ni C r M o

S 6 -4

1 . 6

5 7 1

+HL

8 8 0

mi n.

4 1

4 0

3 9

3 6

3 3

3 0

2 8

2 6

2 3

2 1

—

—

—

py

gy

g

,

gy,

g

,

py,()



BS EN10263-3:2001

BSI

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W4 4AL

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py

gy

g

,

gy,

g

,

py,()

Documents

BS en 10263.3-2001TDC for Case Hardening Steel