En 876-Longitudinal Tensile Test

7/23/2019 En 876-Longitudinal Tensile Test

1/12

CEN

E N * 8 7 b

95 m

3404589 0335269

946 m

BRITISH STANDARD

Destructive

tests

on welds in

metallic materials

Longitudinal tensile

test

on

weld metal in fusion welded

joints

The European Standard EN 876

:

1995has the status of a

British Standard

ICs

25.160.40

BS

EN

876 : 1995

pyright European Committee for Standardizationovided by IHS under license with CEN Licensee=tetra pak/5944566001

Not for Resale, 08/16/2007 03:59:21 MDTreproduction or networking permitted without license from IHS

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2/12

CEN E N * 8 7 b 95 m 3404589 OLL5270 6 6 8 m

under the authorityof the

Standards Board and comes into Amd. No. Date

effect on

16

December 1996

O BSI 1996

The followingBSI references

relate

to

the work on this

standard:

Committee reference WEE12

Draft

for comment 92182868

DC

ISBNO

68 26322

8

BS

EN 87

:

1995

Text affected

Committees responsible for this

British

Standard

The preparation of

this

British Standard was entrusted to

Technical

Committee

WEE/2, Welding tests, upon which the foliowing bodies were represented:

Aluminium Federation

Association of Consulting Scientists

British Constructional Steelwork Association Ltd.

British Iron and Steel Producers Association

Electricity Association

Health and Safety Executive

Institution of Structural Engineers

Uoyds Register of Shipping

Ministry of Defence

Power Generation Contractors Association PGCA (BEAMA Ltd.)

TWI

Welding Manufacturers Association (BEAMA Ltd.)

pyright European Committee for Standardization

ovided by IHS under license with CEN Licensee=tetra pak/5944566001Not for Resale, 08/16/2007 03:59:21 MDTreproduction or networking permitted without license from IHS

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3/12

~~

E N EN+B76 7 5 3404589 O l l 5 2 7 l 5 T 4

BS EN 876

: 996

Contents

page

Committees responsible Inside front cover

National foreword ii

Foreword 2

Text of EN

876 3

i



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4/12

CEN E N t 7 b 95 3404589 OLL5272 430

BS

EN

876 :

1995

National

foreword

This

British Standard has been prepared by Technical Committee WEE/Z and is

the English language version of EN 876

:

1995Destructive t sts

on

welds i n

metallicmter2als ongitudinul

tensile

est on weld

metal

in on welded

joints published by the European Committee for Standardization (CEN).

EN 876 was produced s a result of international discussions in which the United

Kingdom took an active part.

EN 876 : 1995 supersedes tests detailed in BS 709 : 1983 which will be

amended.

Cross-reference

Publication

referred

to

EN

10002-1

Corresponding British

S t a n b d

BS

EN 10002

?Imsile

testing

of

metallic

materials

Part

1

:

1990Method of test at ambient temperature

Compliance with British Standard does not of itself confer

immunity

from

legai obigations.



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5/12

CEN

E N a 8 7 6 95

3 4 0 4 5 8 9

O L L 5 2 7 3 3 7 7

EUROPEAN STANDARD

NORME

EUROPENNE

EUROPISCHE NORM

E N 876

August 1995

ICs

25.160.40

Descriptors: welding fusion welding welded joints butt joints weld metal destructive tests tension

tests, tests

specimen

dimensions

English version

Destructive tests on welds in metallic

materials

Longitudinal tensile test

on

weld metal in

fusion welded joints

Essais destructifs des soudures sur matriaux

mtalliques Essai de traction longitudinale

du mtal fondu des assemblages souds par

fusion Schweigut in

SchmelzschweiBverbindungen

Zerstrende Prfung von

Schweiverbindungen an metallischen

Werkstoffen Langszugversuch an

This European Standard was approved by CEN dn 1995-07-14. CEN members

are bound to comply with the CENXENELEC 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

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 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

Comit Europen de Normalisation

Europisches Komitee fr Normung

Central Secretariat: rue de Stassart

36, B-1050

Brussels

1995 All rights of reproduction and communication in any form and by any means reserved in ali

countries to CEN and its members

Ref. No. EN 876

:

1995E



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6/12

C E N E N * 8 7 b

95 W 3q04589 0115274 203

m 2

EN

87

:

996

Foreword Contents

This European Standard has been prepared by the

lchnical Committee CEN/TC

121,

Welding, of

which the secretariat is held by DS.

Foreword

This European Standard shall

be

given the status of

a

national standard, either by publication

of

an

identical text or by endorsement, at the latest by

February 1996, and conflicting national standards

shall be withdrawn at the latest

by

February 1996.

According to the CENKENELEC 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

1

2

3

4

5

5.1

5.2

5.3

5 4

6

6.1

6.2

6.3

7

8

8.1

8.2

9

Scope

Normative reference

Principle

Denominations and symbols

Removal of test specimens

Removal

Marking

Heat treatment and/or ageing

Extraction

Machining

of

test specimens

Location

Dimensions

Surface quality

Conditions of testing

Test results

General

Examination of fracture surfaces

st report

Annex A

(informative)

lst report

page

2

3

3

3

3

3

3

3

3

4

4

4

4

4

5

5

5

5

5

6



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C E N E N x 7 6 95 W 3404589 0125275 1 4 T

1

Scope

This standard specifies the sizes of test specimens

and the test procedure for carrying out longitudinal

tensile

tests

on cylindrical test specimens in order

to determine the mechanical properties of weld

metal in

a

fusion welded joint.

This standard applies to metallic materials in all

forms of product with joints made by any fusion

welding process, having joint sizes that

are

sufficient to obtain cylindrical test specimens with

dimensions in accordance with EN 10002-1.

Unless otherwise specified for specific points in this

standard, the general principles of EN

10002-1

shall apply.

2 Normative reference

This

European Standard incorporates by dated or

undated reference, provisions from other

publications. These normative references are cited

at the appropriate places in the

text

and the

publications

are

listed hereafter. For dated

references, subsequent amendments to or revisions

of any of these publications apply to

this

European

Standard only when incorporated in it by

amendment or revision. For undated references the

latest edition of the publication referred to applies.

EN 10002-1 Metallic materia ls

h r t

1:

Method o

test

at ambient temperature)

mil. esting

3

Principle

An increasing tensile load is continuously applied

until rupture occurs in

a

cylindrical test specimen

taken longitudinally from the weld metal in a

welded joint.

Unless otherwise specified, the test shall be carried

out at ambient temperature

(23

f

5)

OC

4 Denominations and symbols

The denominations and symbols to be used for the

longitudinal tensile tests are specified

in EN 10002-1.

5

Removal of test specimens

5.1 Removal

The test specimen shall be removed longitudinally

from the welded joint of the manufactured product

or from the test piece. After machining, the

parallel length of the

test

specimen shall consist

only of weld metal (see figure

1

and figure 2 .

For the purpose of correctly positioning the test

specimen in the joint, the joint cross-section

at

both ends of the test specimen can be

macroetched.

Page 3

EN 876 : 996

5.2

Marking

Each

test

piece shall be marked to identify its

exact location in the manufactured product or in

the joint from which it has been removed.

Each test specimen shall be marked to identify

its

exact location in the test piece from which it

has

been removed.

When removed from the

test

piece, each

test

specimenshali be marked.

5.3 Heat treatment and/or ageing

No heat treatment shall be applied to the welded

joint or to the test specimen

unless it

is specified or

allowed by the relevant application standard

dealing with the welded joint to be tested. Details

of any heat treatment shall

be

recorded in the test

report.

If

natural ageing

of

aluminium alloys

takes

place, the time between welding and testing shall

be recorded.

NOTE.The presence of hydrogen in femus weld metals may

adversely affect the test results and suitable hydrogen release

treatment may be necessary.

Figure 1. Examples

of

location of test specimens

longitudinal plane section



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~

CEN E N J 8 7 b

95

m

3404589

O335276 O86 m

Page 4

EN

876 :

1995

5.4

Extraction

5.4.1

General

The mechanical or thermal processes used to

extract the test specimen shall not change the

properties of the test specimen in any way.

5.4.2 Steel

Shearing is excluded for thicknesses of more than

8

mm. If thermal cutting or other cutting methods

which could affect the cut surfaces are used to cut

the test specimen from the welded plate,

or

from

the test piece, the cuts shall be made at a distance

greater than or equal to 8

mm

from the surfaces of

the final parallel length of the test specimen.

Thermal cutting shall not be used parallel to the

original surface of the welded plate or of the test

piece.

5.4.3 Other metallic materials

Shearing and thermal cutting are excluded and

only machining (e.g. sawing and turning) shall be

used.

6 Machining of test specimens

6.1

Location

Unless otherwise specified in the particular

application standard dealing with the welded joint

under examination, the test specimens shall be

removed from the centre of the weld metal as

shown in figure

1

and the cross-section

s

shown in

figure 2 In the case where the test specimen is not

taken from mid-thickness, the distance from the

surfaces, t l , shall be recorded (see figure 2b). In

the case of very thick or double-sided welded

joints, more than one test specimen may be

removed at different locations through the

thickness (see figure 2c), in which

c se

he

distances, t l and h of each

test

specimen in the

joint cross-section shall be recorded.

6.2

Dimensions

Each test specimen shall have circular

cross-section, and its dimensions, expressed s

functions of the diameter d of the parallel length

It shall have a normal diameter d of 10mm

If

this

is not possible, the diameter shail be as large

as

possible but not less than 4 mm. The actual size

shall be recorded in the test report.

The gripped ends of the test specimens shallbe

compatible with the tensile testing machine used.

6.3

Surface quality

The tolerances specified in

EN

10002-1 shall apply.

Strain-hardening or excessive heating of the

material shall be avoided.

Shall conform to

EN

10002-1.

Fignre

2a.

All-weld metai test specimen for welding

consumable classification

Figure 2b. l s t specimen from a

joint

welded from

one side only

Figure 2c. Test specimen

from

a joint welded from

both sides

Fgure 2. Examples

of

location

of

test

specimens

Cross

section



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9/12

CEM EN*87b 95

=

3404589

O L L 5 2 7 7

T 1 2

Page

6

EN 876

:

1995

7

Conditions of testing

The test specimen shall be loaded gradually and

continuously in accordance with EN 10002-1.

8 Wst results

8.1 General

The test results shall be determined in accordance

8.2 Examination of fracture

surfaces

After rupture of the test specimen, the fracture

surfaces shall be examined and the existence

of

any imperfections that may have adversely affected

the test shall be recorded, including their

type,

size

and quantity.

if

fish eyes are present, they shall be

recorded and only their central

regions

shall be

considered

as

imperfections.

with EN 10002-1.

9

W s t

report

The test report shail include the following

information in addition to that given

in EN 10002-1:

- reference to this standard;

-

location of test specimen, sketch

if

required

(see figure 1 and

f i i r e

2);

-

test temperature,

if

outside the ambient

temperature;

- type and dimensions of imperfections

observed;

-

the diameter

d

An example of a typical test report

is

given

in annex

A



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10/12

CEN

E N t 8 7 6

95 3404589

OLL5278

959

Page

6

EN 876 : 1995

Annex

A

(informative)

Wst

report

No ........................................

According to WPS

...........

According

to

Manufacturer: ...................................................................................................................

Purpose of the examination: .................................................................................................

Form

of

product:

...............................................................................................................

Parent metal:

...................................................................................................................

Filler metsu: .....................................................................................................................

test result 'tensile test'

test result ................

Isrble A. l Longitudinal tensile test in accordance with EN 876

st

specimen

numbed

position

Dimension/

diameter

FP

N

Examiner or examining body:

Certified

by:

A

Z st

temperature

C

Remark

e g

fracture

appearance



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11/12

CEN EN*7b

9

3 4 0 4 5 8 9 O L L 5 2 7 9 895

=

BS

EN 87 :

996

List

of references

See national foreword.



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12/12

~

CEN

E N * 8 7 b 95 3404589 OLL5280

5 0 7

BS

EN

87 :1995

BSI

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En 876-Longitudinal Tensile Test

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