quality level c

8/9/2019 Quality Level C

1/17

N

O.

REFERE

NCE

IMPERFECTION

DESIGNATION

REMARKS THICKNESS,

t MM

QUALITY LEVEL, C

SURFACE IMPERFECTIONS1 100 Crack 0.5 Not permitted2 104 Crater Crack 0.5 Not permitted

3 2017 Surface pore Maximum dimension of a singe pore for!" #utt $eds

" %et $eds

0.5 to 3 Not permitted

Maximum dimension of a singe pore for!

" #utt $eds

" %et $eds

& 3

d ' 0.2 s( #ut max. 2mm

d ' 0.2 a( #ut max. 2mm4 2025 )nd crater pipe 0.5 to 3

& 3

Not permitted

* ' 0.1 t( #ut max. 1mm

5 401 +ack of fusion

,incompete fusion-

""""""""""""""""""""""""""""""""""""""""""""""

""

0.5 Not permitted

Micro ack of fusion n/ detecta#e #/ micro examination 0.5 ermitted 4021 ncompete root

penetration

n/ for singe side #utt $eds 0.5 Not permitted

7 5011

5012

Continuous

undercut

ntermittent

undercut

Smoot* transition is reuired 0.5 to 3

& 3

S*ort imperfections!

* ' 0.1 t

* ' 0.1 t( #ut max. 0.5mm


2/17

5013 S*rinkage grooe Smoot* transition is reuired 0.5 to 3

& 3

S*ort imperfections!* ' 0.1 t


* ' 0.1 t( #ut max. 1 mm6 502 )xcess $ed meta

,#utt $ed-

Smoot* transition is reuired 0.5 * ' 1mm 0.15 #( #ut

max. 7mm

10 503 )xcessie conexit/,%et $ed-

0.5 * ' 1mm 0.15 #( #utmax. 4mm

11 504 )xcess penetration 0.5 to 3

& 3

* ' 1mm 0.3 #

* ' 1mm 0. #( #ut

max. 4mm


3/17

12 505 ncorrect $ed toe 8utt $eds 0.5 9 1100

:iet $eds 0.5 9 1000

13 50 erap 0.5 Not permitted

14 506511

Saggingncompete/ %ed

grooe

Smoot* transition is reuired 0.5 to 3

& 3

S*ort imperfections!* ' 0.1 t


* ' 0.1 t( #ut max. 1 mm15 510 """"""""""""""""""""""""""""""""""""""""" 0.5 Not permitted


4/17

1 512 )xcessie

as/mmetr/ of %et

$ed

,excessie uneua eg

engt*-

n cases $*ere an as/mmetric %et $ed

*as not #een prescri#ed.

0.5 * ' 2mm 0.15 a

17 515 ;oot concait/ Smoot* transition is reuired 0.5 to 3

& 3

* ' 0.1 t


* ' 0.1 t( #ut max. 1 mm

1 51 ;oot porosit/ Spong/ formation at t*e root of a $ed

due to #u##ing of t*e $ed meta at t*emoment of soidi%cation ,e.g. ack of gas

#acking-

0.5 Not permitted

16 517 oor restart """""""""""""""""""""""""""""""""""""""""""""""" 0.5 Not ermitted


5/17

20 5213 nsu


6/17

INTERNAL IMPERFECTIONS

1 100 Cracks > t/pes of cracks except microcracks

and crater cracks

0.5 Not permitted

2 1001 Microcracks > crack usua/ on/ isi#e under t*e

microscope ,50x-

0.5 >cceptance depends on

t/pe of parent materia

$it* particuar reference

to crack sensitiit/.3 2011

2012

@as pore

Aniform/

distri#uted porosit/

=*e foo$ing conditions and imits for

imperfections s*a #e fu%ed!

a1: Maximum dimension of t*e area of

t*e imperfections ,incusie of

s/stematic imperfection- reated to t*e

proBected area

Note! orosit/ in t*e proBect area

depends on t*e num#ers of a/ers

,oume of t*e $ed-

a2: Maximum dimension of t*e cross"

sectiona area of t*e imperfections

,incusie of s/stematic imperfection-

reated to t*e fracture area ,on/

appica#e to test pieces! production test($eder or procedure uai%cation tests-

b:Maximum dimension for a singe pore

for

" 8utt $eds

0.5

0.5

0.5

:or singe a/er! ' 1.5

:or muti"a/er! ' 3

' 1.5

d ' 0.3 s( #ut max. 4mm

d ' 0.3 a( #ut max. 4mm


7/17

" :iet $eds

4 2013 Custered

,+ocaiDed porosit/-

;eference engt* for pis for 100mm.

=*e tota gas pore area $it*in t*e custer

is represented #/ a circe of diameter d>

surrounding a t*e gas pores.

0.5 d> ' 20mm or d>( max ' $p


8/17

=*e reuirements for a singe gas pore

s*a #e met #/ a t*e gas pores $it*in

t*is circe.

> permitted porous area s*a #e oca.

=*e possi#iit/ of t*e pore custer

masking ot*er imperfections s*a #e

taken into consideration.

f ? is ess t*an d>1 or d>2( $*ic*eer is

smaer( t*en t*e tota gas pore area is

represented #/ a circe of diameter d>C(

$*ere d>CE d>1 d>2 ?.

S/stematic custer porosit/ is not

permitted

d> corresponds to d>1( d>2 or d>C(

$*ic*eer is appica#e

5 2014 +inear porosit/ 8utt $eds 0.5 * ' 0.3 s( #ut max. 3mm

' s( #ut max. 50mm:iet $eds 0.5 * ' 0.3 a( #ut max. 3mm

' a( #ut max. 50mm


9/17


10/17

2015

201

)ongated cait/

$orm*oes

8utt $eds 0.5 * ' 0.3 s( #ut max. 3mm


' a( #ut max. 50mm7 202 S*rinkage cait/ 0.5 Not permitted

2024 Crater pipe

=*e arger aue of * or $i #e

measured

0.5 to 3

& 3

Not permitted

6 300

301

302

303

Soid incusions

Sag incusions

:ux incusions

xide incusions

8utt $eds 0.5 * ' 0.3 s( #ut max. 3mm


' a( #ut max. 50mm

10 304 Metaic incusionsot*er t*an copper

8utt $eds 0.5 * ' 0.3 s( #ut max. 3mm:iet $eds 0.5 * ' 0.3 a( #ut max. 3mm

11 3042 Copper incusions

""""""""""""""""""""""""""""""""""""""""""""

0.5 Not permitted

12 401 +ack of fusion

,incompete fusion-

0.5 Not permitted

4011 +ack of side $a

fusion


11/17

4012 +ack of inter"run

fusion

4013 +ack of root fusion

13 402 +ack of penetration = F Boint ,%et $ed- 0.5 Not permitted

=" Goint ,partia penetration- 0.5 S*ort imperfections!

8utt Boint! * ' 0.1 s or i(

#ut max. 1.5 mm

:iet Boint! * ' 0.1 a( #ut

max. 1.5 mm


12/17

8utt Boint ,partia penetration-

8utt Boint ,partia penetration- 0.5 Not permitted


13/17

IMPERFECTIONS IN JOINT GEOMETRY

1 507 +inear misaignment =*e imits reate to deiations from t*e

correct position. Aness ot*er$ise

speci%ed( t*e correct position is t*at

$*en t*e centreines coincide5071 +inear misaignment

#et$een pates

ates and ongitudina $eds 0.5 to 3

& 3

* ' 0.2mm 0.15 t

* ' 0.15 t #ut max. 4mm

5072 =ranserse/ circuar$eds at c/indrica

*oo$ sections

Circumferentia $eds 0.5 * ' 0.5 t #ut max. 3mm


14/17

2 17 ncorrect root gapfor %et $eds

@ap #et$een t*e parts to #e Boined.@aps exceeding t*e appropriate imit

ma/( in certain cases( #e compensated

for #/ a corresponding increase in t*e

t*roat t*ickness.

0.5 to 3

& 3

* ' 0.3mm 0.1 a

* ' 0.5mm 0.2 a( #ut

max. 3mm

MULTIPLE IMPERFECTIONS1 None Mutipe

imperfections in an/

cross section

*1 *2 *3 *4E H * 0.5 to 3

& 3

Not permitted

Maximum tota *eig*t of

imperfections!

H * ' 0.3 t or ' 0.2 a


15/17

*1 *2 *3E H *

2 None roBected or cross"

sectiona area in t*e

ongitudina

direction

Case 1 ,? & 3-

*1x 1 *2 x 2 *3x 3E H * x

0.5 H * x '


16/17

Case 2 ,? I 3-

h1x l

1+h

2x l

2(h2+h32 )x D+h3 x l3= h xl

=*e sum of t*e areas H * x s*a #e

cacuated as a percentage to t*e

eauation area p x $p,case 1-


17/17

f ? is smaer t*an t*e s*orter engt* of

one of t*e neig*#ouring imperfections(

t*e fuest connection of t*e t$o

imperfections s*a #e appied to t*e sum

of imperfections ,case 2-

quality level c

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