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58 views8 pagesA350 (M) 97
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/ 8
Designation: A 350/A 350M — 97
afl
SOCIETY FOR TESTING AND MATERIALS
Pest nh oa oak Sie Sans Seni ASTH
Standard Specification for
Carbon and Low-Alloy Steel Forgings, Requiring Notch
Toughness Testing for Piping Components’
‘Ti tan sss und the ed epaticn A ASIA 30M; eure following te digation ints the yar
of esinal slp on he ene ein he year of in revision. Armen pcos Ina he yar of ls apa
‘sense ep e) sadces am orl change spe the ns eislon oe repprosa,
Tas sarah been approved for wse by agencies ofthe Deparimes of Dense. Const the DoD Inde of Spelctions and
Stands or te specific tar of we wich har teen dood bythe Deparment of efor
1. Scope
1.1 This specification? covers several grades of carbon and
tow-alloy steel forged or rng-roled flanges, forge fitings and
valves intended primarily for low-temperature service and
roquiting notch toughness testing. They are made to specified
dimensions, orto dimensional standards, such as the ANSI and
[APL Specifications referenced in Section 2. Although this
specification covers some piping components machined from
rolled bar and seamless tubular maverals (see 4.3.3) it does not
cover raw material produced in these product forms.
1.2 No limitation on size is intended beyond the ability of
the manufacturer to obtain the specified requirements. How-
ever, Clays 3 of Grade LF787 is only available in the
quenched-and-previpitation heat treated condition
1.3 Supplementary requirements are provided for use when
additional testing or inspection is desired. These shall apply
only when specified by the purchaser in the order.
1.4 "This specification is expressed in both inch-pound units
and in ST units, However, unless the order specifies the
applicable “M'” specification designation (SK units), the mate-
‘hal shall be furnished to ineh-pound units
1.5 The values stated in either inch-pound units oF ST units
ae to be regarded separately as standard. Within the text, the
SI units are shown in brackets. ‘The values stated in each
system are not exact equivalents: therefore, each system must
be used independently of the other. Combining values from the
‘wo systems may result in nonconformance with the speci
cation.
Nore I-Refer to Test Methods and Definitions A 370 for notes on
significance of notched-bar impact esting.
2. Referenced Documents
2.1 ASTM Standards:
A275/4 275M ‘Test Method for Magnetic Particle Exami
"Tis plication i unr he uric of ASTM Carmite A- o Sic
‘Sails See and Ret Alloys und the dint xpos of Steams
‘AOL 22 on Sk! Furing and Wrought Fag or Ppng Applications and Boing
Masri for Ppmg aod Spal Pispose Appleton
‘Curent edition appoved Mach 0, 997 Publise November 1997 Originals
tse a A 35052. Las previous eon A 384 350M See.
"ar ASME Baler and Pressure Vetel Code aphcadon sce slated Sp
ett $0350 in Seton If tha Code
nation of Steel Forgings?
‘A370 Test Methods and Definitions for Mechanical Testing
of Stee! Products*
ATSI Test Methods, Practices, and Terminology for
Chemical Analysis of Stee] Products*
‘A788 Specification for Steel Forgings, General Require-
ments?
165 Practice for Liquid Penetrant Examination’
E381 Method of Macroetch Testing Steel Bars, Billets
Blooms, and Forgings®
2.2. MSS Standard:
MSS-SP 25 Standard Marking System for Valves, Fittings,
Flanges and Union:
23. ASME Standard:
Section IX, Welding Qualifications, ASME Boiler and Pres-
sure Vessel Code*
24 AWS Standards:
A5.1 Mild Steel Covered Are-Welding Electrodes?
5.5 Low-Alloy Stecl Covered Arc-Welding Electrodes”
25 ANSI Standards:"
B 16.5 Steel Pipe Flanges and Flanged Fittings
B 16.9 Factory-Made Weonght Stee! Butt-Welding Fittings
B 16.10 Face-to-Face and End-io-End Dimensions of Fer-
rous Valves
B 16.11 Forged Steel Fittings, Socket-Welding and
‘Threaded
B 16.30 Unfired Pressure Vessel Flange Dimensions
B 16.47 Lange Diameter Steel Flanges
2.6 API Standards:"
> anal lnk of ASTM Stondais, Ve} 01.08,
‘Annual Book of ASTM Standards, Vol O10
annual 8008 of ASTM Sandan. Vo 0308.
* hana Book of ASTI Stndant, Va O30
” avaiable from he ManiatwersStrdaizaon Society ofthe Valve so
ings day, 115 N, Fon Myer Drive, Atingon, VA 2238.
“Availabe fea AmescanSovisy of Mechania Engages, 348 B70 S.
ew Yor, NY 10017,
"avaliable ro Ameccan Welding Society, 550 Laeane Re. PO. ox 351080
asl rom Amica National Sanda Inia, 11 West 2nd. 3h
Flog New York, NY 10056
*avlabe fom American Peeleum laste, 1220 Suet NW, Wishing
ton, Be 2S fb A 350/ 350M
600 Steel Gate Valves with Flanged or Butt-Welding Ends
{602 Compact Design Carbon Steel Gate Valves for Refinery
Use
605 Large Diameter Carbon Steel Flanges
3. Ordering Information
3.1 It is the purchaser's responsibility w specify in the
purchase order all ordering information necessary to purchase
the needed material. Examples of such information include but
are not limited to the following:
3.41.1 Quantity,
3.1.2 Size and pressure class or dimensions (Tolerances and
surface finishes should be included),
3.1.3 Specification number, grade, and class if applicable
(The year date should be included),
3.1.4 Supplementary requirements, and
3.1.5 Additional requirements (See Table 1
641.33, 81, 13.1, 13.2, and 14.2),
footnotes,
4, Manufacture
4,1. Melting Process—The steel shall be produced by any of
the following primary processes: open-hearth, basic oxygen,
celeetric-furmace, or vacuum-induction melting (VIM). ‘The
primary melting may incorporate separate degassing or refin-
ing, and may be followed by secondary melting using electro-
slag remelting (ESR), or vacuum-are remelting (VAR),
ALL The steel shall be fully killed, fine-grain practice
4.12 The molten steel may be vacuum treated prior to or
during pouring of the ingot.
42 Discard—A sufficient discard shall be made to secure
freedom from injurious piping and undue segregation,
43 Forging Process:
43.1. Material for forgings shalt consist of ingots, or forged,
rolled, or strandcast blooms, billets, slabs, or bars.
4.3.2 The finished product shall be a forging as defined in
the Terminology section of Specification A 788,
3.3 Except for flanges of all types, hollow. cylindrically-
shaped parts may be machined from rolled bar or seamless
tubular materials provided that the axial length of the part is,
approximately parallel to the metal flow lines of the stock.
‘Other parts, excluding flanges of all types, may be machined
TABLE 1 Chomical
from hot-rolled or forged bar up through and including NPS4,
Elbows, return bends, tees, and header tees shall not be
machined directly from bar stock
44 Heat Treatment
44.1 After hot working and before reheating for heat
treatment, the forging shall be allowed t© cool substantially
below the transformation range,
4.4.2 Forgings of grades other than Grade L787 shall be
furnished in the normalized, or in the normalized and tem-
pered, or inthe queneiied and tempered condition described by
the following procedures:
4.4.2.1 Normatize—Heat (o a temperature that produces an
austenitic structure, holding sulficient ime to attain uniform
temperature throughout, Cool uniformly in still air.
4.42.2 Normalize and Temper—Subsequent to normalize,
reheat 0 1100°F [590°C] minimum, holding at temperature
‘minimum of 30 min/in, [30 min/25 mm} of maximum thick-
ress, but in no case less than 30 min. Cool in stil aie.
4423 Quench and Temper—The procedure for quenching,
Shall consist of either (7) fully austeniizing the forgings
followed by quenching ina suitable liquid medium or (2) using
4 multiple stage procedure whereby the forging is fist fully
austenitized and rapidly cooled, then reheated to partially
reaustenitize, followed by quenching in 2 suitable liquid
‘medium. All quenched forgings shall be tempered by reheating
to a temperature between 1100°F [590°C} and the lower
transformation temperature, holding at temperature a minimum
of 30 minvin, (30 min/25 mm] of maximum thickness bur in no
case less than 30 min, Cool in still at
44.3 Grade LF787 forgings shall be furnished in either the
normalized-and-preeipitation heat weated condition or in the
quenched-and-precipitation heat treated condition, The heat
treatment procedures shall be as follows
443.1 Normalized-and-Precipitation Heat Treared—Heat
to a temperature in the range ftom 1600 to 1725°F [870 to
940°C}, hold at the temperature for a time sufficient to attain
uniform temperature throughout, soak at the temperature. for
not less than 1/2 h, and remove from the furnace and cool in air.
Subsequently, heat to a temperature in the range from 1000 to
1200°F [540 to 650°C], soak at the temperature for nor less
than 1/2 h, and coo! at any convenient rate
Requirements?
ment Compoiion, 7
Grader Gadeie Gamo Grade fs ~~ LF ~Cave LPG UPTO
Gano mae 036 038 020 00 22 020 Gar
Marganece osp-t3s 090-198 0.08 mex 080-135 1is-ts0 odn-108 040-070
Prosper, max D035, Daas G01 ‘303s ‘0028 003s” C25
Suton mas 2.000 aoe Boe. 00 9.025, Bom oes
Sion 015-090 035-09 o2ass 020-035 o15039 240 max
Note! 40min? 04d man? 3307 0-20) 020 max? 160224 070-100
Chromium osomme? osm? soma? ama? Oa ma® Oma” 08.00
Morden Oiemat? OB max®° Ozma? =O aman” tm O1Rmme?——OIS.IS
‘cooper ‘O4omm? = D0? =O max .AO ma 020 mae? bretas | 1oNt8O
Seer ‘002 max (0.02 max ‘02 max ‘0.2 a (0.2 rae 02m 02 min
Yana 0.08 max 0.08 max 2.08 max 0.03 ax doar osm 0. max
ivoues o0r-6030
“Anan vacuum carbor deoudation i reqared by Supemectary Require 5
te sion content shal Ge 0129s mam,
‘The sa of copper ck comium. varuaur and aye shal ot exG00d 100% an hat analy
Th Sum ol ehemiam apd mayodenam sal ao xcsod 0.32% on heal anaes.
* Revione fo Tate 1 approved Ai £0,196. 4) A 350/ 350M
44.3.2 Quenched-and-Precipitation Heat Treated—Heat to
‘2 iomperature in the range from 1600 to 1725°F [879 to
940°C], hold at the temperature for a time sufficient to attain
uniform temperature throughout, soak at the temperature for
not less than 1/2 h and quench in a suitable liquid medium by
immersion: reheat t0 2 temperature in the range from 1000 t0
1225°F [S40 © 665°C], hold at the temperature for not Less
than 1/2 h, and cool at any convenient rate
5. Chemical Composition,
5.1 Heat Analysis:
5.1.1 An analysis of each heat of steel shall be made by the
steel producer from samples taken preferably during. the
pouring of the heat. The results shall conform to Table 1
5.1.2 Steels to which lead has been added shall not be used,
5.1.3 Intentional additions of copper, nickel, chromium or
molybdenum to Grades LFI, LF2 and LF6 are not permitted.
Intentional additions of copper, chromium or molybdenum to
Grades LF3 or LFS are not permitted, Intentional additions of
chromium or molybdenum to Grade LF9 sre not permitted.
5.2 Product Analysis—An analysis may be made by the
purchaser from a forging representing exch heat of steel
‘Samples for analysis shall be taken midway between center and
surface of solid forgings, midway between inner and ovier
surfaces of hollow forgings, midway between center and
surface of full-size prolongations, oF from broken mechanical
test specimens. The chemical composition thus determined
shall conform to Table I, with the tolerances as stated in Table
Methods of Analysis—Test Methods, Practices, and
Terminology A 751 shall apply.
6. Mechanical Properties
6.1 Tension Tests:
6.1.1 Requirements—The material shall conform to require-
iments for tensite properties in Table 3,
6.1.1.1 The test specimen shall be obtained from a rough or
finished forging, or prolongation thereof, For forgings under
10000, at time of heat treatment, it may be obtained from
separately forged test blanks from the same heat of steel as the
production forgings. The test blank shall be reduced by forging
in a manner similar co that for the products represented, and
shall receive approximately the same hot working and
reduction and the same heat treatment as the finished products
represented. The test material shall be treated in the same
furnace at the same time as the forging it represents, subject to
the requirements of 6.1.2.4
6.1.1.2 The test specimen shall represent all forgings from
the same heat and heat-treatment load whose maximum
thicknesses do not exceed the thickness of the test forging or
blank by more than Y in, {6 mm],
6.1.2 Number of Tests—One tension test st room
temperature shall be made in accordance with 6.1.1.2 from
each heat in each heat-treatment load.
6.1.2.1 If heat treatment is performed in either a continuous
for a batch-type furnace controlled within +25°F [+ 14°C] of
the required heat-treatment temperature and equipped with
recording pyrometers so that complete records of heat
treatment are available and if the same heat-treating eycles are
used on the forgings represented by the tension test, then one
tension test from each heat shall be required, instead of one
tension test from each heat in each heat treatment Toad in
accordance with 6.1.1.2
6.13 Test Locations and Orientations—The test specimen
shall be removed from the heaviest section of the forging oF
test blank, at locations described in 6.1.3.1, 6.1.3.2, 6.1.3.3 or
as close to these locations as practical, subject to forging size
and geometry.
6.13.1 For forgings or rest blanks having a maximum
heat-treated thickness, 7, of 2 in, [50 mm} or less, the
longitudinal axis of the test specimen shall be taken at
TABLE 2. Product Analysis Tolerances
eement Penmissbe Vasiatons Over Mas Lint or Under Miku Li for Sie Ranges Shown,
Unt oF Mesinum of Tet00m* Over 100120014" Over 20010 400in* Over To GO
‘pected Ronge (64Sem?) (645 10 1290.em*] [128010 2500 em feaR0 Yo 5100 on}
ine ve nee er
Eaton waso nd oor ae 003 008
Manganese £2080 nat 003 O08 608 808
vee 09010 135 ret 08 05 08 07
(ver 125 10120 9 010 010 010 010
Phosphorus ‘or mines cay 0.005 do10 ore e010
Suir vermin aly 008 aor bor. 010
Shcon 0035 na ace ae 003 008
Newt ep angina 1.00 803 603 003 0.03
ever 100 10200 et 205 805 005 8.95
‘yer 200 0 £20 ih 007 oor oor oor
Copper ‘opto and nd 078 803 903 008 6.3
en0r 975 10.90 et 2.05 205 005 0.95
Crom 090 net 00 208 004 004
Raybasnum 1.020 201 oor oor oor
90" 20% 00 inet 003 03 003 003
Ccovumetar twos0ina oor oot oot Got
Yanan warding 010 bor ont oor oot
13910 0.25 ie 02 202 002 ow
nvogen po andincl 0.02 005, ‘005 00s: 00s
over 0.0219 0.19 re bon aot 20" 00"
“he sgnicant cous cacton of he forging shall be gover by the man body danete:
3 A 350/A 350m
TABLE 3_Tensile Properties at Room Temperature
oreses
UFianaurs U2 UFR and LFS re ie reer
Gat Semeg Ce Set caman don Cas? Gas
3
Toro aren Pa) oe)
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Yad strength, i, si Pare sola) sees) 7 ieeo) sesod | aniaiet vermis) “Serceo)” “Seen
‘Stancard rund specimen, © smal 2 2 2 20 20 »
Broportona specimen i Soin
£0 ange nan
Ship specmon fr wal Mesness 2 x0 » x 2 20 2 Ey
37 18.38 a over and
fot sol sao ood at
becton'min Sin 2: er)
Squat forcaeuining min engaton dete 19486 15 ABE IS sere 1S 48S atHs 1 sare teat
ie tp specmers nna ran
5/361. 0.94 rm): min ein zn
(58 nny
Fegbeten of sea, mins a 2 * “0 * 6 as 4“
1 See 6 for hares ea
2 Deteinas by ether the 0.2% ofect mete or the 0.5% enterson uncer kid mathe
Fer round specimens rk
‘mid-thickness and its mid-length s hall be a least 2in, {50 mm]
from a second heat treated surface, exclusive of the T
dimension surfaces. (This is normally referred to as 14 T by 2
in, (50 mm)
6.132 For forgings or test blanks having a maximum
heat-treated thickness, T; greater than 2 in, (50 mm, the central
‘axis of the test specimen shall be taken at least ¥4 T from the
nearest heat-treated surface and at least T or 4 in, (100 mm),
whichever is fess, from any second heat-treated surface.
6.1.3.3 With prior purchaser approval, tests may be taken at
4 depth (¢) corresponding to the distance from the area of
significant loading to the nearest heat treated surface and at
least twice this distance (21) from any second surface.
However, the test depth shall not be nearer to one treated
surface than 3 /4 in, (19 mm] and to the second treated surface
than I 1 /2 in, (38 mm], This method of test location would
normally. apply to contour-forged parts, or parts with thick
‘cross-sectional areas where 1 /4 TX T testing (6.1.3.2) is not
practical. Sketches showing the exact test locations shall be
approved by the purchaser when this method is used.
6.1.3.4 The test specimen shall have its longitudinal axis
located parailel to the direction of major working of the forging
or test blank:
6.1.4 Test Method—Testing shall be performed in
accordance with Test Methods and Definitions A 370. The test
specimen shal! be as large as is practicable and shall be
‘machined to the form and dimensions of Fig. 6 of Test Methods
‘and Definitions A 370. When seamless tubular materials are
used, testing shall be performed on longitudinal specimens in
accordance with Annex A2, Steel Tubular Products, of Test
Methods and Definitions A 370,
6.2 Impact Test:
6.2.1 Requirements—The material shall conform to the
requirements for impact properties in Table 4 when tested at
‘the applicable standard temperature in Table 5 within the limits
Of 6.2.4.2 and 6.2.4.3. When subsize specimens are used, the
TABLE 4 Charpy V.Notch Energy Requirements for Standard
Size [10 by 10 mm) Specimens
rade Minn impact Minimum impact
Energy Henutes or Energy Ported for
Average of Each Set One Specian rl of
Tee Sprernens, a Set te}
ee er)
awe 3118)
52, Cass 1 15 20
ur 1520)
UES cua + an2 15 201
LEE Class 2 sr 15 0)
LFS, Clase 1S (eo)
re. Clae 2 20 en
LFS, Clos 2 cal
FB, Cuca 2 an 2 207
‘TABLE § Standard Impact Test Temperature for Standard Size
[10 by 10 mm Spocimene
sate “ost Tonporatse, °F FO}
in —20 F289)
LF Case 1 “$0 [858]
Fe Oss 2 <0 (18)
rs 150-108)
LFS, Cacsee 1 and 2
LP8, Gasoes 1 and 2
156 Cee
ire
rar, clans 2
LFra? Clase 2
impact energy values obtained shall conform to Table 6 at
energy values proportional to standard size. Exceptions to this
equirement are permissible when supplement S4 is specified
by the purchaser. Impact tests may be made at temperatures
different from those in Table 5, provided that the test
temperature is at least as low as the intended service
temperature, and thatthe forging is suitably marked to identify
the reported test temperature. (fb A 350/A 350M
TABLE 6 Minimum Equivalont Absorbed Energy ftibt (J) for
Various Specimen Sizes"
Sanda 3/480 2/9sen 1/2am0 1/990 1/4800
Salo “froby —(i0by, {toby “frony. toby
fOr) 78mm) 6Smm) smn) Sm 28mm
Seq ete] one sa
shy sols) 8] 7H) BS
2h) oni) ora) 7) a)
U4 ai 70) 5) sis]
Svaghtina itelaion lor inimocite vows permited
6.2.1.1 The test specimen
obtained as in 6.1
6.2.2 Number of Tests—Three specimens shall constitute
fone test set. There shall be the same number of test sets as
tension tests in 6.1.2.
6.2.3 Test Locations and Orientations—The test specimen
shall be located and oriented as described in 6.1.3, The area
tunder the notch of the impact test specimen shall be used t0
locate the specimen with respect to the second heat-ireated
surface, The base of the notch shall be perpendicular to the
nearest heat-treated surface.
6.24 Test Method—The notched bar impact test shall be
made in accordance with the procedure for the Charpy V-notch
type test as described in Test Methods and Definitions A370.
624.1 Standard size specimens shown in Fig. 10 of Test
Methods and Definitions A 370 shall be used for the impact
fest, Where the material is of insufficient thickness, or the
shupe of the forging precludes standard size, the’ largest
obtainable subsize specimen described in Test Methods and
Definitions A 370 shall be used.
62.4.2 Where subsize specimens are used and represent
forged material with thicknesses equal to or greater than 0.394
in, {10 mm}, and where the largest obtainable specimen has a
width along the notch of at least 8 mm, such specimen shall be
tested at the temperature in Table 5. Where the largest
‘obtainable specimen has a width along the notch less than 8
mm, the temperature for testing shall be lower than the
temperature in Table 5 by the amount shown in Table 7 for the
actual specimen width tested.
shall be machined from materi
TABLE 7. Charpy impact Test Temperature Reduction Below
‘Table 5 Tost Temperature when the Subsize Charpy Impact Width
‘along Wotch is Less than 80% of the Forging Thickness
‘Sze oar Theses ofthe Material —_Tenperature
Reprosantes (208243), ‘Regu,
‘Charpy, osck Fro}
Specie Wath he
ser
Sandert 0998 10) Om
Stand 0.354 9) ow
Stands 035 a} of
Sye-ae ozs) 313)
a/e se 0276 7, ais)
2/3 30 0282 (687) 1016)
2/3 0236 6 5(6)
1/2 a 0407 8) 20)
3/2 eo 0.456 4) sou
1/3 see ovat (a3) 35,20)
13-08 098.9), 40122)
ia sie 0029 5) eo)
* Suaightire rorpoation for tees value a pared
24.3 Where subsize specimens are used and represent
forged material with thicknesses less than 0.394 in, (10 mm,
and where the largest obtainable specimen has a width along
the notch of at least 80% of the forging thickness, the
specimen shall be tested at the temperature in Table 5. Where
the largest obtainable specimen has a width along the notch of
less than 80 % of the rnaterial thickness, the temperature for
testing shall be lower than the temperature in Table 5 by an
amount equal to the difference (referring to Table 7) between
the temperature reduction corresponding to the thickness of the
material represented, and the temperature reduction
‘corresponding to the specimen width actually tested.
6.3 Hardness Test
6.3.1 Except when only one forging is produced, a
‘minimum of (wo forgings shall be hardness tested per batch or
‘continuous run as defined in 6.1.2.1 to ensure that hardness of
the forgings does not exceed 197 HB after heat treatment for
mechanial properties. The hardness measurements shall. be
made in accordance with Test Methods and Definitions A 370.
When only one forging is produced, it shall be hardness tested
to ensure that it meets the 197 HB maximum of this
specification. The purchaser may verify that this requirement
hhas been met by testing at any location on the forging, provided
that such testing does not render the forging useless.
7. Hydrostatic Test
7.1. Forgings manufactured under this specification shall be
capable of passing a hydrostatic test compatible with the rating
of the finished forging. Such tests shall be conducted by the
forging manufacturer only when Supplementary Requirement
9 is specified.
8, Workmanship, Finish, and Appearance
8.1 The forgings shall conform to the dimensions,
tolerances, and finish as specified on the purchaser's drawing
cor onder. Unless otherwise specified in the purchase order, the
fitings shail be cleaned to remove all scale and processing
compounds prior to final surface examination. ‘The cleaning
process shall not injure the surface finish, maienial properties,
for the metallurgical structure, The cleaned fittings shall be
protected to prevent recontamination. Protective coatings on
socket weld and butt welding fittings shall be suitable for
subsequent welding without removal of the coating, When
specified in the purchase order, parts may be furnished in the
asformed or as-forged condition.
8.2 The forgings shall be free of injurious imperfections as
defined below and shall have a workmanlike finish. At the
discretion of the inspector representing the parchaser, finished
forgings shall be subject to rejection if surface imperfections
acceptable under 8.2 are not scattered but appear over a large
area in excess of what is considered a workmanlike finish.
8.3 Depth of Injurious Imperfections—Selected typical
linear surface imperfections shall be explored for depth. When
the depth encroaches on the minimum wall thickness of the
finished forging. such impertections shall be considered
injurious.
84 Machining o Grinding Imperfections Not Classified as
Injurions—Surface imperfections not classified as injurious
shall be teated as follows: jp A 350/a 350M
8.4.1 Forgings showing seams, laps, tears, or slivers not
deeper than 5 % of the nominal wall thickness or ‘ie in. (1.6
mim}, whichever is less, need not have these imperfections
removed. IF the imperfections require removal, they shall be
removed by machining or grinding
84.2 Mechanical marks or abrasions and pits shall be
acceptable without grinding or machining provided the depth
‘does not exceed the limitations set forth in 8.2 and is not deeper
than Yie in. [1.6 mm}. Ifsuch imperfections are deeper than “ie
in, [1.6 mm}, but do not encroach on the minimum wall
thickness of the forging, they shall be removed by grinding to
sound metal
8.4.3 When imperfections have been removed by grinding
or machining, the outside dimension at the point of grinding or
‘muchining will be reduced by the amount removed. Should it
be impracticable to secure a direct measurement of wall
thickness at the point of grinding, or at imperfections ot
required to be removed, the thickness shall be determined by
deducting the amount removed by grinding. from the nominal
finished wall thickness of the forging. The remainder shall not
be fess than the minimum specified or required wall thickness.
9. Retests
9.1 IF any test specimen shows flaws or defective
machining, it may be discarded and another specimen
substituted
10, Rework and Retreatment
10.1 If the results of the mechanical tests do not conform to
the requirements specified, the manufacturer may reheat treat
the forgings represented, and shall retest to the applicable
requirements
10.2 Individually tested forgings meeting all requirements
shall be acceptable
103 Repair by Welding—Weld repairs shall be permitted
(sce Supplementary Requirements $10) at the discretion of the
manufacturer with the following limitations and requirements:
40.3.1 Repair by welding shall be made using welding
procedures and welders qualified in accordance with ASME
Section IX of the Code.? The weld procedure qualification test
shall also include impact tests of the weld metal and heat-
affected zone. All impact test specimens shall have the
longitudinal axis transverse to the weld and the base of the
notch normal to the weld surface. Wed specimens shall have
the notch in weld metal and heat-affected zone specimens shall
have the notch in the heat-alfected zone. The specimens shall
be as large as permitted by the weldment thickness. Where
full-size specimens can be obtained and where there is
sufficient weldment thickness, the weld specimen shall be
taken with one side of the specimen within “ie in. [1.6 men} of
the weld surface. Heat-affected zone impact test specimens
shall be taken at the same depth and locations applicable to the
forging in 6.1.3.1 and 6.1.3.2. When forgings are thermally
treated after repair welding, the weld procedure test plate shall
bbe subjected to the same thermal treatment. The mechanical
properties of the weld procedure qualification test shall
conform to Section 6.
10.3.2 Defects shall be completely removed by chipping or
‘grinding (o sound metal as verified by magnetic particle, or
liquid penetrant inspection prior to welding
10.3.3 For Grade LFI forgings, and LP2 forgings that are to
be only stress-relieved after repair welding, the weld metal
shall be deposited using carbon steel electrodes E7015,
E7016, or E 7018, complying with AWS A 5.1. For Grade LF2
forgings in ll other conditions of post-weld heat teeatment, the
‘weld metal shall be deposited using low-alloy steel electrodes
E701S-Al; E TO16-Al, or E7018-Al complying with AWS
for Grade LE3 forgings the weld metal shall be deposited
using low-alloy steel electrodes £ 8016-C2 or E8018-C2
complying with AWS A 5.5; for Grades LF5, LP9. and LF787
forgings, the weld metal shall be deposited using low-alloy
steel electrodes E 8016-C1 or E 8018-C complying with AWS,
ASS, For Grade LFS, the electrodes shall be low-hydrogen,
E-XX15, E-XX16, or E-XXI8 complying with AWS A.5.1 of
ASS, as applicable.
1034 After repair welding, the area welded shall be
completely free of defects as verified by magnetic particle or
liquid penetrant inspection.
10.3.5 Forgings repair welded in the normalized,
normalized and tempered, or the quenched and tempered
‘conditions shall be siress-relieved after repair welding at
1100°F {590°C} minimum, but not higher than the temperature
previously used for tempering the base metal of the same
forging, or shall be rebeat treated in accordance with 44
10.3.6 When the purchaser specifies Supplementary
Requirement SS, the same requirements shall apply to the weld
procedure qualification tests
10.3.7 Repair by welding shall not exceed 10% of the
surface area of the forging or 3314 % of the wall thickness of
the finished forging, or 5% in, [9.5 mm}, whichever is less,
‘without prior approval of the purchaser.
10.3.8 When approval of the purchaser is obtained, the
limitations set forth in 10.3.7 may be exceeded, bur all other
requirements of 10.3 shall apply.
11. Inspection
11.1 The manufacturer shall afford the purchaser's inspector
all reasonable facilities necessary to satisfy him that the
‘material is being furnished in accordance with the purchase
order. Inspection by the purchaser shall not interfere
‘unnecessarily with the manufacturer's operations. AIl tests and
inspections shall be made at the place of manufacture, unless
otherwise agreed, except for product analysis (see 5.2)
12, Rejection and Rehearing
12.1 Bach forging that develops injurious defects during
shop working or application shall be rejected and the
manufacturer notified.
12.2 Samples representing material rejected by the
purchaser shall be preserved until disposition of the claim has
been agreed to between the manufacturer and the purchaser.
13, Certification
13,1 For forgings made to specified dimensions when
agreed to by the purchaser, and for forgings made to
dimensional standards, application of identification marks as
required in Section 14 shall be the certification thatthe forgings
hhave been furnished in accordance with the requirements of
this specification, (A 350/A 350M
13.2 When test reports are required, they shall include
certification that all requirements of this specification have
bbeen met, and shall be traccable to the forging represented. The
specification designation included on test reports shall include
year of issue and revision lever, if any. The manufacturer shall
provide the following where applicable:
13.2.1 Type heat treatment, Section 4,
13.2.2 Chemical analysis results, Section 5 (Fable 1),
13.23 Product analysis results, 5.2 (Iable 1 and Table 2),
24 Tensile property results, Section 6 (Table 3) report
the yield strength and ultimate strength, in ksi [MPa],
elongation and reduction in area, in percent,
13.25 Impact test results, 6.2 (Table 4, Table 5, Table 6, and
Table 7),
13.26 Hardness results, 6.3.1,
13.27 Any supplementary testing required by the purchase
‘onder, and
13.28 If repaired by welding, 14.1.2, letter W is to follow
the ASTM designation
14, Product Marking
14.1 Identification marks consisting of the ASTM
specification number grade and class, manufacturer's name
(Note 2) or symbol, the heat number or manufacturer's heat
identification, size, and service rating, if applicable, shall be
permznently placed on each forging in a position that will not
aifect the usefulness of the forging. The specification aumber
marked on the forgings need not inciude specification year of
issue and revision letter, The Standard Marking System of
Valves, Fittings, Flanges, and Unions (SP25) of the
Manufacturer's Standardization Society of the Valve and
Fittings Industry may be followed except the word “steel” shall
not be substituted for the ASTM designation,
Nore 2-Por purposes of idemitication marking, the manufacturer is
ooridered the omanization that certies the piping component was
‘mapafatred, supe and este in soordance wit his spcietion
an the rsulis have been determined To meet Ihe reqaement of this
Speen
14.11 Ifthe forgings have been quenched and tempered or