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MI& P-76c15 Jum 1661SUPERSEDINGMWP-76BIs AUgU8t !Wsa
u’)
6CklTARY SPECIPICAY=I$
P-IC ROW AND TUBES, T%E~~, LAMINATBD
‘fMs epecfficatkm has been apprOvod by * IkparUMM of XXfenne wtd M mand8tory for ase by the *-partme~ of the timy, the !Wy, and the Air Force.
1. 8COm
1.1 .- IM8 8pcifk8Mon -rs the bsic%S%Charwte ● required of Wnil-od tlnrmoeettx
rod68xit8abs, andthem--8uu8db*kaatMaAory determi*iOn= Rds ad tubs ma-- fr’mm●- Stook, 8M otlmr--rmM rodand tutm, are Iu)t *valwd by this SpQcukuon.
l.a 9- tfiatioao - The lam$natd thermo-Wtt4tiS@~sMlkHM intbebhwtng form8 and -, ~ p~@d(~6c ~=):
Form R - RO(k, Umbd.FOrM Tr - Tttben, mlbd.m?m ?m . ~, mo--~ PBE - ?M=-h, -~l~-=s~=lype PBG - Papr-tUe, @Deldic-rmn.~ PBM - ~r”tue, J#&!mlAc-resin,
(form Tr CdY).m = - Cdtmt-fabrk_, phedic-
TypD m - Cottoa-fhbric”m, phedk-mi8 (forms T d R ody).
~ m - C@to@!i-fabric-dBe,pheldc-mata @omuTr dy)c
Type C?MG- G18s@-f8bric-h8e, melamMe-resln (iorxns Tr - R o~Y).
2. APPL4CABU DOCUMEm
2.1 TIM fouowq qmcifications - s~de,of?b isaa tneffoct ondsh of iavitstion for bids,farmaput oftFlisape@~b theextmt6pec-m b-k
BPBCMCATKkN
mDBRAL&P”a8 - ~4_yT*--*
~.lu#~5& “ ~, FMd&I@G~
PPPJM61 : Bln18s: FM-, w-
PPP-&ml - ~, we C** my-Wod.
PPP-B-621 - EkmM, wood, ki81kd ad&xk-Cora@r.
PPP-w6S6 - Ebxec, Piber.PPP-B476 - Bmea, &t-U~, Pafmboard.PPP-T-66 - ~; Pre8m8re-se19ttive Ad-
b8iwc, Waterproof-for-W utfiam~.
PPP”T-76 - ‘m% proamAro-8ewve Ad-hmfm, Pa#mr, water ReoiU-tad (I%Wc8rto8 SdU@.
PPP-T-U7 - ‘hpe, Pree8ure-&nsitive Ad-haaiwe, lFu8meti reinforced.
XIIJTARYmLP-!18 - Pre*rntMm, Metbds of.M& Eklw= --8: wam-cM9tad,
VeMr, Paper Ovwr#aAd.Mr&bma - MSma, c-, Webrp’af
STANDAED6
MSUTARYUxL-mm 105- &mplmg Proce&me 81M
Tables for Xnspoctioa byAt&t-s.
Mt&s’mb129-~for~*ad-*,
(C@e9 of Cpecukatfom, ~, -W,
5x&~*, * ~ b ~~-pmcurmm#dfhIwtudml’db~ fm thc pmc~ utivtty o? - -edbytha ~~ offk8r. )
.%s2Hs==A~~$=-=.qwcffied Mr8iw Urbm ~ iadkab4 themmwiuaf!fwx fm4bt8d hlvfi8kbafor bid98&l18p-@Y*
OF~ C~A’fWN CCMUMT=UmfoR= m Ch9$fkti iMm8.
(*licatbn”for copies dtouid be uUressd to *OU’ktd Ctiif~ Committee, 1 Park A=me at9&da*, IWWY- 16, FL Y.)
AamRIRIyf~fY’FoR mrf’nm MA’rERIAM~ mmambm of
Rtg9d mbm Mod for mecmoal fn-
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chickrmss greater thm me half Inch or -a with ●
cfhtneter greater then 1 tach m8Y *OW CfWCka orcriscke between the 18m4n8uau m machined oreewed -es. E@ee, drWed holes, arid uwtdned,mllkd, or groud face8 of bmtnattd rod8 uuf *S●Ml be ~ end Ml present ● neat 8ppeamnce.
3.1.5 w+%
The nrp of m8tertd fumbhedtntbe rodor form, ee delivered, ehd) not ex-CdtbO ~ (~ 4,6.7):
3.s.1 Luu&&. -
3.8.1.2.1 - ~ spectfted (eee 6.2),mdslb9Mbe CuttohwthtiubtoJer8aoe@ shwn f9 -8 IV.
S.S.2 fXtsmdsr8@X~ . .
w ’ .;
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m w--.-
I — -- —1
V*n 1 a“ 1 -
-LiJ-J= 1-
s
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i
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sownill table V’lJ●ha apldy.
S. S. 2 2.2 Tolerm- oa di-@t@rs and wmtlthkkne-es of tubes -
I I
Rod Ael@ Dt8meter
I [‘Tito 1-1 S/16 7
2t04imobe1
incbee, inchwhe ilxhwwe
Inches [ InchOtole~. tham3 0.010 0.o’1o3toloeethan6 .010 .0156tol~tla8m12 .015 .02012 WldW’= . 0s 1/22
V’ Bb8mue dtllmAom in ec~ wtm AmMD-741 .
Chtdth ~awter d tdme‘i%& length ,
1 1
Yy
=-T-T
.
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IIII
&
.
}
F
.
●
1% Iri7
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MIL-P-79C
4.3 thmpu ~ for ilmpectiow -
4. 3.1 Lot. - FG impwtion prpoees, ● id shallCOIMw Ofiziii th8raba@ti~ plaetic matertdddcb ia of the same form, type, rsa@@d size (a8covered in table X, ad ba - WMChme@w .‘-o- or both d the folbwtw condttie, as agreedon between the lamimtor md the Govermmwti.
b) ~mti b w ~me period dtbenotto~--”
04 Offered for tMtVWY at tbe @auMttme.
‘TU1O VU - ToAer~ 08 dh!n8@- d mohbdmch.
?bmtmi *meter,.. —“
Incb8
I Nomhal diameters
Rd&d Olq
4- 1/8 to 12, iJIChWiVG
huh
0.005-
0.003
.W4
.Om
.010
.090
.040
.Om
Built-upmandrel?
-.---
-.----c..-
-----
. 02s
0.020. 02s.O@
Y
I
“-. .
8
—-.—-.. - - .-
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I - a I -~
Inl%ls:’::”lo “ “ ‘rIllI 1
IllEl I I 1%~1 ‘:’; ;lY-.LL
IIa
EInl
HI
i Is ---——0 . . —.
I
i 0 bto”
MIL-P-7SC
‘w “,
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~.p.79c
Wle% - fwweof~~-for~ ~X@~”—-— - —- T
Rods Upto and tnchdtng 1 tnch dhxnete rOver 1 inch diameter.
! 1/8 up to butnot tnchdhg 1/2 inch ID:] /32 Up to but nd tdlld!~1/1 6 inch wall thlckatess
I1/16 up to but not including
,~~z ::: %~y~i’’”’s”
i 1/32 Up to but not tnciudtng~Ued tubes 1/16 tncb wdi thickness
1/16 Up m S8bd i~hdt~ 1/4tnch wall tMckne8sOver 1/4 up to 8nd tEJClllX1 Irich wall thtckness
I0ver2uptosnd U3chbdM8bc@~:
1/16 Up to and indudtnff t/~1 inch waAl thickness
Over 1 /4 inch wall thickness
{
1/16 up tO ad tncbdtnfJ 1/8 tnchhfolded tubes wall thiclmess
Over Y/6 tnch wall thickness——-- —.4. 3.2 SamPlms for exambmtkm. - A samp!e of
rods or tubes shail be selected at ramiom from each Mof material off e red for examination of vmsal and cti-I cnsiona) character sttcs. with lot acceptance tmsedor, he fol lowlng sampling inspection requirementsshown m table XI in accordance with Standard MIL-5TD-105:
Table XI - SampIing for examination,AQL (approx. ) = i. 5 percent delectfve.
r———I 15 and under 10 0~ j6t~40 15 0‘ 41tollo111 to 300 * 35 ?
301 to 500 I wsol to 600801 to 13001301 and over
r4, 3.3 Sampling for acceptance teDtS. - ~ t~ 1~
consists of 100 or less lengths ~f rods or tubes,thenumber of samplea shall consist of 10 percent of tbeIot, butin no case less than one or more than ●-lengths. U the lot consists of 10! or more ht@ts drods or tubes thenurnhe- of sampks 8MI be 8sshown in tabie xll.
4.4 !nspectlon. -4. 4.1 Exatnirmtion. - &ach of the sample mds or
tubes selected lxJaccordance with table ~ shall be
examtned to verify compliance with the requirementsof this spectftcatbn. Any rod or tube in the sample %containing one or more defects shall be rejected,●nd if the number of defective mxte or tubeo in anyeample exceeds the acceptance number for thatsam -pie, ‘the lot represented by the ●ample shall be re -jetted.
TabSa XI - $ampli~ for acce@ance tests.
I Number d iengt.ha in lot
.101 to 180, inclusive181 to 300, hchuhe301 to S00, inchas$vesol to 1, W?O,Inchdvw
1, 301 or more
Number ofsamplehg’ths
‘4s7101s
4.4.2 AcC8@X nce tests, - The samples selectedin accordance with 4. 3.3 shatl be subjected to ac-ceptance tests. The number of specirneno gnsrsam-ple to be tested and the numbe~ of tests per specimen
shall be as specified in tables 1 to Ill, inclusive. Ifthe lot contains five or less standnrd lengths oftubes cr rods, only water absorption and specific:ravfty tests need be conducted. Many of the sam-#es tested fails any of these tests, the lot shall bereject ed.
4.5 coA’ttkMItSUL.“
4. 5.1 Nomenclatgq - The foliowhqg lettereshall be usec! to indicate the respective general con-d!t:oning procwchlres:
Condition A - As receive~ no Dpectal con-dftkmt~.
Condition D - Immersion condittont~ in dts-tilhciw8ter on samples asreceived.
Condition E - Tempera@re eonditloti~ in anoven on samples as recei veal.
NOTE: Whenever a condtttontq letter ts fo))medby ●n tnfertor 1, as ~, ● prtor temperature con-dttiont~ baa been carrted out.
4.5.2 Demftm tion. - CondMoniq proce~=sshall be designated as iollmu:
(a) A ca@- M’ter indicati~ tb general con-dition of the specimen, i. e., 8s rweimttm~rsio~ and temperamre cotiti-~.
(b) A rru!nkMrMdcattIw in hours the chmationof the conditioning.
(c) A number Micating in degrees centi~~t& condtt ~oti~ temperature.
‘w’)
1(I
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0 ..-
MfL-P-79C
The numbers shall be separated from each other byslant UUrkB, and from the capital letter by a hyphen.
4,5.3 Ttrne tolerance. - &en conditionl~ shellbe followed by cooli~ to room temperature (2S”c. )in a dmiccator, and immersion conditioning shall befolkmmd by cooli~ to mom temperature in distilledwater, as spectffed h table XXII.
*4, 5.4 Temperature tolerances. - The condition-
lK tem~rature tolerances shall be as fOlkws:
Nominal temperature, Tolerance @degrees c. degrees c.
29 235 150 2105 2
4.6 Test methods. -
4.6.1 Mee8ureme*. - Speclmefw shall be ex-amined, and climeneiom required to be recordedshall be measured to the neareat O.001 tnch by usi~a suitable micrometer or vernier caliper. AN otherdlmeneione shall be rneaeured to the nearest one-thirty-second inch. Such measurements droll bemad+ before conditioning in each case and after com-pletion of the teat wherever required
4, 6, 2 Waaer absor@ion. -
4.6.2,1 Specimena. -
4.6.2, 1.1 fbde. - The test speclmeri for rodsshall be ) inch inle~h for rods 1 inch in diameteror under, and one-half inch in length for larger di-ameter rods. The diameter of the specimen shallbe the diameter of the fintshed rod.
4=6*2*2 ~- Ilte Bpecimerba shall bewtgMf hdtwhmlly ●id then 8ubjected to 105 L 2’C.for ] hmr (-0+6 minutes), cooiecf in a desiccatorfor at least 2 hours, ●nd reweighed [WI ). The spec-imens shall then be immersed in distilied water for24 hcmrs (-0+1/2 tmur) ●t 22 + 2°C. They shall beremoved tndtvidmlly as ntm@ ●ll surfaces wipedoff wtth a ~ cM, end then reweighed (W2). Thetest shall begtn t@ more than 1 minute after re-moval of the spcimens from the water ●nd shall becompkted ae raptdly es comtetent w!th ●ccuracy.NOcorrection shall be made for water-soluble matter
‘hMe XIII - CondMi* ti m e tderanc.w.
CondittontmCommente
Condition Time Time ?’lmetolerance tolerance
D-48/50 -O hours 1 hour -O hours Cool by Mmersion in a suffi -D-24/23 +1/2 hour *Z hams Ckllt quenttq d dMilAed
watu to r-cc the tempera-tureto 22°C. within 1 km.Remove Wvtfklly as~ a8bdwipe surfacenteroiftithati. 8tartte8t** 1 mtsmte a$terrem- Ispedcnen fromvater.
I?-1/los 4 mknUto8 sIwm’a ~- &e ntet-atmorpthm test+6 **C8 or- (4. 6.s)
D~-a4/23 -0 hrs ------- ------- ~ ~-~ t-+21mu8 .*
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PercerB~e of water akmrpttort in 24 hours =
‘+ x 100
4.6. S JXelectr]c stremrt h perpendicular to lam-inations (short -time). - Tlte ~electric strengthoermendi“Cuiar to lamiruktions shall be determined“~& ShOrt-time te6t S~Cifbd h rfMthOd 4031 Of
Specification L-P-*6, USLU specimens 12 inchesIoqg. 7%s tests shall be - waler oil at a fre-quency not exceetim 100 cychs per second. T%evolt age in the short-time test shall be increased,uniformly at the rate of 500 volts per second. Thetest electroc@ shall be as specified in table XW.
Iktde W - Ebctro&s.Other
electrode I{
7‘Mef~ foi
i
I
;Greater than 1.5 I
tube.Mercury or metal foii Metal foiij t
The electrodes ~~al] & o! :M same le~h, accurately
centered w]th respecf TP tne specxmer.. A very thincoating oi pet rolatum shaii tw used = an adhesiv~ forfoil electrodes A c Cwk Oi WiX pbg Shaii b used tShold the nv?rcur~f In t},c tube
4. 6.4 Compressive st rengt h (axiai~ - Theamal compressive st re~ h shall k detemmed bymethod 1021 of Sfxw~ica~ion L- P-406, except thatthe speckmen length shall b- a s shown in Uble ~.
Tabk XV - Spec]m?n lengths forccmpressiw s[rength tectf.
[Outside dameter of tube or rodj Le:@ UI sptrirne~F .— --lXnChes i Lnchcs ,41 :
‘Rods1
I I
1/8:0 1,’4, inclusive 1;2 ;Above 1,/4 to 1/2, inclusive I 3 !
IA t m W1I’2tO 1, iM&J6iVe z
Ahve J to 2, inchmive i
!
4 ITubes: II Up to 2. inclusive 1
..-.—- . ————-
4. 6.5 FIexurai strer@h {- on’yl. -
4. 6.5.1 Specmens. - The testspesimen shallhave a diameter qua] to tlw chame?er of the rodad a span-depth ratio of eight to one SW tMcsed.
For rods over one-half inch in daimetcr, epeciznamdull be machtnsd to a dtarneter of one-haM inch and●pecimAs s inches l= ShaLl * cut.
4.6.5.2 APPar8tuS. - Any ●Wd testinu ma-chine may be used pttmi- it is accurate to *tMr.1 percent for the lowest Load for which it is used.The specimen shall be tested as a simple beamloaded at the center. me aupfxww shall have cowtact edges rounded to a radius of one-eight tnch.The distance be~een supports a!!l be eight timesthe dtameter of the rod. Where neoessary, theJoad shall be applied thr~h a steel block haviqf asemicircuk contact ~e of the same radius as therod with edges rounded to a radius of one-eighthIrich. The cross-head speed of the testbg machz=shall be such that the bad can be accurately weighed,tit shti not exceed O.OSCinch per minute when themachine is runnutg idle.
4.6. S. 3 Proce&re. - Specimens shali bemeasured to the nearest O.00 Unck, insertd intethe machk and broken.
4.6.5.4 Report. - ‘f%e fkxura& 0s fibe: stxest+in p.s.:. shall be calculated from the formwa”
h%ereP = The bredanfz i-c apph cd inpumdF.= The spar, or d:szwc e between sup- U)1.ports.
d = The machined dmmeter in mciw,.
4.6.7 Warpage. -—-
4.6.7.2 Proc@urc. ‘ The specimen AaU wB*8CI on th; “~ti flat surface and rd.awdqphst t!!e vertkally plane surface of the rigiti bar.TM bar shd be firmly fastened to the horiaomd~ ~,~ace. w~~~ ~~ ~d of j~~er g~es, the
tnaximum distant? betwon the tube or rck and thever’ti~y plane Burface shall k measured to then~arest O.001 inch.
‘ 4. 6.7.3 Repcmt awi calaltation. - Warp OYlad- -—of 8traighWe88 std be report~ as the m=imum
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L’
( dtstance or MY part d the tube or rod from astraight~e wtdch connects the ends of the apecl -men. The minimum kqttb teOted for Warpage shallbe 24 tncheeo me warpage W then be czlcu.lateda8 fouows:
““‘y
Where:W36 = Perc~e d warp,
to a 36-inch l-.calculated
bapecumdmremr atiatftx deltverY. -&- e9aPd flm*eIbaubeaAct# andinspected in ac~ WttbSpecinoation=-P”118 to verify oodormance to the requtremamta dSecure 5 herein.
5. PREPARATION FOR DIHJVERY
5.1 pac&Urill&,-
r“...)
5.1.1 LeveI A.- Lamtnated rods ar tubes, orparts fabrkXed therefrom, 9hall be packaged f=phymkd - ~kal protection in accordancewith method V’f of Specification MIL-P-116, eitherindividually, in tnmdka, or h cartone a8 requtrd.
Container @@ cadorm to Specification PPP-B-566, PPP-B-676, or PPP-B-626. Container clo-eureahall beaaepecifid~ti a@i-eXepecifioettoo or appendix thereto. The groes wctghtof fiber ccmt4mrs ehail not =c~ n z,~ -Miners 30 pamti.
S. 1.2 @vel C. - Laminated rode or tubes, orparta fabricated therefrom, chall be p8chged in8ccordauce with tbe 8uppbr’u commercial practice.
5.2 PackinQ -
S.2.1 Javel A.- Unba dherwhe qsedfhd,hdnsted rocb end babea, or parts =W8tedtberh, ~ ee specified (SW $. :), wbe fmcA@llt OW-t’ype? WOod-OleGf@--mw~fw, ~~wOOd-0bf4d Termer~ 9v’er~ or Wod-chtedP-_ confor~ to Spocfflc8tt~ ●PP-B-661, PpP-B-@i (ckaa 8), PPP-B-@6 (C- 3),PPP-B-585 (CtiS 3), MIL-B-102W m PPP-B-~1,r--y, at the *- d * ~c$or.~ ~r~ 8Ml kave eaadinera comform -- tO8pecfficaMon MIL-L-IOS47. Caseltners shallbe closed and eealed in ●cctmdance wtth the appen -dia to 6pecffica@on MI-L-L- 10$476caadw@rs f=Mm9aedor~ to 8pecKioatim PPP-lb_6 maybe omitted prwided 811 jofitta ad corners d thek are 9aakdwttb mirdatum 1-1/2 inchwidetapt
MIL-P-79C
conformi~ to Specification PPP- T- 76 or PPP- T-60.Boxes shall be ched ad atra~ in accordancewith the 8pplkaMe box 8pectfkatton or appedixthereto, excefl fiber -s shall be -d wtth tapaa specified h the appeadk to Spcffkation PPP-T-826. Tbe groea uetght of wed or wood-cl~atedboxes stmlt a e- WO poumdaa
5.2*2 ~wel&- Lemtrmt9d rodaandtUbea, orpar%e-W therefrow p- aa Spectfted(see 6. z), ●m be fubed in *maotfc type wod-ckated fiberbmrd, nailed wo@ wkebouad ~cleated plywood or wwxt-cleeted saaeer ~pr cwor-Md boaaa or cka 8 fSber K eadormt~ to ~-iftcm ?PP-B-501 , PPP-B-621 (Cba 1), PPP-B-S85 (dase i or 2 use), PPP-B-401, MIL-B-10~or PPP-B-626, rnlmcttvdy, 84 tbe e@ion of thec~ractor. Boxcfomrea baubease pcuiedtnebeapptte - s~ificatioo or appendtx thereto.7%e#’rOes ni#Itof w’oodor uood cleated boxes ‘ebaunoto %ceedm$nxlmb.
S.a. s ~- ~rodeuxttuim, or- $~ therefroq fmckaged as ●pecifkd(8ee 6. 2), A@ be ~ tn -iners which williuure ac~ by common earr~er and ●de&iWery U ~ination. fRip@q containers eMlcomply $0 tbe thUform Fret@t Cla88tficaUon Rulesor other ~tiona a8 amiable to the mode oftr-poatkm.
5. s -M q. - in addttion to my ●~cffic mark-ing rwuLred by * codmct or o-r or harein,interior and efierior sht~~ co~nera shall bemarbd in accorcknce with Stati MIL-=D-1 29$
6. NOTBS
6,1 lmm_uee. -
8.1,1 Foru. -
6.1.1.1 Molded rode, - Molded rab 8re i*8nAdfor 8 variety d qlpfica- mcll metaaulati~scren, bolts, ad small budhgs or •~eoro wheraelectrical et-ss k - oevere. Tha xkatertal lsnearly aa &n8e ae the com~]e grade of sheets,ad the ●lectrical properties are of approximatelythe ~ Or&r.
8*1.1=2 l!wUIMJ - RofAed tuba are i~e-dfor ap@t~ in cdl kr=, lam~q bushiqp,beuing ~, etc., *= excellent conce*rl -ctty ●nd good pby8ical and electrical charactert8tics- required.
@*l=l*s ~“ ~l-t-D-@-temkd for applic&tba in cd forma, ~ti~ beb-inga, bearing retaiaera, *., * M@er *mity,lower nbr ~m - better amewtonaf 8ta- 9Ml!ty 8re QirWL Mow *S are k9D --ee~rtcaadtitih~~ cbCtrkcd-
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MiL- P-79C
mecbnicd properties ●t me mold parti~ llIWwhen the escese rnterid hae been remowt.
6.1.2 TYP8. -
“’”2” %’?%-~ PBE #s itiended for
appl~cati~ sim ar o those for type PBG. ●xmptthat unfkr ●dverec conditio~ of temperature andhumidity PBS poeees-s high dielectric strengthand retativdy km d$ekctric loeees.
‘ “ ’ ”2”2%!!i%%tkz%iixx=:cd~ materand ●lectrbl properttOs.
●
0“’”2’3?%=--~~~~~-s=a vsrtety d ●
ties ●re eubordimte to the requti mechanical prop●rties; that is, for uee in eddy mechanical equtp-ment or for use ae meckMcaJ mem&re of daetrtcalOqolpae --• -~ matertal * rOqutmL&atwhwre theueed sh@drdtib@rSc prop-erties with a corre8gMdhU ●acrtfiee of ~calpropeztks -Id not be warradod. R w isM~ forstructural and electrical 8ppMc8tb9 where m vnote-ture is preee-. Spectd pecauttona must be t8kenif tl. * material h to be tapped or machined p’allelto the Iami-t tons wtthout cracking.
id)
(e}
([)(g){h)(i)
(j)
P~rty value roquiremelda CO?specialSlaesofrodemldtuheebaxt.s).
Tohranees on dtametero of&p GMGrolled tubee,If required (eee S. 3.2. 2.2.1●nd note 3 of table VIII).
mm~i~ requtred (see 3. 3).Fhl(sh requMed (see 3. 4).Requirements and/or drawi~s for ~rta.Levels of ~ckagtng and ~cldag required
(see s. 1 aad 5*a)*Spctd ma- reQutrutbee&s).
6.4 Croee-reference Met d deH-. - Be-cauee of ~ practicea d mral GOm~ agoo-Cks & ~, ttu Cm”rwferaneee *iatatAe XVI am provided for eQutvaAeA &stgnstmad b dn ate d mfe a ndtmtms.
Tabk XVI - ~mi&mmtn?.@am&one
ad hhm.
‘“’”2”4w - I’ype?’?mimh$!endsdmrapplkatiolm 8 m arto thoee d type Pt3c, 8xeOf@that tt pmseseea better electrical propmtiea thmghwith some sacrifice of toughness. B is saitable forfine machini~ operatiom .
“’”’”’fa%%kt%~z:?s:s=-electrica! atrtc propartto8, *m dekctrtc kea, ad st thesame ttme ● good degree d mectwkal ●tre@h,particularity ttmghaeaa.
6“1”2”’ v- -m”’~f”structural, not ● ectrtcal, application and for wewhere the ●bctrtcal proprttea twc been greatlyaubordbted to the required mechardcal properttee.
‘“’”2”’ %P- 7ype GMG b *nded for
mechanical epp Mona requir~ good reoMance toheatand tofbme mewell ae to arct~ Condttbna.
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(a) 7We, mrnber, ~titecf thte8pcificat&m.(b) Fbrm roqdred (BW L 2J.(c) Typ required (see L 2).
Custodiam:Army - sigCNavy - StupeA~r Force - ARDC
Prqlui4 actwtty:Navy - ~iJ=(Proj- 9330-M77)
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DEPARTMENT OFTHENAVY
rOFFKIAL ●U64MR=PENALTY FOR ●RIVATE USE S200 I BUSINESS REPLY MAIL I
FfRS7 CLASS ●E RMIT No. t2S02 wASM )NGTON D. CJ 4POSTAGE WILL SE PAID BY THE DEPARTMENT OF THE NAVY
1111
Commander, Naval Ship Engineer~ng CenterCode 6124, Center Building
Prince George’a CenterHyattsv~lle, MD 20782
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STANDARDIZATION DGdMENT lWROVEMENT M~L
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