Materials Examinatidnm and evaluations 0f the various aircraft metala aygtems feund in bh YAlel Ilwl and pieces of another Ml ul hava not anxy canfirmad eatima a made prior t0 the Karean police action but have added appreciably tq l re 8f intalligence information elicited from mther Sources In the fi ld 0f high temperature alloys ARES predictions of 19h8 nd 19h9 were confimna Wham the British Nimonic systems were found However after metallographie examinations had been completed3-it wag affirmed that th@ Soviet urbine bucket-material Nimonic 80A 13 augerior 0 that made in bath the U S and UKs which praved that he Sovieta had been aunceasful not only in thecry but practice aa walla Gther matarials found in high temperature applicationa revealed he metallurgiata of the USSR be be theroughly capable of' ev loping suitabla allay containing critical materials The turbing rotor iaa far example in the R wh engine cantained 66 percent 1333 cnlumbium and 25 percant 133m nickal than tha conventional allay in the Britimh ene and angina made by Yat areep and stwaas rupture tests showad the Sowiet alloy to be superinr to its UK and U S co mterm part q The aluminiza law aarhan ataal foun in the outer combustion of Saviet jet anginaa was prcaf enmugh t0 the jet angina industry t at many thou$an s 9f paunds of chramium and nickel cauld he saved yearxyg This step has now been implamantad QEhar examples such as a ferritic turbine rater disc fauna in ne the nae of 321 stainles steel 0f HR arawn shrouq have painted tha may ta p03 gible conservation of ar tical matariala in the U S i In the fiel 6f high ratim metals th croman il stael Samplas ramaved Eran all the airframes and reciprocating a gine -re ceiVEd pr ved hat the Eoviets have developed a principal aircraftustael 6f their own Thi3 campositimn named after its alleying canstituant aamtaims appraximately 1 percent chromium 1 percent manganesa per ent silicon and appruximataly 0 30 carbon 1 2 h 1 8 peraants nickel a d 001 baron are addad when critical part3 egg the main wing spar ofithe landing gearg etc are made of this staela Gaptured aircraft hag made possiblm a camplata atmdy uf thia steel which compares favmrably wi h quality steal uaed in USAF aircraft a m The Saviet aluminum allays have baan capied fram U S compositions naarly all of whimh including 758 hava bean faund while magneaium has beam found in wnly one critical application the landing wheel of the Laboratory eXQminationa of all the light metals used in critical area$ reveal swund matallurgiaal and fabriaation practices equal to and in places $uperior to those in the U S Thig was found to be the case in bath wrought a d cagt '2 Authority 3 HUMBZ- 315333 a parts whereass in 3365 critical applications evidence of poor heat traating inferiar midi-Jags cast- 11 mg and forging were found pm wing that the more skilled labmrez s arm not utilimd in the mazm actu'm of parts not having a significant Waring an perfamancm The most appreciabla lag in this manna-c lm 1133 in the field heat-utwmting where Saviat practice in mama-aroma inaa'bmme3539 hm mt shown application of tl-leary contained in the ovisa'b overt matallurgieal 1 1 tum One 0f the most significant products ha elicited the emuim a ian 3 the Bill of Mag-tarialsa caveringg the airframe mm a'hudy has been ma a t0 fulfill the mad for basic data that harm been utilized ta establish We fallmwing facts relative to the air-a Emma 1 Materials applicatiam including the weightg of each type of gmeatala ay' smm st- 26213 zaluminum magmasium am by caz nposition and commudity @form via i csrgimgg-g eagti gm axt-msiong shame ham and wire precinct 138 139 315mm avisat matallumical taehnolaw and ma uf acturmg mieishodg employeda 30 Dee bexfminatirm if this set-339% of materials Imam whieh being Gama- ned atria 112 th quamtimmve aw-wattle mount 03 raw stock 45 6 build am melfimtmt can be a'ba'bi tically empluy ed by other 1211363 111 3631106 and ylannimg to as 1th the Sm'vim materiexlss and inning trial we quiremen t5 nemmaary 1m Slipp r' 1 the USSR 3831- airframe agrant Gamparimn 0f the fiwiert mamriala name has revealed a 1 11 11th of inWrea ting i bem Fur the ratio Cif steel tn alwainwn permrf ageg in mm i i ml zairfr mae 313 0 90 as compared 0 333 in 'bhea 0911 in Ethe @8613 $211163 Oa l in lm $811 13 which in iwma Soviet prwference to use as much meal as 1305 311 3163 whammy Un t practice tandss to minimize-2 the um of S'bQGla I a result if metallurgiwl of aircraft and coiruw pom-Brains- 33mm Kama- g the Me ballur gy Group has been able to confirm pm 'iows astima tes as wall at acqzxim new knowledge w 'the sta ous of of aircraft metallm'gy in the Fu bmt ee pmblema such as 62 9mm ting the Same metallurgical capability i n manufacvhum anti ampport glgiided miagilcasg and othezx' typas air waapana can now be undertaken with a fair degrae of unfidenae DECLASSUNED Im liig mem gmima aafg mr mg Egthm a p mwa @f haw w ra in Khmea aring ha Khraan pal$e acting was hm fir t yaai maight in a avie$ aircraf g gaging am yw ma ign mathw m ha lavex m in matwiml ta hmalmgy wt mi a $3'thw l al ra mna ruetian f't m MIG airframa @wm matimm ling a ne tmtal flemr araa availahma in hg 353% far ircr ft -Exmminati9n 6f yMyHimal hg hm @39 mgti aan irming yrwviwum a ima aaz amyha i Elaa a an fama imm l qu lity aa a rmaulm a awaaia ahart ga 1a gkiil an maahima' amlas ha mammi eramimn gimam a in uatrial wmh lmgy am fmmili iaa auwing- a ign ana proauc ian yianmiag-af miwewa s ha-a tamgb ta a am mr ima wi h raa r ta 3f aixara yyma iaggma m %ian matariala a aangtructinm a ymatuxa a a ia wm xmmaaka amah a3 aun ry ana fargm cagaaitW an ha waia iW$iy g a aw mamb m a mmaw wmra raguirm hy tag Saviema $3 in tka- w a i iamml samglaa a mvia aiw ramaa far ILml g am i a Mm$ l g 1m th a ave cmnuxm iams Remai t f raaiywacmmimg mm J t yyaag gram Kbram g alga a yia ura a mvim axrcraft gn n rm um imn mw hm pwmm iaa n ha ka ia ba hl naak u fmunary awg amai imn mm% g u a prga ymiu r ammaluaiwm that harw wag ma lag in tha avia ginw a th ag in fi l @f $mv$ t yr e aiam yrmau tiam gawk a in rumanms an ma aip m xwm Kmraa agaiate mmtawially in rmun mng au ne mvawall gim ura m mva t airaraf gvmaumtian teahmnlagy the umif rm appliaa iwu m ag $mviw% yri miylm a nvga ing mamyawer ama maahana wmi av ilakla e h%aim raturn in air wawgmm ne yala ivwly ayt bilmty a 30V$ t air yaf in ng ry al h ugh lagging in m rtaim km get aroun vm mm%iam $r 1am$ am m rg uaa yrm ua 6f a aqyame qgali y a ig high wa$a m @ra u iwm 5 I Am a rw ml a amalyming the phy iaal itema fram Kbrea indust ial mag mmaw a g i aw aal haw thay cam nuw ayprmaah he maxt @u a ian with $ama a mm auul Savi tg wi h thei lava a eahnmla y yra uaa a sa iaf tary 1 i DECLASSIFIED Authoritym 9 In'b0lligg0n00 505 000 5 0 0015500 5511515302 0005 555 10 05 10 5552100212210 T210 20005 05 222215155022125 011012 515 0 53 00051-111001 5 11011522000 on ru'bhm' 030 5 1351005510 202555005010 53521 001520 0115-5 053 5502021 001210 from 51510 0011502200 5551555515 552352512 5515555559 0005 YAle 2251502055 0020 0155050250 in K0200 but 5212050 0025 500 0211 37 510 0031 55 5 53 15100115230000 205 5100 E x'mm 05 505 15 01 mumple'm pre 535 013 0127 0050521065 T510 00213 00 001210 03 0130 00000255 0 52 53005 05 mrkmanship h0r0'oafor0 55 1002 5505' L0 5'30 0000300 5 1 2 51225102002 '01 0550 1d02'00 5505353032 and 133 212 2050 212215530 5 20 5 50 0 aircraft 05 15 05 0020 0250125000 that 0510 5501110530 were 001322030 0f 20% quail- 5302 warlmzanship 125 200 15 1502- really 11000000235 in 01 5 5 5 00 5 0232115005350002 Th0 553355555515 5 5 1200 21250 0 22000 1 an2310 of this Th0'y am good 05 00 5512-100 02 220005 2110502003 0 025 523115 355 5'0 05000 up 0011 under hard swv -Lm 002105 551012 05 01051002215 5553522 05 50 0051 005 50 210 2000 20 002' 1586 5 25 2500 0f 2 550515102552205 20100500 1102520 552705 5 th 5555 0551'3 00 5 2000 530 0300-55 5 13 50 55210022300 05' 53 510230 25122555521010 available in 52510 55011205 Th0 0005 05 5505 00 5020 0505 102 5 322300 01 2115 5002 and 2330051250 2101212020 to 0510520 available in 13130 55 8 wilt 51 00 02 001 25 100 05 5 51000 very 20000012 1000102100 in 53515 0 55 3 00 001113110000 12020 011 0 0025 05 1110 M25100 0 5 P05215502 022115 211 21 555 50 05 25022 r535 330 13% 22515 05 2 102% 0232 151 100 and prewiously 2 00 20 50 00 3 512525211105112 005150 00 2112 057 1000 00005 5 10 51525 23 000055255 5005151550025 10520115220000 2205 22 00 5 12 02 55525 0 55511255535 was 0' 5 2000 3 005 at 5 510 80115 05 305 05 202'0555250 15522100002200 2512055012 and 22100Li0 005 025 0322 1510 5301110 '20 00210025 L0 0001102120500 01 5 110 030 05 001 2 005 2 02' 5100 15051510 52212520- '5 150'00225100't LL10 maraft where 5 31 5 5 8 1010051500 02 many 02 001500 02322010210520 5 522 00 0 20 15000 25520 550125 000 2 10 515 15 500150 005 00 021 00 to 00350 tempera Laurel 2320230255000 053' 12-00002 T510 5 202110 25 0 b 1500 0i 1 310053100 5510 513220 is 112' 005 for 015 12 23 00 000 02 00 1 02 000K053 05 0 5 55 100 222 151 2100 5 223 0 0 5302705103 5 0055 5000 05 10 5501 5205 1350 25 05202203 5251215 22 0025222 5 aircraft 0 0005 55022000000 50 5 00m 5531122 2210235050 and 2 121252501210212 5255 0 211515 5'02 230 5 15 00 20 made 300% 220005 021002251 5 30 3 2505 the 0221300 5505 5 11 550 053 the 05 201050 30-000 00255050005552 2100 2000020152123 150m 0000 in 015150 001 parts and 2 200 00555 1200 231051021503 00250 120015 in 10 532 2225 05 00 2202510 5 Th0 0 255112152530150 501' 15525005102055 and 13150011005213 05 015 25 512 aircraft 215 50 5153 05 5 5 will 023022 0520 01 55255001th 005 0 53 01 05 51000 01 10 0551215 55110 3511050222 parts will 0000150 00210350020010 3 3 any 2 1250 5                     National Security Archive    Suite 701  Gelman Library  The George Washington University    2130 H Street  NW  Washington  D C  20037    Phone  202 994‐7000  Fax  202 994‐7005  nsarchiv@gwu edu