Kupanga Rame B36.10 ASME B36.47

4140 Steel Bar Alloy Bar
Nickel 200 Amalongosola Nickel 200 Malawi amakhala olimba, osasunthika, ndipo amaliza bwino. Kuphatikiza apo, Astm B564 SP52200 N02200 Zisoka zakhungu zimalimbana ndi kutengera ndale komanso zotsatsa, zimapangitsa kukhala bwino kugwiritsa ntchito zida zogwirizira.

Asme B36.19M ndiye wofanana ndendende ndi mapaipi achitsulo osapanga dzimbiri, zomwe zimafotokoza kukula kwake, kulolerana, ndi zomwe amapanga maenda owala komanso osaka.

Pofuna kufafanizira mapaipi, ndikofunikira kuchotsa payipi yolunjika pa mapaipi. Mukamagwiritsa ntchito ma piipelines osiyanasiyana, mapaipi osiyanasiyana ayenera kugwiritsidwa ntchito. Pamene mapaipiwo amagwiritsidwa ntchito, chikopa chiyenera kugwiritsidwa ntchito kusintha kukula kwa mapaipi. Mukamacheza, chipika chanjira zitatu chowonekacho chimagwiritsidwa ntchito ngati cholumikizira cholumikizira, kuti chikhazikitse chipani cholumikizirana kapena kukula kwa nthawi yayitali komanso cholumikizira cholumikizira cha mapaipi. , Pakulumikizana ndi zida zosiyanasiyana, palinso zolumikizira ndi mapulagini a gawo la chida.

Kaboni mosadukiza, zomwe zimapangidwa molingana ndi Astherm A105, nthawi zambiri amagwiritsidwa ntchito popanga mapulogalamu. Izi zidapangitsa kuti zigawo zitsulo zosungunuka (kuphatikizapo zowongoka, zolimbitsa thupi, ndi mavuvu, ndi zina) zimagwiritsidwa ntchito ngati ntchito yozungulira- komanso yokwera kwambiri pakukakamizidwa.

A335 P11 chitoliro cha P11 chimakhala chitoliro chosawoneka bwino chosokera. Chubu ndi chrome molybdenum aloy. Kukhalapo kwa zinthu ziwiri izi mu saptipe chitoliro cha Sa335 P11 chimawonjezera mphamvu zake.

Zopanga zosapanga dzimbiri zopanga 316L 1.4401 s31603 chitoliro chachitsulo chosapanga chitsulo
Sch40 Monol 400 chitoliro chimasankhidwa kukhala nambala ya Werkstoff 2.4360 ndi N04400. Chipika 400 chimadziwikanso kuti Monil Anoy chitoliro cha 400, Monl 400 Pipe & Nickel Chitoliro 400.
Kutalika: Malinga ndi zomwe mukufuna. "

A234 wpb sch 80 ewbow ndi njira yomwe imasinthiratu 80. Astm A234 WPB Elibondo amathanso kukhala yolumikizidwa kapena kupangidwa; Nthawi zina amakhalanso ndi opanga.

Izi zimathandizira kuthana ndi sulufuric acid. Ilinso ndi mawu apamwamba kwambiri, kuti apititsenso kukana kwake kuti athe kugwiritsa ntchito mankhwala ndi njira zomwe zimapangidwa ndi mitsinje yolimba ndi mpweya wosungunuka.

Kuchulukitsa machubu owala kumapangidwa ndi mizere yogudubuza ya chitsulo chosapanga dzimbiri ndikuloza kutalika kwake. Pambuyo potcheretsani, msoko wabwino, kapena kuti mikanda, imatha kuyengedwa ndi kuzizira kapena kungofafanizira monga momwe ziliri.

Alloy 800 ndi a nickeum-chromiam almoy mphamvu ndi mphamvu yayikulu komanso kukana kwa oxidation ndi kutupa kwambiri. ASTM B407 SINE N08800 infoloy 800 WR. 1.4876 Chitoliro chowala bwino chimagwiritsidwa ntchito kwambiri pomanga zida zofuna kukana kuchuluka, kukana kutentha, mphamvu, komanso kukhazikika pakuchita nawo ntchito mpaka 1500 ° C).

Ictives 601 ma flanges amapangidwa ndi chithokomiro cha Neomiamu. Ma grads azomera amasiyana mosiyanasiyana ndi kuchuluka kwa mawonekedwe. Gulu la 610 ili ndi 58% Nickel, 21% Chromium, kaboni, manganese, silicon, sulufule, mkuwa ndi chitsulo mu kapangidwe kake.

Duptux 2205 Chitsulo chozungulira chili ndi 22% chromium, 3% molybdenum, ndi 5-6% nickel. Kuphatikiza pa kulimbitsa thupi kwambiri komanso mphamvu yayikulu, imakhalanso ndi kuchuluka kwakukulu, komwe kumapsinjika ndi kupsinjika.

316l 1.4401 s31603 Chipika chosapanga dzimbiri ndi njira yolimba komanso yolimba yofananira yomwe imagwiritsidwa ntchito pazosiyanasiyana za mafakitale ndi malonda. Izi s31603 chitoliro chimapangidwa kuchokera pazinthu zapamwamba za 316l osapanga dzimbiri mosapanga dzimbiri mosapanga chipongwe, oxidation ndi chomata, zomwe zimapangitsa kuti zikhale zabwino m'malo mwazinthu zovuta kapena zovuta.

Chromium yapamwamba, molybdenum ndi nayitrogeni imapangitsa kuti zikhale bwino kwambiri (zomwe zingachitike) zitsulo zokongoletsera ndi zotupa zosapanga dzimbiri, komanso kutentha kotsika kwambiri kuposa 50¡c.

Masamba awa ali ndi mphamvu zabwino kwambiri, komanso kukana kutumphuka, komanso kuwonetsanso kwambiri ponseponse ndi kutentha kwakukulu kwa kutentha. Kuphatikiza apo, ili ndi kukhazikika kwapamwamba kupirira kulumikizana ndi acid kuukira ndi kupirira pamakawawa.

Kuwala kumatha kukhala mbale yophimba kapena kutseka kumapeto kwa chitoliro. Izi zimatchedwa Flange ya wakhungu. Chifukwa chake, zojambulazo zimawonedwa ngati zigawo zamkati zomwe zimagwiritsidwa ntchito pothandizira makina.
Kuimbira 36: Opanda K93600, W.NR 1.3912

Aloy 800 wedy wedy timakhala ndi mbiri yolimba mu malonda popanga mitundu yosiyanasiyana ya mitundu yosiyanasiyana ya makasitomala athu. Timakhala ngati infolisoy ma fronges omwe ndi odalirika komanso apamwamba kwambiri. Timagwiritsa ntchito ndalama zotsogola komanso makina apamwamba popanga assowm B564 SIMIL N08800 Stuliloy ma fronges 800.

FSTEOLLOY C2000 ikupezeka mu mitundu yosiyanasiyana ndi makulidwe amtunduwu, mtundu uwu wa chromium-molybdenum aroyoy amadziwika bwino chifukwa cha mphamvu zake zazikulu komanso kukana.

N08925 Chitsulo chosapanga dzimbiri chimakhala ndi makina ochita masewera olimbitsa thupi kuchokera kumayendedwe ophulika

A789 S31803 ndi S32205 ndi zitsulo ziwiri zosapanga dzimbiri zomwe zimagwiritsidwa ntchito kwambiri pantchito zosiyanasiyana. Mapaipi awa a duplex s31803 osakhala opanda chidwi amadziwika chifukwa chokana kwambiri kuwonongeka, mphamvu zazikulu, komanso kutopa kwambiri. A789 ndi lingaliro lomwe limakwirira osawoneka bwino komanso machubu opangidwa ndi chitsulo chosapanga dzimbiri.

Chitoliro chowoneka bwino chimapangidwa kuti chijambulidwe patsamba kumapeto kwake ndikulumikizani mapaipe (s) ndikulola kusintha njira kapena kuthirira kapena kutha.

Inter 36 ® ndi chitsulo-chitsulo chotsika kwambiri chomwe chili ndi 36% Nickel, IMPARS 36 ili ndi zochulukirapo pakukula kwa kutentha kwa a Crogenic pafupifupi + 260 ° C).

ASTM A240 Mtundu 2205 Plate ndi duwa losapanga dzimbiri lomwe limagwiritsidwa ntchito kwambiri m'mafakitale, kufufuza kwamafuta ndi mafuta, ndi ukadaulo wamadzi, ndi ukadaulo wamadzi. Mapepala 2205 amapangidwa kuchokera ku kalasi ya SAGIS 2205, chitsulo chosapanga dzimbiri, chomwe chimaphatikizika ndi chitsulo champhamvu.

Incresel 718 ndi njira yosungirako nickel-yochokera kuntchito yofunikira nyonga yayikulu pakusintha kwa ma crypedes 1400 Fahrenheit.

Invalsel 718 ndi alloy-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium-chromium yomwe imagwiritsidwa ntchito kwambiri pamapulogalamu apamwamba monga Aweslospace ndi majini agalu. Chimodzi mwazinthu zofunika kwambiri pakupanga a Ism B670 Invelve 718 ndiye kuti mbale yogubuduza. Pali mitundu iwiri yayikulu ya mbale za Intery18 zomwe zilipo pamsika: kuwotcha mbale zowombera.

Zinthu zachitsulo za kaboni zimagwiritsidwa ntchito popepuka. Izi zitha kukhala ngati mawonekedwe a bar kapena mawonekedwe a ingote kuti akwaniritse zofunika zambiri. Amapereka makina okwanira komanso owoneka bwino.

Intelsel Aloy 600 Bing imapangidwa kuchokera ku maginito, nickel-chromium almoy alnoy omwe amadziwika kuti amakana maxidation. M'malo mwake, Intersel Alloy 600 (SREME N06600) idapangidwa kuti igwiritse ntchito madigiri okwanira 6000. Zikhalidwe? Alloy 600 sikuti ndizovuta, zimawumitsidwa ndikulimbikitsidwa kudzera mu ntchito yozizira.

Mfundo yoyimira pansi ndi yotereyi yopanda dziwe imakhala kutsogolo, koma mutha kusunga zambiri kumapeto - makamaka ngati malo anu apezeka kuti agwiritsidwe ntchito panja.

Astm B564 Nickel Anoy 200 \ / / / / / / / / / / / / / / / / / / / / / / / / / / / Ma Nickel 200 amakhazikika, osasunthika, komanso amaliza bwino. Kuphatikiza apo, Astm B564 SP52200 N02200 Zisoka zakhungu zimalimbana ndi kutengera ndale komanso zotsatsa, zimapangitsa kukhala bwino kugwiritsa ntchito zida zogwirizira. Ndife nickel wopanga ma nickel 200 ku China yemwe amapanga zojambulazo za kalasi yopatsidwa mu mawonekedwe ndi kukula kwake, malinga ndi momwe kasitomala amafunikira. Gulu lathu la ophunzira limayang'anira njira yopangira nickel 200 kufinya mokomera kuti atsimikizire kuti ali ndi vuto lolondola komanso labwino. Amachititsanso mayesero a Certiquition kuti awonetsetse kuti ali ndi vuto la malonda musanapereke makasitomala.

Zitsulo za alloy ndi ndodo
kaboni shael
Kuchulukitsa kwa titanium ndi pafupifupi 60% yomwe ya chitsulo chosapanga dzimbiri ndi nickel polosys, kupulumutsa thupi kumeneku kumapangitsa kuti ikhale chisankho chodziwika bwino pakugwiritsa ntchito monga Arrospace.
Kusindikiza mating ndi magalasi olimba

Ili pafupifupi chimodzimodzi ndi ai 4130 chrome-molybdenum alloy, koma ndi zomwe zidalipo kaboni pang'ono. Poyerekeza ndi Astyi \ / assoy 4130 alloy 4140 4140 chitsulo chimakhala ndi zinthu zapamwamba za kaboni, zomwe zimapereka mphamvu zapamwamba komanso kutentha kumatha.

Nilo Anoy 36, w.NR 1.3912, Inciar 36 ® ndi chitsulo chotsika kwambiri chomwe chili ndi 36% Nickel ndipo ali ndi gawo la kufalikira kwa gawo limodzi la chitsulo cha kaboni pafupifupi.
Imbani 36 K93600
www.htpipe.es
Chubu chowala
JCPIP.com
Zitsulo zomangira
Carbon Steel Bars & ndodo
Zhengzhou Huitong Mapaipel Counc CO., LTD.
Zitsulo zachitsulo
Monl 400 chitoliro cha mafelemu a magalasi magalasi
FSTEOLLOY C2000 mapaipi a ASME SB626 FOTELOLELOY C2000 Worded Bis
Duptux Stevel & Mapepala & Coils

Incoloy 926 (N08926) Alloy-Worked-Worked ili ndi 14.0-18.0% cr ndi 24.0-26.0% NI. Ndiwo vani ya nickel yomwe ili ndi Titanium ndi aluminiyamu, okhala ndi chromium yokwanira kuti apange ndikusunga chromium yokwanira ma chromium kuti muteteze kutentha kwambiri.

Iswees osawoneka bwino kwambiri a sing'anga osawoneka N06600 ndi Astm B167 ndi omwe amapangidwa kuti apirire kwambiri ndikubwera ndi chitsimikizo chachikulu.

Wosuta wosakhazikika wopanda chitsulo
Sae 304 Chitsulo chopanda dzimbiri ndiye chitsulo chosapanga dzimbiri. Zitsulo zimakhala ndi zonse ziwiri zachitsulo (pakati pa 18% ndi 20%) ndi nickel (pakati pa 8% ndi 10,5%). Ndi chitsulo chosapanga dzimbiri. Zimakhala zochepa zamagetsi komanso zomwe zimayambitsa thupi kuposa chitsuloboni. Ndi maginito, koma ochepa mphamvu kuposa chitsulo. Ili ndi chipongwe chachikulu kuposa chitsulo chokhazikika ndipo chimagwiritsidwa ntchito kwambiri chifukwa cha kupangika komwe kumapangidwira mawonekedwe osiyanasiyana. [1]

Ndife opanga, othandizira ndi otumiza kunja kwa zitsulo ASMEM A182 F5, omwe apeza gawo limodzi. Mitundu yathu ya Alloy A182 F5 Short imaphatikizapo mitundu yonse ya miyambo yachilendo komanso chizolowezi kwa ASM A182 Creations, chitsulo chimakongoletsa kutentha kwambiri.

Amapangidwa ndi chitsulo chamitundu ikuluikulu yoyendetsedwa ndi kukana kwa mphamvu. Onse a Astm A515 GRA BABE 70 Tidapanga zida zabwino kwambiri komanso ukadaulo wabwino koposa. Zitsulo zake chifukwa cha mitsempha ndi boilers zimasiyana ndi zolimba za kaboni-manganese chifukwa cha kukana kwawo kwambiri kutentha kwa kutentha (kozungulira, kutentha kapena kukwera kwamphamvu kapena kukwera).

Chitsito chopanda maziko cha 316 chakhala chinthu chofunikira kwambiri kwa gawo la mafakitale. Chitsulo ichi ndi chrome chimadziwika kuti ndikukana kwake kuvunda, komanso kukhazikika kwake. 316 Chitsulo chosapanga dzimbiri chimatha kupangidwa muzosaso komanso machubu owuma kuti akwaniritse zosowa zapadera za kasitomala.
Imbani 36 K93600
www.htpipe.es
Chubu chowala
JCPIP.com
Zitsulo zomangira
Carbon Steel Bars & ndodo
Zhengzhou Huitong Mapaipel Counc CO., LTD.
Zitsulo zachitsulo
Monl 400 chitoliro cha mafelemu a magalasi magalasi
FSTEOLLOY C2000 mapaipi a ASME SB626 FOTELOLELOY C2000 Worded Bis
Zitsulo zachitsulo & ma sheets & coils

Super duplex steple steple bolt amapezeka kutalika kwa 2mm mpaka 200mm ndipo ali ndi mphamvu yayikulu komanso yolimba kwambiri. Super Duplex S32750 ndi gawo lodziwika bwino kwambiri durtiritic, kalasi yosapanga dzimbiri yosapanga zitsulo zomwe zimagwiritsidwa ntchito popanga ma bolts.

Ictives 600 yozungulira ndi intoy-valkel-brad-cenel carburrization ndi kukana bwino kuwonongedwa kwakukulu. Zingwe zozungulira 600 zozungulira zimagwira ntchito kuyanika cl2 ndi mipweya ina yambiri yofananira ndi kutentha kwambiri. Alloy 600 bar ndi a chromial-cromiyal-cromiyal-cromiyal-chloride bwino oxidation ndi kukana ku chloride kuwonongeka kwa chloride kugwa, ukhondo wamadzi acid kumatentha.

Montel K500 chitoliro cha Bend ndi ewbow ndife nonmagnetic, ngakhale pamatenthedwe ochepa

Zimawonetsa kukana bwino kusalowerera ndale. Izi za alloy zimapanga mwa khumi ndi chimodzi, filimu yoteteza yomwe siyitalikirapo, koma imasunganso kukana kwa makutina kuposa kutentha.

304 Nphwemba zopondapondazikulu zimapangidwa ndi chitsulo chosapanga dzimbiri, zinthu wamba komanso zodziwika bwino muzogwiritsidwa ntchito zambiri zamakampani zomwe zimafunikira kukana kuwonongeka ndi oxidation. Nyansiweli iyi ya S30400 imakonzedwa pogwiritsa ntchito makina apadera ndi njira, zomwe zikuwonetsetsa kuti ndi olondola komanso odalirika.

Zitsulo zopangira zimapereka mwayi woyenera kuyeretsa, kuyeserera kapena kusintha. Nthawi zambiri amabwera motsatana koma amathanso kubwera m'magulu osiyanasiyana komanso amakona. Ma flanges amalumikizidwa wina ndi mnzake pobowola komanso wolumikizidwa ndi makina opukusa ndi kuwotcherera kapena kuluma ndipo amapangidwira kusokonekera kwamphamvu; 150lb, 300lb, 400lb, 600LB, 900LB, 1500LB ndi 2500Lb.

Crido A Que la tuberia Stabida ASTM B517 SANDO LA LA Mayoria Alcalinas quabinas algrinos ambeun.

Nickel kutengera 800 inclooy chitoliro chomwe chimadziwika kuti ndi kukana bwino kuwonongeka. Makamaka kuyankhula, chisumbulu 800 chitoliro chimapereka kukana mokwanira zotsutsana ndi ma carburization onse komanso oxidation kutukula.

Astme A453 amafotokoza kuti kutentha kwambiri kumapitilira ndi kuchuluka kofanana ndi chitsulo chosapanga dzimbiri. Chimodzi mwazomwe zimagwiritsidwa ntchito kawirikawiri ndi kalasi 660. Timatulutsa ma bolts stuget, hex ma balts, kutulutsa zingwe zowirikiza zowirira za A453 mu kalasi 660 mu kalasi ya \ / c \ / opangidwa ndi mapulogalamu apadera apadera.
Chitsulo chosapanga dzimbiri
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Zitsulo zomangira
Carbon Steel Bars & ndodo
Aleacion de niquel intuth 600 Na 13 tubus y tubeas
Zitsulo zachitsulo
Monl 400 chitoliro cha mafelemu a magalasi magalasi

ASTM B564 SI06601 Flanges Invalve 601 Malawi imapangidwa ndi Chromiam Cromium. Ma grads azomera amasiyana mosiyanasiyana ndi kuchuluka kwa mawonekedwe. Gulu la 610 ili ndi 58% Nickel, 21% Chromium, kaboni, manganese, silicon, sulufule, mkuwa ndi chitsulo mu kapangidwe kake. Pali mitundu yosiyanasiyana monga makonda otayika, khosi lotentha limakongoletsa, syveliel 601 kugwera pansi ma flanges, orifice kumangirira. Zowawa zopangidwa ndi zinthuzi ndi zolimba, zogonjetsedwa ndi ma asidi, kuchepetsa mankhwala ndi oxidation komanso ndizovuta.

Zizindikiro za Nickel-Copy-Copy 400 monol 2.4360 molunjika rod ndiyabwino kwambiri opsinjika ku chloride ku chloride movutikira mukakumana ndi zowononga m'matumbo. Monl 400 ndi a Haloy ndi Nickel omwe amadziwika masiku ano chifukwa cha ntchito yake yayitali. Alloy ali ndi kukana bwino acid ndi alkali. Kuphatikiza apo, ili ndi mphamvu zabwino zokhala ndi mphamvu, duckity, kukhala waulimi wabwino kwambiri, ndipo imatha kuumitsidwa ndi ntchito yozizira. Kuphatikiza apo, itha kugwiritsidwa ntchito poizona ndi kutentha kuyambira kuchotsera mpaka 538 digiri Celsius.

Mapaipi 254 amatha kupirira kupsinjika kwa makina opanga masewera olimbitsa thupi komanso aloy 254 osuma amagwira ntchito yopanikizika kwambiri komanso malo okhala.

Zinthu zopanda pake S31600 zimawonedwa ngati chitoliro cha Marine ndipo chimapangidwa popanda ma weds kapena seams. Kalasi imachita bwino m'matumbo osiyanasiyana am'madzi ndipo amakana kukana kuwonongeka ndi chlorides ndi nkhawa iliyonse. Mankhwala otchuka kwambiri a kalasi iyi amalepheretsa nthawi yayitali akupanga matupi amadzi. Komabe, mapaipi am'mimba ambiri amatengeka ndi madzi ofunda.

Magalasi okhazikika - omwe adayikapo sayansi-nickel-cobalt matobala, Kovar Smows, ali ndi mzere wowonjezera wowonjezera wofanana ndi galasi lolimba mkati mwa kutentha kwina

Al6xn ndi chitsulo chosapanga dzimbiri chosakhazikika ku chloride pansi, crevice kutukuka komanso kupsinjika kuwonongeka. Al6xn ndi Alloy a 6 wokhazikika womwe umapangidwa ndipo umagwiritsidwa ntchito m'malo ovuta. Ili ndi Nickel (24%), Molybdenum (6.3%), nayitrogeni ndi chromium yomwe imapangitsa kuti zisautso, chloride pansi. Al6xn imagwiritsidwa ntchito makamaka pokana zolimba komanso zopondera ku chlorisi. Ndi chitsulo chosapanga dzimbiri.

Ma coil 625 amadziwika ndi kukana kwake kwabwino kwa oxidation, kutentha kwambiri komanso kutopa. ASTM B443 SANDO N06625 SIVELEILE imagwiritsidwa ntchito kwambiri mu anthospace, mankhwala kutengera ndi mafuta ndi mafakitale chifukwa champhamvu kwambiri.

Kenako kuyenera kukhala gawo la kachitidwe koyendetsa madzi (mafuta, gasi, nthunzi, macheza, ...) mtunda wautali kapena wautali.

Incrooy 800h Valnge Tili ndi mbiri yolimba mu malonda popanga mitundu yayikulu ya mitundu yosiyanasiyana ya makasitomala athu. Timakhala ngati infolisoy ma fronges omwe ndi odalirika komanso apamwamba kwambiri. Timagwiritsa ntchito ndalama zotsogola komanso makina apamwamba popanga assowm B564 SIMIL N08800 Stuliloy ma fronges 800.

Montel K500 Pipe Bend ndi elibow imapereka nkhawa zopsinjika m'malo ena

Chifukwa cha kuchuluka kwa molybdenum ndi nickel zomwe zili mu AloY, ST3254 Super Duple osapanga dzimbiri zomwe amapereka akuwonetsa kuti ogula amagwiritsa ntchito zitsulo zazitali za chloride.
Imbani 36 K93600
www.htpipe.es
Chubu chowala
JCPIP.com
Zitsulo zomangira
Carbon Steel Bars & ndodo
Zhengzhou Huitong Mapaipel Counc CO., LTD.
Zitsulo zachitsulo
Monl 400 chitoliro cha mafelemu a magalasi magalasi
FSTEOLLOY C2000 mapaipi a ASME SB626 FOTELOLELOY C2000 Worded Bis
Kupanga Asme B36.10 ASME B36.39

Nickel Anoy 400 ndi Monl 400, omwe amadziwikanso kuti ndi N04400 Nictal-Copy-Copy-Copy kukhala makamaka mwa atatu a Nickel ndi chachitatu. Nickel Anoy 400 amadziwika chifukwa chokana kusiyanasiyana, kuphatikiza alkalis (kapena asidi), madzi amchere, ma hydrofluoric acid. Kuyambira monoy 400 kapena Aloy 400 ndi chitsulo chozizira chogwira ntchito, chivomerezichi chimakhala cholimba, kuuma ndi mphamvu. Pogwira ntchito yozizira astm B164 SARD N04400 bar stock, alloy imayang'aniridwa ndi kupsinjika kwamakina, komwe kumapangitsa kusintha kwa micrestructuctuctution ya Alloy.

Mtundu wa 304l ndi mtundu wotsika wa kaboni wa 304, umagwiritsidwa ntchito muzinthu zolemera za kuthwa bwino. Zogulitsa zina, monga mabatani ndi machubu, zimapezeka kuti "zinthu ziwiri zotsimikizika" ku 254 ndi 304l miyezo. 304h ndi mitundu yayitali ya kaboni yomwe ingagwiritsidwenso ntchito pamatenthedwe okwera.