625 Incoloy 825 inowira bofu dzinotsausa incanger 4 mukati

A789 unt s31803 uye unt S.2205205 ​​makumi maviri emakiredhi eDuplex Spainless Simbi iyo inoshandiswa zvakanyanya mune dzakasiyana siyana maindasitiri. Idzi duplex s3118803 mapepa asina masevedza anozivikanwa nekukora kwavo kwakanyanya kupesana, simba rakanyanya, uye rakanaka kwazvo. A789 ndeyekutaura iyo inovhara masapu uye yakavezwa mabhebhu yakagadzirwa kubva kuDuplex Spainless Simbi.

Alloy 800 Weld mitsipa inovhenekera isu tine mukurumbira wakasimba mune indasitiri yekugadzira yakakwira-mhando mafirita emhando dzakasiyana dzaigona kukodzera zvinodiwa nevatengi vedu. Isu tinogadzira incoloy 800 flanges iyo yakavimbika uye yakakwira mumhando. Isu tinoshandisa mari dzekutanga uye temberi yemachina ekugadzira ASTM B564 uns n08800 incoloy 800 flanges.

Yakagadziriswa-Kuwedzera Girazi-Yakacheneswa Iron-Nickel-Cobalt Alloys, gadzira mutsara wekuwedzera anowedzera kufanana neiyo yegirazi rakaoma mukati meimwe tembiricha yekupisa

ASTM B564 UNS N08800 Incoloy 800 is Nickel-Simbi-Chromium Alloy Inopa Simba rakakwirira uye kupokana kwakanyanya kune oxidation uye carburization pakupisa kwakanyanya.

Alloy 800 is a Nickel-simbi-Chromium Alloy ine simba rakanyanya uye rakanyanya kupokana ne oxidation uye corrosion pakupisa kwakanyanya. ASTM b407 uns n08800 incoloy 800 W. nr. 1.4876 Yakatemwa Pombi inoshandiswa zvakanyanya zvekuvakwa kwemidziyo inoda kuramba kupokana, kupisa kupesana, simba, uye kugadzikana kwebasa kusvika 1500 ° F (816 ° C).

Yakakwira Chromium, Molybdenum uye nitrogen yezvinyorwa zvinopa mukudzikisira kwakaenzana nhamba (40, kupa zvakakwirira kudzikisira kugona kuAustenitic uye duplex stainly media, uye tembiriro rakadzora kupfuura 50¡¡¡.

Kuumbwa kweA335 P91 zvinyorwa zvine Carbon, Manganese, Firis, Silforus, Chromic, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, Nitrogen, NIMINIUM, NIOBINIM Kune marudzi maviri emapepa asina masevha uye mapaipi akamira. Seamless pombi inokweverwa kubva kune imwe chete yakasviba yezvinhu billet, nepo astm a335 gr p91 welded pombi inosungirirwa kubva pamitsetse kana pepa. Welding inogona kuve yeheri kana longitudinal kubva kune imwe mugumo kusvika kune imwe yekugadzira iyo tube. SIMBI RAKANAKA Simba renyepi iri 415mpa uye hushoma husimba simba ndeye 585pa.

Inconel 6 00 ROPT Bar ndeye Nickel-yakavakirwa Alloy ine benign carburization uye yakanakisa corroson kuramba pane yakanyanya kupisa tembiricha. Inconel 600 matende ezvipfuyo zvinoshanda kupesana nekuomesa cl2 uye mamwe mamwe matsime akasiyana pakupisa uye kwakanyanya kupisa. Alloy 600 bar is a nickel-chromium acloy ine zvakanaka oxidation kupokana uye kuramba kuChroride yekudzvinyirira yekushambadzira, yakanyanya kuchena kwemvura corroson uye acid oxidation pakudziya kwakasimudzwa.

ASTM A240 Type 2205 Plate is a duplex stainless simbi simbi iyo inoshandiswa zvakanyanya mumaindasitiri emakemikari akadai sekuongorora kwemakemikari, kuongorora kwegasi, uye muinjiniya ekumaini. SA 240 GR 2205 pepa rinogadzirwa kubva kuGrade 2205 Simbi isina simbi, iyo iri musanganiswa wesimbi uye autenitic simbi.

316 uye 316L Steel mahwendefa ane zvigadziko zvakajairika uye zvinowanzoitika zvakapetwa kaviri, izvo zvinosimbisa kuti zvese zvine zvivakwa uye zvimiro zvinowirirana nemhando dzeSimbi. Muenzaniso 316H hwakabvisirwa izvi nekuti, kusiyana ne136 uye 316l, iyo 316h yakagadzirirwa kushanda tembiricha yepamusoro.

Inconel 625 Coil inoonekwa nekukanganisika kwaro kurwisa oxidation, yakakwira-tembiricha corroson uye kupera simba. ASTM B443 Uns n0662 incangen Plate inoshandiswa zvakanyanya muAerospace, maindasitiri emakemikari uye maaini uye kuoma uye kuomarara uye kusimba kunyange munzvimbo dzakanyanyisa.

Incoloy 800 Flanges Asme B16.5 Isu tiri mugadziri weASTM B564 Incoloy 800 Flanges, Incoloy 800 Flanges Asme B16.5.

Sch40 Monil 400 Pipe yakasarudzwa seWerkstoff Nhamba 2.4360 uye uns n04400. Alloy 400 pombi inozivikanwa seMameni Alloy 400 Pipe, Mhel 400 pombi & Nickel Alloy 400 pombi.

Chinhu chakanakisa chekukurumidza C22 Sceded Flanges ndeyekuti ine zvakanakisa kuramba midziyo yemitambo uye huwandu hwemakemikari emakemikari, kusanganisira oxidizers see acids, mvura yemvura, uye chloride solution.

Kurumidza B-3 is Nickel-Molybdenum Alloy Kupesana Nekudzima, Corrosion, uye Kushushikana-Kukanganisa Kurovera Plus, Kugadzikana Kwekuwedzera Kwakakwirira kune iyo yeAlloy B-2. Uye zvakare, iyi nickel simbi alloy ine kurwisa kukuru kune banga-mutsara uye kupisa‖caffakered zone kurwisa.

Invar 36® is the nickel-iron, yakaderera yekuwedzera maitiro ayo ine 36% Nickel, Invar

 aigona kushushikana zvakanyanya kunze kwechigaro chesimbi alloys anovachaita kupaza pasi pekunetseka. Asi, zvirimo zveMolybdenum muAlloy zvinovandudza zvivakwa zveA276 Type 316 Stainless Steel Bar.

Iyo mhando yeiyo pombi diamita yeA335 inogona kuedzwa nenzira imwe neimwe inofanirwa kuve yakaganhurirwa nehuwandu hwekuita tsika. Izvo zvakasiyana mechancal kuongororwa zvinodiwa pombi, i.e. Transverse kana Longitudinal Tensile bvunzo, miedzo yekubata kumeso, kuomarara kana kuongororwa, kunogara.

Kurumidza Alloys Directory
ASTM B564 UNS N0888, inozivikanwa zvakare seInfoly 825, inzvimbo yakakwirira yeiyo nickel axloy inoshandiswa mukunyoreswa kwakanyanya uye yakanyanya tembiricha. Iyo ine dzakasiyana dhizaini munyika dzakasiyana: ASTM B424 GR. Unt n08882 (US), din 17750 Gr. 2.4858, JIS G4902 GR. NCF 825.

Iyo inoshandiswa zvakanyanya muBegshore mafuta uye gasi kuongorora \ / / kugadzirwa uye mune yekushambadzira kuchinjanisa muPetrochemical \ /Memical kugadziriswa.

Alloy Steel Pipe & Tube
Chinese (Rakarerutswa)
Super duplex 2507 inoshandiswa munzvimbo dzaive nenzvimbo dzakakwirira dzehuku kana yakadzima okisijeni, yakadai seyakadenga yemvura, mutserendende, uye kusuwa, uye kusuwa, matsime eGeothermal.
1 kusvika 6 metres, tsika yakatemwa kureba

ASTM A276 \ / ASME SA276, ASTM A479 \ / Asme Sa479 & Astm A164 \ / Asme SA164
316 Stainless Steel Bar Stock, SS 316H Yakatenderera Bar Manfacturer kuChina, ASTM A276 Stainless Steel 316 Round Bar, SS 316 316 Square Bar, 316 SS Bar
Aisi 316 yakashongedzwa isina tsvina simbi bara

Incoloy Alloy 800 ifari yeNickel, simbi ne chromium. Iyo Alloy inokwanisa kuramba ichisimba uye ichichengetedza chimiro chayo austenitic kunyange mushure menguva yakareba kufumurwa pakupisa kwakanyanya. Humwe hunhu hwehukama hwacho simba rakanaka, uye kurwisa kwakanyanya kune oxidizing, kuderedza nharaunda dzakawanda

Izvo zvinokwanisa kutsungirira huwandu hwakawanda hwekuita oxidizing uye zvisiri-oxidizing makemikari, uye zvinoratidzira kuramba kwakanyanya kudzikisira uye kurwiswa kwechikepe pamberi pehuku uye kumwe kudziya.
Monil 400 Washers Nickel-Copper Alloy Washers

Kurumidza c2000 machubhu anoshandiswa mune yakawedzera huwandu hweshanduru yekusanganisira petrochemical kugadziriswa, makemikari ekugadzirisa michina kugadzira, mafuta enyeredzi uye zvidyarwa zvemafuta.

Al6xn is SuperAdyaTic STOLLess STOL isina simba rekupokana ku chloride pomber, crevic corrosion uye kusagadzikana corrosion kupaza. Al6xn ndeye 6 moly Alloy iyo yakagadziriswa uye inoshandiswa munzvimbo dzinotyisa kwazvo. Iyo ine yakakwira nickel (24%), molybdenamu (6.3%), nitrogen uye zvirimo zvirimo zvinopa kupokana kushamisira, Al6xn inonyanya kushandiswa kune yayo yakavandudzwa pombi uye crevice corrosion kuramba mu chlorides. Iyo inzvimbo inoyevedza uye inotyisa isina simba.

Kurumidza kuC2000 kunowanikwa mune dzakasiyana-siyana saizi uye gobvu, rudzi urwu rwechromini-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum-molybdenum

Alloy 625 is a Nickel-Chromium Alloy inozivikanwa uye inoshandiswa kuora uye oxidation kuramba, uye simba rayo rakanyanya.

Kurumidzai b3 pombi uye tube ine yakadzika chromium yezvinyorwa uye haifanirwe kushandiswa mune oxidizing acids kana munyu

Iyo inoratidza kupokana kwakanaka kune vasina kwavakarerekera uye kuderedza nharaunda. Aya maitiro aya anogadzira iyo ine mhuru, yefirimu rinodzivirira risingabvumirwe, asi rinochengetedza oxidation kupokana nekunyanyisa kupisa.

Incoloy 800h Flange isu tine mukurumbira akasimba muindasitiri yekugadzira yakakwirira-mhando mafirita emhando dzakasiyana dzaigona kukodzera zvinodiwa nevatengi vedu. Isu tinogadzira incoloy 800 flanges iyo yakavimbika uye yakakwira mumhando. Isu tinoshandisa mari dzekutanga uye temberi yemachina ekugadzira ASTM B564 uns n08800 incoloy 800 flanges.
Stainless Simbi Bar 309s
www.tourpa.es
Welded Tube
musiport.com
Simbi Fasteners
Nickel Alloy Pippe & Tube
Zhengzhou Huitotong Pipeline Equipment CO., LTD.
Duplex Simbi Fasteners
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm

Sae 304 Simbi isina tsvina ndiyo yakajairika simbi isina tsvina. Simbi ine ese chrromium (pakati pegumi neshanu kusvika makumi maviri neshanu muzana) uye nickel (pakati pe8% uye 10.5%) [1] simbi simbi isiri-simbi. It is austenitic simbi isina simbi. Izvo hazvina kunyatsoita uye nenzira yekunyora pane carbon simbi. Iyo yemagineti, asi isinganyanyi kushomeka kupfuura simbi. Iyo ine yakakwira kurwisa kupesana kupfuura nguva dzose simbi uye inoshandiswa zvakanyanya nekuda kwekurererwa iyo iyo inoumbwa mumhando dzakasiyana siyana. [1]

Iko kusanganiswa kweChromium, Molybdenum uye nitrogen kunopa 2205 kuramba kwakanaka kuhukura pirling uye crevice corrosion. Kupokana uku kwakakosha zvakanyanya masevhisi akadai seMarine Midziyo, Bracks Mvura, Kushanda Systems, Yakavharwa Loop Systems uye zvimwe zvekugadzirisa zvekugadzirisa.
Nickel Alloys ndeimwe yezvakanyanya zvinobatsira kugadzira hunyanzvi hwepamusoro pombi uye machubhu kune maindasitiri ekushandisa. Zvivakwa zvavo zvekushandisa zvinovaita kuti vave nebasa rakakura rekushandisa. Nickel Alloys ndeyekunze Corrosion inodzivirira uye inogona kushandiswa munzvimbo dzakakwirira-tembiricha.
Nickel-Conver-based Alloy 400 Mazoni 2.4360 Cold Dy Dhizaina Immuney Immuney Hurlis-Corros Interness yekunetseka painenge ichisimbisa midhiya mune yakajairana nenhamba. Monil 400 is a copper uye nickel yakavakirwa alloy iyo inozivikanwa nhasi nekuda kwekuita kwayo kwakanyanya. Iyo Alloy ine yakanaka acid uye alkali kuramba. Mukuwedzera, ine simba rakanaka rakafanana, ductility, dhiziri rakanaka, uye rinogona kuomeswa nebasa rinotonhora. Pamusoro pezvo, inogona kushandiswa mune zvekushandisa nekupisa kubva kuIns kusvika ku533 degrees Celsius.

Tsvimbo dzesimbi dzakakurumbira dzekuramba kwavo kupesana uye inoshandiswa zvakanyanya mukuvakwa kwenheyo dzekuvaka, mabhiriji uye nharaunda dzemawere. 304 \ / 304l Stainless Steel Round, giredhi giredhi giredhi simbi simbi yakanaka kuti zvese zvinyoronyoro zvinoda simba uye zvakakwirira kurwisa.

Mune dzimwe nzvimbo dzakakura dzakashata, kusanganiswa kweNickel uye Chromeri kunopa kupokana nemakemikari ehollidizing mikmikari, nepo yakakwira Nickel uye Molybdenum inopa kuramba kune isiri-oxidiing nharaunda.
Nyora seamless pombi
www.tourpa.es
Welded Tube
musiport.com
Simbi Fasteners
Nickel Alloy Pippe & Tube
Duplex simbi mahwendefa & mashitsi & coils
Duplex Simbi Fasteners
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm
Inconel 718 2.668 inopisa yakakwenenzverwa ndiro uye inotonhora yakadzika ndiro
tubertias de acero inox duplex 254smo 1.4547

Simbi pombi pombi inokotama inogona kushanda pasi pekudzvinyirirwa nekuda kwesimbi yakanaka uye yakanyanya kutakura mutoro.

Nickel Alloy 400 uye Monil 400, inozivikanwawo seMunyuti N04400, iri DUCTICE ANICEL-BEPHER AllEY INYKEL NYKEL uye yechitatu-yechitatu yengozi. Nickel Alloy 400 inozivikanwa nekudzivirira kwayo kune akasiyana mamiriro ezvinhu akaora, kusanganisira Alkalis (kana acids), mvura yemunyu, hydrofluor acid, uye sulfuric acid. Sezvo Monil 400 kana Alloy 400 isimbi inotonhora yakashanda, uyu mutero ane kuomarara kwakanyanya, kuomarara nesimba. Nekutonhora

Duplex simbi zvakare magineti, chivakwa chinogona kushandiswa nyore nyore kuvasiyanisa kubva kune vakajairwa neAustenitic tsain.

Ukuru hwevakakanganwira izvi hunobva? NB to 250 NB uye urefu hweiakakosheswa ndeye 2mm kusvika 40mm.

304 Fittings ndiwo mwero "18 \ / / 8" simbi isina simbi; Ndihwo hwakanyanya kukosha uye hwakashandiswa kwazvo simbi isina kurongeka inowanikwa mune yakakura huwandu hwezvigadzirwa, mafomu uye kupedzisa kupfuura chero chimwe. Iyo ine yakanaka yekuumba uye inosimbisa maitiro.
Nyora seamless pombi
www.tourpa.es
Welded Tube
musiport.com
Simbi Fasteners
Nickel Alloy Pippe & Tube
Duplex simbi mahwendefa & mashitsi & coils
Duplex Simbi Fasteners
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm
Inconel 718 2.668 inopisa yakakwenenzverwa ndiro uye inotonhora yakadzika ndiro
Unt n08367 seamless tube al6xn welded tube

Iko kune zvimwe kabhoni mune 316 simbi isina simbi kupfuura 316l. Izvi zviri nyore kuyeuka nekuti lim inomira "yakaderera". Asi kunyangwe neyakajeka kabhoni carbon, 316l yakafanana ne136 munenge munzira dzose. Mari inodhura yakafanana kwazvo, uye zvese zviri zviviri zvinogara, zvinokanganisa, uye sarudzo yakanaka yemamiriro ezvinhu akanyanya.

Inconel 718 is a nickel-chromium-yakavakirwa-yakavakirwa mari inowanzo shandiswa mukunyorwa-tembiricha zvakakura senge erispace uye gasi turbines. Chimwe chezvinhu zvakakosha mukugadzirwa kweASTM B670 Inconel 718 Sheet ndiyo ndiro iri rolling maitiro. Kune marudzi maviri makuru emapurasiti 718 mahwendefa anowanikwa pamusika: kupisa kwakapetwa uye kutonhora zvakapetwa mahwendefa.

Izvi zvinopa zvakanyatsosimbiswa kuramba kuSulfutic acid. Iyo ine zvakare yakakwira zvemukati, kuti uwedzere kupokana ne oxidizing makemikari uye maitiro ehova dzakasvibiswa neFerric ion uye yakanyungudika oksijeni.
Nyora seamless pombi
www.tourpa.es
Welded Tube
musiport.com
Simbi Fasteners
Nickel Alloy Pippe & Tube
Duplex simbi mahwendefa & mashitsi & coils
Duplex Simbi Fasteners
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm
Inconel 718 2.668 inopisa yakakwenenzverwa ndiro uye inotonhora yakadzika ndiro
Incoloy 800h pombi ine yakakwira temp aunel

Per zvakanyatsonaka seASTM A105, vachishandisa nzira dzakadai sekuisa zvinhu zvakajairika, kudzora, kupaza, kana kudzikisira kunogona kuunza shanduko yekuchinjana mune iyo ASTM A105 kuderedza.

Inoratidzira 304 STOLLU TESEL yeakanyanya kurwisa, iyi grainter yakatenderwa neLD mutsipa inogona kubatanidzwa kune system kuburikidza neicho tirtferial weld pamutsipa. Iyo nzvimbo yakashongedzwa inogona kuongororwa nyore nyore nerodhiyo. Dend pombi uye flange yakazvitakura inoderedza turbulence uye kugura mukati mePombi. Flange yakanaka kwazvo yekushandisa mune yako yakaoma mashandisirwo uye yakakodzera kushandiswa nemhepo, mvura, mafuta, gasi rechisikigo, uye steam.

Iyo Corrosion inodzivirira nekukurumidza Alloys inoshandiswa zvakanyanya nemaindasitiri emakemikari ekugadzirisa kwemakemikari. Kudikanwa kwekuita kwakavimbika kunotungamira mukugamuchirwa kwavo uye kukura munzvimbo dzesimba, hutano uye nemafuta uye gasi uye firmace fashformation maindasitiri.

Nickel yakavakirwa 800 incoloy hexagonal pombi inozivikanwa kuti uve nekudzikisira kwakanaka kuora. Kunyanya kutaura, iyo incocoy 800 pombi inopa kudzikisira kwakaringana kurwisa carburization pamwe ne oxidation corrosion.

ASME B36.19M ndiyo yakatarwa yetsvina yetsvina, inotsanangura zviyero, kushivirira, uye zvinodiwa nezvikumbiro zvemubayiro miviri uye zvisina maaipi.

Unt n08367 zvinowanzoitika seyakajairika al6xn is a lowl kabhoni, yekunyora "

Titanium yeTitanium inenge 60% iyo yeStusless Simbi uye Nickel Alloys, uremu uhu hunoita kuti ive sarudzo yakakurumbira mukushandisa kwakadai sekusarongeka.
Stainless Simbi Bar 309s
www.tourpa.es
Welded Tube
musiport.com
Simbi Fasteners
Nickel Alloy Pippe & Tube
Zhengzhou Huitotong Pipeline Equipment CO., LTD.
Duplex Simbi Fasteners
Invha 36 Tube OD: 0.2-6mm, WT: 0.02-2mm

Nickel 200 inodonha iyo Nickel 200 malipi anokwenenzverwa, akaiswa pasi, uye iva nekupera kwakanaka. Zvakare, iyo ASTM B564 UNONS N02200 Flanges inopesana neCollan yekuita Corrosion mukurerekera uye exidiing nharaunda, kuita kuti vave vakakwana pakubata kwemidziyo yekubata.

Uns n08926 yakarongedzwa bhazi, uns n08926 yakarongedzwa sleeves, unshore indasitiri yemafuta ekugadzira, maindasitiri makomputa, magetsi endhuma uye nitrogen jenarators.

T mune yakajairika kesi, iyo simbi yesimbi yekupera inopera kune pombi, ichibvumira yemahara yemapundu pombi flange kuti pivot yakatenderedza shuwa. Iyo inobvisa iyo Bump Gap gadziriso dambudziko.

254 SUM (unt S31254) es UN ACERO INOGADZA AUSTENITICE COMUNES, DISENADO Y Nitrogeso para Honta Picaduras y L.

RFP wlanges (yakasimudzwa kumeso kweLack flange) ndeimwe yeanonyanya kushandiswa malipi muindasitiri yekupa. Ivo vari nyore kuziva neyavo refu tapered hub iyo inoenderana nemadziro madziro (mubereki) wepipi.

Simbi isingabati vechikepe 316 Yakatenderera Bar inosanganisira Nickel zvirimo kusvika 14%, chromium zvirimo kusvika 18%, uye molybdenum zvirimo kusvika ku3%. Barless yetsvina 316 inotenderera bar ine yakanakisa kurwisa kupesana negungwa regungwa. Simbi isina tsvina 316ti mbariro dzakarukwa dzine hurombo hwakanaka kupesana ne oxidation corrostion. Simbi isina tsvina 316ti flat gara haigoni kuomeswa nekushanda kwekushanda kwekushanda. S31600 Bar inogona kungoomeswa neyekutonhora maitiro ekushanda. Simbi isingazununguki 316ti mraba madiki ane simba rakanyanya simba uye rakanakisa midziyo. Simbi isingabati 316l Hexagonal Bars inonyanya kushandiswa kune chikafu chekugadzirisa michina. Simbi isina tsvina 3166L hex mabara anoshandiswawo kune gasi rekugadzirisa gasi. Simbi isina tsvina 316 inotenderera inowanzo shandiswa muBegshore mafuta maindasitiri uye maindasitiri emarine. Simbi isina tsvina 316ti yakapukutwa mabara inoshandiswa kune vanopisa chivanjisa uye condenser.

Kuongororwa kwezvinhu kwakaratidzirwa hakuna kupaza uye madiki porosity yakaonekwa kuburikidza uye pamwe nenhamba yezvinhu zviviri uye zvinotevera zvakaiswa muna625.

Nilo Alloy 36, WMR 1.3912, Invar 36® is a nickel-iron

Asme sa105n carbon Steel Class 6000 Fittings Wholesaler ASTM A105 NPT Union Hammer Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Type Fighm

Mapipi ari phosphhoric acid, acetic uye akafananidza acid anorwisa. Zvakare, iyo tembiricha yakasarudzika uye kutarisisa ndeye hydrochloric acid kuramba.

Mapuro 254 mapepa anogona kutsungirira kushushikana kwakakwirira uye alloy 254 sm