Alloy	%	Ni	Cr	Mo	Cu	N	C	Mn	Si	P	S
254SMO	Min.	17.5	19.5	6	0.5	0.18
Max.	18.5	20.5	6.5	1	0.22	0.02	1	0.8	0.03	0.01

254SMO Zvenyama zvivakwa:

Density	8.0 g/cm3
Melting point	1320-1390 ℃

254SMO yakaderera mechini zvivakwa mukamuri tembiricha:

Status	Kusimba simba Rm N Rm N/mm2	Goho simba RP0.2N/mm2	Elongation A5 %
254 SMO	650	300	35

 

Hunhu:
Iyo yakanyanya kukwirisa ye molybdenum, chromium uye nitrogen yakagadzirwa 254SMO ine yakanaka kwazvo kuramba kugomba uye kukoromoka kuita ngura. Mhangura yakavandudza corrosion resistance mune imwe acid. Pamusoro pezvo, nekuda kwehuwandu hwayo hwe nickel, chromium uye molybdenum, kuitira kuti 254SMO ive neyakanaka kushushikana simba ngura yekupwanya kuita.
1.Kuwanda kwekushandiswa kwakasiyana-siyana kwechiitiko kwakaratidza kuti kunyange in yakakwirira tembiricha, 254SMO mumvura yegungwa zvakare inopikisa zvakanyanya kune gap rekuita ngura, mhando shoma dzesimbi isina tsvina ine kuita uku.
2.254SMO senge bepa rebleach rinodiwa pakugadzirwa kweacidic solution uye mhinduro halide oxidative corrosion resistance uye corrosion resistance inogona kufananidzwa neyakagwinya zvakanyanya mu base alloy yenickel uye titanium alloys.
3.254SMO nekuda kwehuwandu hwenitrogen, saka simba rayo remuchina kupfuura mamwe marudzi eaustenitic simbi isina tsvina yakakwirira. Uye zvakare, 254SMO zvakare yakanyanya scalable uye inokanganisa simba uye yakanaka weldability.
4.254SMO ine high molybdenum content inogona kuita kuti ive yakakwirira ye oxidation mu annealing , iyo mushure mekuchenesa asidi nehupamhi hwepamusoro pane yakajairwa simbi isina tsvina inowanzoitika kupfuura iyo yakaoma. Nekudaro, hazvina kukanganisa zvakanyanya kusimba kwekuora kwesimbi iyi.

 

Metallological chimiro
254SMO inotarisana-yakatarisana ne cubic lattice chimiro. Kuti uwane austenitic chimiro, 254SMO general annealing mu 1150-1200℃.Mune dzimwe nguva, zvinhu zvingave nemararamiro esimbi yepakati chikamu (χ phase uye α-phase). Nekudaro, simba ravo rekuita uye corrosion kuramba haina kukanganisa zvakanyanya mumamiriro akajairwa. Kana yaiswa muchikamu che600-1000 ℃, vanogona kupinda mukunaya kwemuganho wezviyo.

 

Corrosion resistance
254SMO ine yakaderera kabhoni yemukati, zvinoreva kuti njodzi nekupisa kunokonzerwa nekunaya kwecarbide idiki kwazvo. Kunyange mu 600-1000 ℃ mushure meawa imwe sensitization vachiri kukwanisa kuna Strauss kuburikidza intergranular ngura bvunzo (Strauss Test ASTMA262 murayiro E). Mune yataurwa pamusoro tembiricha siyana intermetallic chikamu pamwe zvichibvira simbi mune zviyo muganhu kunaya. Aya madonhwe haaiti kuti zviitike intergranular corrosion mune zvinoparadza media application, zvino, welding inogona kuitwa pasina intergranular corrosion.Asi mukupisa kweiyo concentrated nitric acid, sediments iyi inogona kukonzerwa neiyo intergranular corrosion munzvimbo yakakanganiswa nekupisa. Kana simbi yakajairwa isina tsvina mumushonga une chloride, bromide kana iodide, inotaridza gomba, kukoromoka kwemukororo kana kusagadzikana ngura yekupwanya fomu nekuora kwenzvimbo. Nekudaro, mune dzimwe nguva, kuvepo kwehalide kuchamhanyisa yunifomu ngura. Kunyanya mune isiri-oxidizing acid. Mu pure sulfuric acid, 254SMO ine ngura yakakura kudarika 316(common Stainless steel), asi ine simbi yakanyunguduka yakadzikira kana ichienzaniswa ne904L (NO8904) simbi isina tsvina muhuwandu hwakanyanya. Mu sulfuric acid ine chloride ions , 254SMO ine hukuru hukuru hwekudzivisa kuora simba.Iyo 316 haigoni kushandiswa simbi isina tsvina muhydrochloric acid sezvo inogona kuitika munharaunda yekororo uye yunifomu, asi 254SMO inogona kushandiswa mu diluted hydrochloric acid mukupisa kwakawanda. ,uder the border region usade kunetseka nezve corrosion yakaitika. Zvisinei, tinofanira kuedza kudzivisa mukaha unotsemuka. Mu fluoride silicate (H2SiF4) uye hydrofluoric acid (HF), kusadzivirirwa kwekuora kwesimbi yakajairwa isina simbi kunogumira, uye 254SMO inogona kushandiswa mukupisa kwakanyanya uye kusungirira.

 

Nzvimbo yakashandiswa:
254SMO chinhu chakawanda-chinangwa chinogona kushandiswa mune akawanda maindasitiri maapplication:
1. Petroleum, petrochemical midziyo, petro-kemikari midziyo, senge mabhero.
2. Pulp uye mapepa bleaching midziyo, zvakadai pulp kubika, bleaching, washing filters anoshandiswa mubhodhoro uye humburumbira pressure rollers, zvichingodaro.
3. Power plant flue gasi desulphurization midziyo, kushandiswa kwezvikamu zvikuru: shongwe yekunyura, flue uye ndiro yekumisa, chikamu chemukati, spray system.
4. Mugungwa kana gungwa rekugadzirisa mvura, semagetsi emagetsi anoshandisa mvura yegungwa kutonhodza Condenser yakatetepa-yakakomberedzwa, desalination yemidziyo yekugadzira mvura yegungwa, inogona kuiswa kunyangwe mvura isingayerere mumudziyo.
5. Maindasitiri ekubvisa munyu, semunyu kana midziyo yekubvisa munyu.
6. Heat exchanger, kunyanya munzvimbo yekushanda ye chloride ion.