904L waa kaarboon hoose oo aan xasiloonayn austenitic bir aan lahayn.Ku darida naxaasta ee darajadan waxay si weyn u wanaajisay iska caabbinta asiidhyada yareeya, gaar ahaan sulfuric acid.Waxa kale oo ay aad ugu adkaysataa weerarka chloride-labadaba daxalka daxalka/daxalka iyo walbahaarka daxalka.
Darajadani waa mid aan magnet-ka ahayn dhammaan xaaladaha waxayna leedahay alxanka iyo qaabaynta heersare ah.Qaab dhismeedka austenitic sidoo kale wuxuu siinayaa fasalkan adkeysi aad u wanaagsan, xitaa ilaa heerkulku hooseeyo.
904L waxay ka kooban tahay waxyaabo aad u la taaban karo oo ah maaddooyinka qiimaha sarreeya ee nikkel iyo molybdenum.Qaar badan oo ka mid ah codsiyada ay fasalkani hore u si fiican u qabteen ayaa hadda lagu buuxin karaa qiimo jaban iyadoo la adeegsanayo birta duplex ee birta ah ee 2205 (S31803 ama S32205), markaa waxa loo isticmaalaa si ka yar sidii hore.
Guryaha Furaha
Guryahaan waxaa lagu sifeeyay badeecada fidsan (saxarad, xaashida iyo gariiradda) ASTM B625.Guryo la mid ah laakiin aan la mid ahayn ayaa loo cayimay alaabada kale sida tuubada, tuubada iyo baarka siyahooda gaarka ah.
Halabuurka
Shaxda 1.Isku-dubbaridu waxay u dhaxaysaa 904L oo ah birta aan-tusanayn.
| Darajo | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L | min. max | - 0.020 | - 2.00 | - 1.00 | - 0.045 | - 0.035 | 19.0 23.0 | 4.0 5.0 | 23.0 28.0 | 1.0 2.0 |
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Guryaha Makaanikada
Shaxda 2.Qalabka makaanikada ee 904L ee birta aan lahayn.
| Darajo | Xoogga Jilitaanka (MPa) min | Xoogga Wax-soosaarka 0.2% Caddeynta (MPa) min | Ballaarinta (% gudaha 50mm) min | Adag | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 904L | 490 | 220 | 35 | 70-90 caadiga ah | - |
| Kala duwanaanshaha qiimaha Hardness Rockwell waa mid caadi ah oo keliya;qiyamka kale waa xad cayiman. | |||||
Guryaha Jirka
Shaxda 3.Guryaha jireed ee caadiga ah ee 904L ee birta aan lahayn.
| Darajo | Cufnaanta | Qalabka Elastic | Dhexdhexaadiyaha Balaadhinta kulaylka (µm/m/°C) | Habdhaqanka kulaylka | Kuleylka gaarka ah 0-100 ° C | Iska caabin Elec ah | |||
| 0-100°C | 0-315°C | 0-538°C | 20°C | 500°C | |||||
| 904L | 8000 | 200 | 15 | - | - | 13 | - | 500 | 850 |
Isbarbardhigga Fasalka
Shaxda 4.Tilmaamaha darajada 904L ee birta aan lahayn.
| Darajo | UNS No | Ingiriiska hore | Euronorm | Iswidishka SS | Jabbaan JIS | ||
| BS | En | No | Magaca | ||||
| 904L | N08904 | 904S13 | - | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | - |
| Isbarbardhiggani waa qiyaas kaliya.Liiska waxaa loogu talagalay isbarbardhigga walxaha la midka ah ee shaqeynayamaahaJadwal ahaan heshiisyo u dhigma.Haddii wax u dhigma oo sax ah loo baahdo tilmaamo asal ah waa in lagala tashadaa. | |||||||
Darajooyinka Beddelka ah ee suurtogalka ah
Shaxda 5.Darajooyinka beddelka ah ee suurtogalka ah ilaa 904L birta aan la taaban karin.
| Darajo | Waa maxay sababta loo dooran karo halkii 904L |
| 316L | Beddelka qiimaha jaban, laakiin leh iska caabin daxalka oo aad u hooseeya. |
| 6Mo | Iska caabin sare oo u adkaysta godadka iyo iska caabinta daxalka ayaa loo baahan yahay. |
| 2205 | Iska caabin daxalka ah oo aad u la mid ah, oo leh 2205 oo leh awood farsamo oo sare, iyo qiimo hoose ilaa 904L.(2205 kuma habboona heerkul ka sarreeya 300°C.) |
| Super duplex | Iska caabin sare oo daxalka ayaa loo baahan yahay, oo ay weheliso xoog ka sarreeya 904L. |
Iska caabinta daxalka
Inkasta oo markii hore loo sameeyay iska caabbinta sulfuric acid, waxay sidoo kale leedahay iska caabin aad u sarreeya oo ku wajahan degaanno kala duwan.A PRE ee 35 waxay muujinaysaa in maaddadu ay iska caabin wanaagsan u leedahay biyaha badda diiran iyo bay'adaha kale ee koloriin sare.Maadada nikkel-ka sare waxay keentaa iska caabin aad uga wanaagsan dildilaaca daxalka stress marka loo eego buundooyinka austenitic caadiga ah.Copper wuxuu ku daraa caabbinta sulfuric iyo asiidhyada kale ee yareeya, gaar ahaan inta u dhaxaysa "fiirsashada dhexe" ee aadka u daran.
Deegaannada intooda badan 904L waxay leedahay waxqabadka daxalka dhexdhexaadka ah ee u dhexeeya heerka austenitic fasalka 316L iyo 6% molybdenum aad u sarreeya iyo buundooyinka "super austenitic" oo la mid ah.
Nitric acid 904L waxay leedahay iska caabin yar marka loo eego darajooyinka molybdenum-la'aanta sida 304L iyo 310L.
Si loo helo iska caabin dildilaaca daxalka ugu badan ee meelaha muhiimka ah birta waa in la daweeyaa ka dib shaqada qabow.
Iska caabinta kulaylka
Iska caabbinta wanaagsan ee oksaydheynta, laakiin sida darajooyinka kale ee aadka loo qoondeeyay waxay la ildaran yihiin xasillooni darro qaabdhismeedka ( roobabka wejiyada jajaban sida sigma) heerkul sare.904L waa in aan la isticmaalin in ka badan 400°C.
Daawaynta kulaylka
Daawaynta Xalka (Annealing) - Kulayl ilaa 1090-1175 ° C oo si degdeg ah u qabooji.Darajadan laguma adkayn karo daawaynta kulaylka.
alxanka
904L si guul leh ayaa loo alxan karaa dhammaan hababka caadiga ah.Taxadir ayaa loo baahan yahay maadaama darajadan ay si buuxda u adkeynayso austenitic, sidaas darteed waxay u nugushahay dildilaaca kulul, gaar ahaan alxanka adag.Kuleyl ka hor waa in aan la isticmaalin inta badanna daawaynta kulaylka ka dib looma baahna.AS 1554.6 waxay hore ugu qalantay ulaha 904L ee alxanka 904L.
Farsamaynta
904L waa nadiif sare, darajo baaruud hoose, oo sidaas oo kale si fiican uma shaqeyn doonto.Iyadoo taasi jirto ayaa darajada lagu farsamayn karaa iyadoo la isticmaalayo farsamooyin caadi ah.
Ku laabashada raadiye yar ayaa si sahal ah loo fuliyaa.Inta badan tan waxaa lagu sameeyaa qabow.Baabi'inta ku xigta guud ahaan looma baahna, in kasta oo ay tahay in la tixgeliyo haddii la doonayo in been-abuurka loo isticmaalo deegaan halkaas oo la filayo xaaladaha dildilaaca daxalka daran.
Codsiyada
Codsiyada caadiga ah waxaa ka mid ah:
• Warshada warshadaynta ee sulphuric, fosfooraska iyo asiidhyada acetic
• Qalabaynta saxarka iyo waraaqaha
• Qaybaha ku jira dhirta xoqida gaaska
• Qalabka qaboojinta biyaha badda
• Qaybaha sifaynta saliidda
• Fiilooyinka ku jira dabaylaha korantada