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Chithunzi Chowonetsedwa cha SS904L AISI 904L Chitsulo Chosapanga Dzira (UNS N08904)
  • SS904L AISI 904L Chitsulo Chosapanga Dzira (UNS N08904) 1

SS904L AISI 904L Chitsulo Chosapanga Dzira (UNS N08904)

Kufotokozera Kwachidule:

UNS NO8904, yomwe imadziwika kuti 904L, ndi chitsulo chosapanga dzimbiri chopangidwa ndi carbon yochepa chomwe chimagwiritsidwa ntchito kwambiri m'malo omwe mphamvu za AISI 316L ndi AISI 317L sizili zokwanira. 904L imapereka kukana kwabwino kwa chloride stress corrosion cracking, kukana maenje, komanso kukana dzimbiri kuposa zitsulo zosapanga dzimbiri zowonjezeredwa ndi molybdenum 316L ndi 317L.


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Chitsulo chosapanga dzimbiri cha AISI 904L (UNS N08904) ndi chitsulo chosapanga dzimbiri cha austenitic. Poyerekeza ndi 316L, SS904L ili ndi mpweya wochepa (C), chromium (Cr) yambiri, komanso pafupifupi kawiri kuchuluka kwa nickel (Ni) ndi molybdenum (Mo) ya316L, zomwe zimapangitsa kuti ikhale ndi kukana kwambiri kutentha kwambiri, kukana mabowo, komanso kukana kuchepetsa asidi (monga sulfuric acid). Nayitrogeni (N) imatha kuchepetsa kuchuluka kwa chromium carbide precipitation, motero imachepetsa kukhudzidwa kwa sensitization, komanso imathandizira kukana kubowola ndi kuphulika kwa mabowo komwe kumachitika chifukwa cha ma chloride. Makamaka kuwonjezera kwake mkuwa (Cu) kumapangitsa kuti ikhale yothandiza pa kuchuluka konse kwa sulfuric acid.

Alloy 904L imagwira ntchito bwino kuposa zitsulo zina zosapanga dzimbiri za austenitic chifukwa cha kuchuluka kwa nickel ndi molybdenum. Giredi iyi si ya maginito nthawi zonse ndipo imakhala ndi mawonekedwe abwino komanso kusinthasintha. Kapangidwe ka austenitic kamapatsanso kulimba kwa giredi iyi, ngakhale kutentha kwambiri. Kuchuluka kwa chromium kumalimbikitsa ndikusunga filimu yopanda kanthu yomwe imateteza zinthuzo m'malo ambiri owononga. Palibe chiopsezo cha dzimbiri la intercrystalline pakuzizira kapena kuwotcherera chifukwa cha kuchuluka kwa kaboni kochepa. Kutentha kwake kwakukulu kwa ntchito ndi 450°C. Giredi iyi ndi yothandiza kwambiri pakugwiritsa ntchito machubu owongolera ndi zida pomwe 316 ndi 317L sizoyenera.

Alloy 904L idapangidwa poyamba kuti izitha kupirira malo okhala ndi sulfuric acid yosungunuka. Imaperekanso kukana bwino ma acid ena osapangidwa monga phosphoric acid yotentha komanso ma acid ambiri achilengedwe.

Alloy 904L imapangidwa mosavuta pogwiritsa ntchito njira zodziwika bwino zopangira zinthu m'sitolo.

Chitsulo chosapanga dzimbiri cha 904L (SS904L) chimagwiritsidwa ntchito popanga mafuta, mankhwala, feteleza, nsanja zopititsira patsogolo za m'nyanja, matanki, mapaipi ndi machubu komanso zosinthira kutentha. Opanga mawotchi a Rolex ndi ena amagwiritsanso ntchito popanga mawotchi.

Zofunikira za Mankhwala

Aloyi 904L (UNS NO8904)

% ya kapangidwe

C
Mpweya		 Mn
Manganese		 P
Phosphorous		 S
Sulfure		 Si
Silikoni		 Ni
Fakitoli		 Cr
Chromium		 Mo
Molybdenum		 N
Nayitrogeni		 Cu
Mkuwa
0.020 pasadakhale 2.00 payokha 0.040 pasadakhale 0.030 pasadakhale 1.00 payokha 23.0-28.0 19.0-23.0 4.0-5.0 0.10 payokha 1.00-2.00
Katundu wa Makina
Mphamvu Yopereka Mphindi 31 za Ksi
Kulimba kwamakokedwe Mphindi 71 za Ksi
Kutalika (2" mphindi) 35%
Kuuma (Rockwell B Scale) 90 HRB max
Kupanikizika kovomerezeka (gawo: BAR)
Kukhuthala kwa Khoma (mm)
    0.89 1.24 1.65 2.11 2.77 3.96 4.78
OD(mm) 6.35 393 572 783 1012      
9.53 253 362 499 657 883    
12.7 186 265 362 476 646    
19.05   172 233 304 410    
25.4   128 172 223 299 443 549
31.8     136 176 235 345 425
38.1     113 146 194 283 348
50.8     84 108 143 208 255

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  • Yapitayi:
  • Ena:
    • Ayi. Kukula (mm)
    OD Thank
    Chubu cha BA Kukhwima kwa pamwamba pa nthaka Ra0.35
    1/4″ 6.35 0.89
    6.35 1.00
    3/8″ 9.53 0.89
    9.53 1.00
    1/2” 12.70 0.89
    12.70 1.00
    12.70 1.24
    3/4” 19.05 1.65
    1 25.40 1.65
    Chubu cha BA Kukhwima kwa pamwamba pa nthaka Ra0.6
    1/8″ 3.175 0.71
    1/4″ 6.35 0.89
    3/8″ 9.53 0.89
    9.53 1.00
    9.53 1.24
    9.53 1.65
    9.53 2.11
    9.53 3.18
    1/2″ 12.70 0.89
    12.70 1.00
    12.70 1.24
    12.70 1.65
    12.70 2.11
    5/8″ 15.88 1.24
    15.88 1.65
    3/4″ 19.05 1.24
    19.05 1.65
    19.05 2.11
    1″ 25.40 1.24
    25.40 1.65
    25.40 2.11
    1-1/4″ 31.75 1.65
    1-1/2″ 38.10 1.65
    2″ 50.80 1.65
    10A 17.30 1.20
    15A 21.70 1.65
    20A 27.20 1.65
    25A 34.00 1.65
    32A 42.70 1.65
    40A 48.60 1.65
    50A 60.50 1.65
      8.00 1.00
      8.00 1.50
      10.00 1.00
      10.00 1.50
      10.00 2.00
      12.00 1.00
      12.00 1.50
      12.00 2.00
      14.00 1.00
      14.00 1.50
      14.00 2.00
      15.00 1.00
      15.00 1.50
      15.00 2.00
      16.00 1.00
      16.00 1.50
      16.00 2.00
      18.00 1.00
      18.00 1.50
      18.00 2.00
      19.00 1.50
      19.00 2.00
      20.00 1.50
      20.00 2.00
      22.00 1.50
      22.00 2.00
      25.00 2.00
      28.00 1.50
    BA Tube, Palibe pempho lokhudza kuuma kwa mkati mwa pamwamba
    1/4″ 6.35 0.89
    6.35 1.24
    6.35 1.65
    3/8″ 9.53 0.89
    9.53 1.24
    9.53 1.65
    9.53 2.11
    1/2″ 12.70 0.89
    12.70 1.24
    12.70 1.65
    12.70 2.11
      6.00 1.00
      8.00 1.00
      10.00 1.00
      12.00 1.00
      12.00 1.50
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