Duplex UNS S31803
Duplex UNS S31803 Technical Information
Txheej txheem cej luam
Duplex yog austenitic ferritic Hlau Chromium-Nickel alloy nrog Molybdenim ntxiv. Nws muaj kev ua haujlwm zoo rau pitting, lub zog tensile siab thiab siab dua rau kev ntxhov siab corrosion tawg ntawm nruab nrab kub rau cov pa austenitic stainless hlau.
Duplex yog ib yam khoom uas muaj kwv yees sib npaug ntawm austenite thiab ferrite. Cov no ua ke zoo heev corrosion kuj nrog lub zog siab. Cov khoom siv tshuab yog kwv yees li ob npaug ntawm cov lus austenitic hlau thiab tsis kam tiv thaiv kev ntxhov siab corrosion yog zoo dua rau hom 316 stainless hlau hauv cov tshuaj chloride. Cov khoom siv duplex muaj qhov hloov pauv / tawg ntawm kwv yees li -50 ° C. Kev siv qhov kub thiab txias feem ntau yog txwv rau qhov kub siab tshaj ntawm 300 ° C rau kev siv tsis kawg vim yog embrittlement.
Cov txiaj ntsig
Muaj ntau yam txiaj ntsig ntawm Duplex suav nrog:
Siab zog
Siab tiv taus pitting, crevice corrosion kuj
High tiv thaiv corrosion corrosion, qaug zog thiab yaig
Zoo heev tiv thaiv Chloride kev nyuaj siab corrosion cracking
Tsawg thermal expansion thiab thermal conductivity ntau dua li Austenitic steels
Siab zog nqus
Ua haujlwm zoo thiab weldability
Daim ntawv thov
Cov kav dej - ASTM A790
Cov txheej txheem ntawm kev tsim khoom tuaj yeem yog seamless lossis tsis siv neeg vuam, tsis muaj qhov sib ntxiv ntawm cov khoom siv hlau. Cov yeeb nkab yuav kub lossis txias tiav, tiam sis yuav tsum tau muab tso rau hauv qhov chaw kho cua sov.
TSEEM CEEB - ASTM A815
Cov chav kawm no suav nrog chav kawm ntawm WP, ua los ntawm 4 pawg thiab ua tau raws li cov cai ntawm ANSI B16.9. Kev ntsuas siab yog qhov sib npaug ntawm cov yeeb nkab sib txuam.
Pawg:-
WP-S: Seamless Construction
WP-W : Welded Construction qhov chaw tsim kho welds yog radiographed
WP-WX : Welded Construction qhov twg tag nrho cov welds yog radiographed
WP-WU: Welded Siv qhov twg al welds raug kuaj Ultrasonically.
Flanges ASTM A182
ASTM specifications tswj cov ntaub ntawv pov thawj los ntawm cov flanges tuaj yeem ua tau. Forged lossis dov alloy steel yeeb nkab flanges, forged fittings thiab li qub rau kev siv kub.
Valves ASTM A890 Qib 5A
Txheem Specification rau Castings, lron-Chromium-Nickel-Molybdenum Corrosion-
Resistant, Duplex (Austenitic / Ferritic) rau General Application'
Cov ntsiab lus technical
CHEMICAL COMPOSITION (Txhua tus nqi yog qhov siab tshaj plaws tshwj tsis yog hais tias lwm yam)
| %C | % Cr | % Hauv | %Mo | %Mn | %S | %P | % Thiab | %N |
| 0.03 ib | 21.0-23.0 Nws | 4.5-6.5 | 2.5-3.5 | 2.00 Nws | 0.02 ib | 0.03 ib | 1.00 Nws | 0.08-0.2 hli |
MECHANICAL PROPERTIES
| Yield zog | Tensile zog | Elongation (tsawg kawg) | Kev txo qis ntawm cheeb tsam (tsawg kawg) | Hardness (siab tshaj) * |
| Ksi/Mpa | Ksi/Mpa | BHN | ||
| 65/450 ib | 60/620 ib | 20 | 290 |
*(NACE MR-01-75 hloov kho tshiab kawg tuaj yeem txwv hardness hauv qee daim ntawv thov)
PREn (PITTING RESISTANCE EQUIVALENT) - (%Cr) + (3.3 x %Mo) + (16 x %N)
Kev kho cua sov: SOLUTION ANNEALED ntawm 1020 DEG C - 1100 DEG C Dej QUENCH
TXOJ CAI TSHIAB +
| Teb Chaws Asmeskas | BS EN | SWEDEN SS | Lub teb chaws Yelemees DIN | FRANCE AFNOR | SANDVIK |
| 31803 ua | 1.4462 ib | 2377 ib | X2 CrNiMoN 22.5.3 | Z2 ZIB 22.05.03 | TIAB SA 2205 |
Post lub sij hawm: Aug-11-2022